Answer:
For the first question, 180 degrees equals to a half of the sphere. For the second question, you need 24 central meridians for a complete sphere, which are exactly the hours in a day.
Step-by-step explanation:
A sphere is basically a 3D circle. As a circle has 360 degrees, 180 degrees would be half of a circle. Imagine you are on a satellite over the north pole or the south pole and you have a way to cut the earth by the middle. You will get two halves of sphere.
About the second question, you may need to have in mind that a day is the time spent for the earth to rotate all 360 degrees over its own axis. British fellow, on XIX century, decided they were the center of the world. As previously, back in the days, some other people decided a day had 24 hours, they decided to draw this lines and divide the earth in 24 pieces, so they could knew which time was on every point their extense kingdom had. As I said, a circle has 360 degrees, (360 degrees)/(24 hours) equals to 15 degrees.
Wayne is hanging a string of lights 58 feet long around the three sides of his patio, which is adjacent to his house. The length of his patio, the side along the house, is 6 feet longer than twice its width. Find the length and width of the patio.
Answer:
The length of the patio is 32 ft and the width is 13 ft
Step-by-step explanation:
see the attached figure to better understand the problem
Let
L ----> the length of his patio
W ---> the width of his patio
we know that
[tex]L+2W=58[/tex] ----> equation A
[tex]L=2W+6[/tex] ----> equation B
substitute equation B in equation A and solve for W
[tex]2W+6+2W=58[/tex]
[tex]4W+6=58[/tex]
[tex]4W=58-6[/tex]
[tex]4W=52[/tex]
[tex]W=13\ ft[/tex]
Find the value of L
[tex]L=2W+6[/tex] ----> [tex]L=2(13)+6=32\ ft[/tex]
therefore
The length of the patio is 32 ft and the width is 13 ft
The required patio length(L) = 32 and width(w) = 13.
Given that,
Wayne is hanging a string of lights 58 feet long,
And the side along the house, is 6 feet long.
We have to find,
The length and width of the patio.
According to the question,
Let, the length of his patio be L and width w,
Wayne is hanging a string of lights 58 feet long around the three sides of his patio, which is adjacent to his house.
L + 2W = 58
And The length of his patio, the side along the house, is 6 feet longer than twice its width.
L = 2W + 6
Solving the equation putting the of L from equation 2 in equation 1,
= 2W + 6 + 2W = 58
= 4W = 58 - 6
= 4W = 52
= W = [tex]\frac{52}{4}[/tex]
= W = 13
And L = 2(13) + 6 = 32
Patio length(L) = 32 And width(w) = 13.
Hence , The required patio length(L) = 32 And width(w) = 13.
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Can someone help me with number 10? Thank you.
Answer:
east 95 kmsouth 89 kmStep-by-step explanation:
SOH CAH TOA can remind you of the relationships between triangle measures. The distance east is the side of the right triangle that is opposite the angle, so is related to the hypotenuse (ship's travel distance) by the sine function.
sin(43°) = (travel distance)/(distance east)
So, ...
(distance east) = (travel distance)·sin(43°)
Likewise, the cosine function can be used to find the distance south.
Then we have ...
east = (130 km)sin(43°) ≈ 95 km
south = (130 km)cos(43°) ≈ 89 km
In a housing project there are 350 households in which English is spoken, 50 in which Spanish is spoken, and 100 in which the language is other than English or Spanish. If a psychologist approaches a house at random to conduct an interview, the chance that the language in that household will NOT be English?a- .002b- .14c- .3d- .43
Answer: C. 0.3
Step-by-step explanation:
Given : Number of English speaking households =350
Number of Spanish speaking households =50 (1)
Number of households in which the language is other than English or Spanish=100 (2)
Total households participates in this survey =350+50+100=500
No. of households not speak English =100+50=150 (Add (1) and (2))
If a psychologist approaches a house at random to conduct an interview, the chance that the language in that household will NOT be English will be :_
[tex]\dfrac{\text{No. of households not speak English}}{\text{Total households}}\\\\=\dfrac{150}{500}\\\\=\dfrac{3}{10}=0.3[/tex]
Hence, the correct option is option (c).
Anyone know the answer to this geometry problem?
Answer:
540°
Step-by-step explanation:
The sum of the interior angles of a polygon is:
(n-2)*180
where n = number of sides
Here you have :
(5 - 2)*180 = 540°
Two boats leave port at the same time. One goes west and the other south. The speed of the southbound boat is 5 mph more than the westbound boat. After 3 hours the boats are 27 miles apart. Find the speed of the southbound boat. Round to the nearest tenth of a mile per hour.
Westbound boats speed = X
Southbound boats speed = X + 5
In 3 hours they are 27 miles apart:
3X + 3(x+5) = 27
Simplify:
3x + 3x +15 = 27
Combine like terms:
6x + 15 = 27
Subtract 15 from both sides:
6x = 12
Divide both sides by 6:
x = 12/6
x = 2
Westbound was 2 miles per hour
Southbound was 2 +5 = 7 miles per hour
Check:
2 miles per hour x 3 hours = 6 miles
7 miles per hour x 3 hours = 21 miles
21 + 6 = 27 miles
In the past year, Ann watched 27 movies that she thought were very good. She watched 90 movies over the whole year. Of the movies she watched, what percentage did she think were very good?
Answer:
30%
Step-by-step explanation:
27 over 90 is equal to 0.3 in decimal form, turn that into percentage by multiplying by 100, and you get 30%
Selena is driving to visit her grandmother who lives 325 miles away from Selena home. she travels an average of 60 miles per hour. Determine the independent and dependent quantities in each scenario. Be sure to include the appropriate units of measure for each quantity
Answer:
Step-by-step explanation:
independent quantity=60 m/h
dependent =time taken=t
60 t=325
t=325/60=65/12=5 5/12 hours
Two clocks are turned on at the same time.One clock chimes every 15 minutes.The other clock chimes every 25 minutes.In how many minutes will they chime together
Answer:
The two clock will chime together in 75 minutes
Step-by-step explanation:
- Two clocks are turned on at the same time
- One clock chimes every 15 minutes
- The other clock chimes every 25 minutes
- We need to know in how many minutes they will chime together
- The two clock will chime together in the multiples of 15 and 25
- Lets find the first common multiple of 15 and 25
∵ 15 = 5 × 3
∴ The prime factors of 15 are 3 and 5
∵ 25 = 5 × 5
∴ The prime factor of 25 is 5
∴ The lowest common multiple of 15 and 25 = 5 × 3 × 5 = 75
∴ The two clocks will chime together every 75 minutes
The two clock will chime together in 75 minutes
You are given 1000 one dollar bills and 10 envelopes. Put the bills into the envelopes in such a way that someone can ask you for any amount of money from $1 to $1000 (examples - $532, $619, $88, etc.) and you can give it to them through a combination of the envelopes.
Answer:
We can do it with envelopes with amounts $1,$2,$4,$8,$16,$32,$64,$128,$256 and $489
Step-by-step explanation:
Observe that, in binary system, 1023=1111111111. That is, with 10 digits we can express up to number 1023.This give us the idea to put in each envelope an amount of money equal to the positional value of each digit in the representation of 1023. That is, we will put the bills in envelopes with amounts of money equal to $1,$2,$4,$8,$16,$32,$64,$128,$256 and $512.
However, a little modification must be done, since we do not have $1023, only $1,000. To solve this, the last envelope should have $489 instead of 512.
Observe that:
1+2+4+8+16+32+64+128+256+489=1000Since each one of the first 9 envelopes represents a position in a binary system, we can represent every natural number from zero up to 511. If we want to give an amount "x" which is greater than $511, we can use our $489 envelope. Then we would just need to combine the other 9 to obtain x-489 dollars. Since [tex]x-489\leq511[/tex], by 2) we know that this would be possible.help asap ( will give brainliest )
Answer:
B
Step-by-step explanation:
the open circle at -9 indicates that x is "greater than" -9, whereas the filled circle at -5 indicates that x is " less than or equal" to -5
Addison painted her room. She had 505050 square meters to paint, and she painted at a constant rate. After 222 hours of painting, she had 353535 square meters left. Let yyy represent the area (in square meters) left to paint after xxx hours. Complete the equation for the relationship between the area and number of hours.
Answer:
y = 50 - 7.5x
Step-by-step explanation:
Given,
The original area for painting = 50 m²,
Let c meter per hour be the constant rate of painting,
So, after 2 hours, the area painted = 2c m²,
Thus, the area left to paint = 50 - 2c
According to the question,
50 - 2c = 35
2c = 15
⇒ c = 7.5
i.e. the constant rate of painting is 7.5 meters per hour,
Hence, the area left after x hours = 50 - 7.5x
If y represents the area left to paint after x hours,
Then,
y = 50 - 7.5x
Which is the required equation.
Item 5: Suppose an American worker can make 20 pairs of shoes or grow 100 apples per day. On the other hand, a Canadian worker can produce 10 pairs of shoes or grow 20 apples per day. The opportunity cost for Canada is ___.
Answer:
The opportunity cost for Canada will be comparatively high in the production of shoes.
Step-by-step explanation:
An American worker can make 20 pairs of shoes or grow 100 apples per day.
A Canadian worker can produce 10 pairs of shoes or grow 20 apples per day.
In easy words, opportunity cost is defined as the value of ones next best alternative.
The opportunity cost for Canada will be comparatively high in the production of shoes.
Rewrite the expression 225 divided by 5/8 as 225 x 8/5. So, the quotient says a sloth may move 360 feet in 1 hour. Rewrite 90 minutes as 1 1/2 hour. Multiply by 1 1/2 to get feet in 90 minutes.
Answer:
540 feet
Step-by-step explanation:
225x(8/5)
360 feet in 1 hour
6 feet in 1 minute
540 feet in 90 minutes
The equivalent expressions of the given expressions is 540 feet in 90 minutes.
What are equivalent expressions?Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.
To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.
The expression of 225 divided by 5/8 as 225 x 8/5.
225 x (8/5)
So, the quotient says a sloth may move 360 feet in 1 hour.
360 feet in 1 hour
Then, 6 feet in 1 minute
90 minutes as 1 1/2 hour.
Multiply by 1 1/2 to get feet in 90 minutes.
540 feet in 90 minutes
The equivalent expressions of the given expressions is 540 feet in 90 minutes.
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A company had the following direct materials cost information:
Standard costs assigned: Direct materials standard cost (405,000 units @ $2/unit) $810,000
Actual costs: Direct Materials costs incurred (403,750 units @ $2.20/unit) $888,250
What was the cost variance?
a) $2,500 Favorable.
b) $78,250 Favorable
c) $78.250 Unfavorable
d) $80,750 Favorable.
e) $80,750 Unfavorable.
Answer:
Option c) $78,250 unfavorable
Step-by-step explanation:
The given information in the question :
Standard cost = $810,000
Actual cost = $888,250
Cost variance can be calculated as using the following formula :
Cost variance = standard cost - actual cost
= 810,000 - 888,250
= ($78,250) unfavorable
Favorable indicates how much under budget the project.
unfavorable indicates how much over budget the project.
Therefore, Option c) 78,250 unfavorable is the answer.
The function f(x) = (x − 4)(x − 2) is shown. On a coordinate plane, a parabola opens up. It goes through (2, 0), has a vertex at (3, negative 1), and goes through (4, 0). What is the range of the function? All real numbers less than or equal to 3 all real numbers less than or equal to −1 all real numbers greater than or equal to 3 all real numbers greater than or equal to −1
Answer: all real numbers greater than it equal to negative one.
Step-by-step explanation: if you graph this equation you see that the vertex is at (3,-1). We know that Range is all possible Y values.so, By looking at their graph we can see that the lowest point it touches is at -1. The rest of the graph goes off into positive and negative infinity.
Range= Y is greater than it equal to -1.
Answer:
All real numbers greater than or equal to −1
Step-by-step explanation:
Here, the given parabola,
[tex]f(x) = (x-4)(x-2)[/tex]
[tex]f(x) = x^2-4x-2x + 8[/tex]
[tex]f(x) = x^2 - 6x+8[/tex]
∵ Leading term = positive
So, the parabola is upward.
We know that an upward parabola is minimum at its vertex
Or it gives minimum output value at its vertex.
for instance, If (h, k) is the vertex of an upward parabola,
then its range = { x : x ≥ k, x ∈ R }
Note : Range = set of all possible output values
We have given,
Vertex = (3, -1)
Hence, Range = all real numbers greater than or equal to −1
LAST option is correct.
Matching: write in the correct letter.
line segment AB
Ray AB
The length of line segment AB
Line AB
answer options
a) AB
b) AB with a line above it.
c) AB with a line above it going only left.
d) AB with a line with both arrows on either side.
Line segment AB - b) AB with a line above it.
Ray AB - c) AB with a line above it going only left.
The length of line segment AB - a) AB
Line AB - d) AB with a line with both arrows on either side.
To match the given terms with the correct letter options, let's define each term and find its corresponding notation:
Line segment AB: A line segment is a part of a line that is bounded by two distinct end points.Ray AB: A ray starts at one point and extends infinitely in one direction. The length of line segment AB: This refers to the numerical length or distance between points A and B. Line AB: A line extends infinitely in both directions.These notations are crucial in geometry to clearly communicate different types of lines and measurements.
An independent-measures research study uses a total of 18 participants to compare two treatment conditions. If the results are used to construct a 90% confidence interval for the population mean difference, then the t values will be ±1.746.a) Trueb) False
Answer:
The answer is false
Step-by-step explanation:
In a sample above 30 obs like this the confidence interval is defined as
X+- t* (s/sqrt(n)) where X is the mean t the tvalue for a given confidence level, n the size of sample and s standar deviation.
To find de appropiate value of t we must see the T table where rows are degrees of freedom and columns significance level
The significance is obtained:
significance = 1 - confidence level = 1 - 0.9 = 0.10
Degrees of freedom (df) for the inteval are
df = n - 1 = 18 - 1 = 17
So we must look for the value of a t with 17 values and significance of 0.10 which in t table is 1.740 not 1.746 ( thats the t for 16 df)
The statement is false because the critical t value for a 90% confidence interval depends on the degrees of freedom, which, for an independent measures study with 18 participants split into two groups, would be 16 (18 participants - 2 groups),
The statement regarding an independent-measures research study comparing two treatment conditions with 18 participants constructing a 90% confidence interval and having t values of ±1.746 is assessed as False. The critical t value is determined by the degrees of freedom, which in an independent-measures t-test, is generally calculated as the total number of participants minus the number of groups. With 18 participants divided into two groups, the degrees of freedom would be 16 (18 - 2), assuming equal group sizes. The exact t value for a 90% confidence interval would need to be looked up in a t distribution table or calculated using statistical software, and it would likely differ from ±1.746 for 16 degrees of freedom.
To accurately determine the critical t value, one would consult a t distribution table or statistical software tailored to the specific degrees of freedom for the study. It's important to note that confidence intervals, t-tests, and their interpretations are crucial in research for estimating the range within which the true population parameter lies and for assessing the significance of the findings, respectively.
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Which shows the phrase "the difference between a number and 10" as a variable expression?
x−10
10x−10
x + 10
−10x
Answer: x-10
Since you're finding the difference of a number, x, and 10, you would do x-10.
Final answer:
The variable expression for "the difference between a number and 10" is represented by x − 10, which implies the subtraction of 10 from a variable x.
Explanation:
The phrase "the difference between a number and 10" as a variable expression is represented by x − 10. When we discuss 'the difference' in mathematical terms, we are referring to the result of subtracting one number from another. Here, whatever the unknown number (represented by the variable x) is, we are subtracting 10 from it.
Consider a tank used in certain hydrodynamic experiments. After one experiment the tank contains 800 L of a dye solution with a concentration of 1 g/L. To prepare for the next experiment, the tank is to be rinsed with fresh water flowing in at a rate of 8 L/min, the well-stirred solution flowing out at the same rate. Find the time that will elapse before the concentration of dye in the tank reaches 1% of its original value. (Round your answer to one decimal place.)
Answer:
t = 100 ln 100
Step-by-step explanation:
D(t) : The amount of dye (in g) at time t (in min)
D(0) = 800 L * 1 g/L = 800 g
the change in D is:
[tex]\frac{dD(t)}{dt} =D_{in}- D_{out} \\D_{in}: 0*8\ g/min \\D_{out}: \frac{D(t)}{800} *8\ g/min \\\frac{dD(t)}{dt} = -\frac{1}{100}D(t)[/tex]
[tex]\frac{dD(t)}{D(t)} =-\frac{1}{100}dt \\\int\limits^{D(t)}_{800} {\frac{1}{D(t)} } \, dD(t) =\int\limits^t_0 {t} \, dt \\ln(\frac{D(t)}{800})=-\frac{1}{100}t \\D(t) = 800e^{-\frac{1}{100}t} \\Solving\ D(t) = 0.01* D(0)=0.01*800 =8 \\8 = 800e^{-\frac{1}{100}t} \\ln (\frac{1}{100})=-\frac{1}{100}t \\100 ln 100 = t[/tex]
Help! Simplify (see photo) pls explain
If you don’t know pls don’t answer thanks
Answer:
[tex]-8 \sqrt{6}[/tex]
Step-by-step explanation:
[tex]4i\sqrt{-24} \\4i\sqrt{-1} *\sqrt{24} \\4i*i*\sqrt{4}*\sqrt{6}\\-4 * 2*\sqrt{6} \\-8 \sqrt{6}[/tex]
.
[tex]\sqrt{-1} =i \\i*i = -1[/tex]
El costo por kilo de queso chihuahua, es de 78. el total de queso comprado el dia anterior fue de 195. que fraccion del total de queso chihuahua queda
Answer: [tex]\frac{3}{8}\ kg[/tex]
Step-by-step explanation:
The table attached is part of the exercise (Without the table the question was incomplete).
We know that the cost of 1 kilogram of Chihuahua cheese is 78 and the Chihuhua cheese bought the day before cost 195.
The first step is to calculate the amount of cheese bought with 195:
[tex]\frac{195}{78}=\frac{5}{2}\ kg[/tex]
Now, we need to add the fractions provided in the table (This table shows the amount of cheese that was used in that day). Then:
[tex]\frac{1}{2}\ kg+\frac{7}{8}\ kg+\frac{3}{4}\ kg=\frac{17}{8}\ kg[/tex]
Finally, in order to find what fraction of Chihuahua cheese is left, we must subtract [tex]\frac{5}{2}\ kg[/tex] and [tex]\frac{17}{8}\ kg[/tex]:
[tex]\frac{5}{2}\ kg-\frac{17}{8}\ kg=\frac{3}{8}\ kg[/tex]
The population of ages at inauguration of all U.S. Presidents who had professions in the military is 62, 46, 68, 64, 57. Why does it not make sense to construct a histogram for this data set?
Answer: You only have 5 samples, always when you want to do statistics, you need a large sample size.
let's suppose you throw a dice 5 times, the results that it shows are 1,4,2,1,4. If you make statistics whit that numbers, you will think that the 1 and 4 have a bigger possibility than the other numbers, but that can't be, if you throw the dice enough times you will se that all numbers have the same possibility.
I am so confused and lost!! Please Help!!!
Answer:
x = 2.4
Step-by-step explanation:
To find the value when f(x) = x, you just have to replace f(x) for x
[tex]f(x) =-\frac{1}{4}x +3 \\x = - \frac{1}{4}x +3 \\x +\frac{1}{4}x=3 \\\frac{5}{4} x= 3 \\ x = 3*\frac{4}{5} \\x = 2.4[/tex]
What is the end behavior of the polynomial function?
Answer:
see below
Step-by-step explanation:
Ordinarily a graph like this will have arrowheads on the ends of the curve, indicating the curve continues on in the same direction. Here, we have to assume the existence of such arrowheads in order to choose a sensible answer.
As x goes to -∞, the curve continues to increase toward +∞. This is not an answer choice.
As x goes to +∞, the curve continues to decrease toward -∞. This matches the third answer choice.
Answer:
As [tex]x[/tex] tend to ∞, tehn [tex]y[/tex] tend to -∞.Step-by-step explanation:
In the graph you can observe the beahaviour of each variable.
Observe, as [tex]x[/tex] tend to ∞, then [tex]y[/tex] tend to -∞. This beahaviour is located in the IV quadrant.
So, in the options, the best answer is "as [tex]x[/tex] tend to ∞, tehn [tex]y[/tex] tend to -∞", because is true.
Other options are just false, for example, as [tex]x[/tex] tend to -∞, [tex]y[/tex] doesn't tendo to -∞.
As [tex]x[/tex] tend to -∞ [tex]y[/tex] doesn't tendo to 0.
Therefore, the right answer is the third choice.
Given that Ray B A bisects ∠DBC, which statement must be true? m∠ABD = m∠ABC AB ≅ BC B is the midpoint of DC. m∠DBC = 90°
Answer:
A.[tex]m\angle ABD=m\angle ABC[/tex]
Step-by-step explanation:
We are given that a ray BA bisects angle DBC.
We have to find true statement .
Angle bisector property:When a ray bisect any angle then the angles made by bisection of angle are equal.
When ray BA bisects angle DBC
Then, [tex]m\angle ABD=m\angle ABC[/tex]
By angle bisector property.
Therefore, option A is true.
Answer:A.[tex]m\angle ABD=m\angle ABC[/tex]
Answer:
A
Step-by-step explanation:
Because I said this was the answer. I know all.
A cash register at a store contains $66 bills. There are 6 more $5 bills than $10 bills. The number of $1 dollar bills is three times more the number of $10 dollar bills. How many bills of each kind are there?
Answer: There are 8 $5 bills, 2 $10 bills, and 6 $1 bills.
Step-by-step explanation: If you have 6 more $5 bills than the number of $10 bills, that means you have at least 6 to start off with. This also means you have at least 1 $10 bill. If you have 1 $10 bill, then you have 3 $1 bills as well. Adding those bills up, you get $43. From here, you know you need $3 more. Meaning you have to add another $10 bill. Since you added another $10 bill, you have to equal out the $5 bills.
So if you know you have 2 $10 bills and 6 $1 bills, you can determine that you need 8 $5 bills to complete the set.
2 $10 = $20
8 $5 = $40
6 $1 = $6
$20 + $40 + $6 = $66
If you eat one quarter of a pizza and your dog eats one eighth of it, what percent is left over?
Answer:
5/8 after subtraction :)
Step-by-step explanation:
Answer: The answer is: 62.5 % (left over).
______________________________________________
Step-by-step explanation:
______________________________________________
[tex]\frac{1}{4} + \frac{1}{8} = ?[/tex] ;
Change "(1/4)" to: "(?/8)" ;
What is "(?)" ? ;
→ (1/4) = (?/8) ;
notice the denominators;
(1/4) = (?/8) ; In the first fraction, how does the "denominator", "4" ; turn to "8" ? Specifically, since we dealing with "fractions", what number do we multiply "4" by, to get: "8" ??? ;
→ " 4 * ? = 8 " ?? ;
→ " 8 ÷ 4 = ? " ;
= 2 ;
______________________________________________
so " 1/4 = ?/8 " ;
Since we multiply the denominator, "4" ; by "2" , to get:
"8" (the denominator in the other fraction);
we multiply the numerator, "1" ; by "2" ; to get:
"2" (the denominator in the other fraction):
______________________________________________
→ " [tex]\frac{1}{4} = \frac{(1*2)}{(4*2)} = \frac{2}{8}[/tex] ;
______________________________________________
Now, the amount of the pizza that "you" ate is: "(2/8)" ;
The amount of the pizza eaten by "your dog" is: "(1/8)" ;
Let's add up the amount of pizza eaten:
[tex]\frac{2}{8} + \frac{1}{8} = \frac{(2+1)}{8} = \frac{3}{8}[/tex] .
The total amount of the pizza would be: " [tex]\frac{8}{8}[/tex] " .
Note: " [tex]\frac{8}{8}[/tex] = 8 ÷ 8 = 1 whole [pizza].
To find the amount left over, subtract the amount eaten; "(3/8)" ; from the whole pizza; "(8/8)" ; as follows:
______________________________________________
→ [tex]\frac{8}{8} - \frac{3}{8} = \frac{(8-3)}{8} = \frac{5}{8}[/tex] .
______________________________________________
Now, the question asks, what percent is left over? ;
So, we convert "(5/8)" into a percentage;
Change "(5/8)" to: "(?/100)" ;
→ Notice the denominators;
(5/8) = (?/100) ; In the first fraction, how does the "denominator", "8" ; turn to "100" ? Specifically, since we dealing with "fractions", what number do we multiply "8" by, to get: "100" ??? ;
→ " 8 * ? = 100 " ?? ;
→ " 100 ÷ 8 = ? " ;
= 12.5 ;
______________________________________________
so " 5/8 = ?/100 " ;
Since we multiply the denominator, "8" ; by "12.5" , to get:
"100" (the denominator in the other fraction);
we multiply the numerator, "5" ; by "12.5" ; to get:
"2" (the denominator in the other fraction):
______________________________________________
→ " [tex]\frac{5}{8} = \frac{(5*12.5)}{(100*12.5)} = \frac{62.5}{100}[/tex] ;
______________________________________________
→ [tex]\frac{62.5}{100} = 62.5 % .
______________________________________________
Hope this helpful to you!
Wishing you the best!
______________________________________________
I don’t get this question, please help.
Answer:
A = 7
B = 2
Step-by-step explanation:
The question is asking for the simplified form of √(-98). You are expected to know that √-1 = i, and you are expected to be able to factor the number 98.
[tex]\sqrt{-98}=\sqrt{(-1)(7^2)(2)}=7i\sqrt{2}[/tex]
Matching parts of the simplified expression to the form you are given, you see that ...
A = 7
B = 2
Two angles are complementary. One angle measures 20 degrees more than the other angle. Find the measure of the LARGER angle. Just type in the answer. Do not type in a variable or the degree symbol.
Two complementary angles equal 90 degrees.
If one is 20, the larger one would be 90 - 20 = 70 degrees.
A ball is thrown in the air from a ledge. It's height in feet represented by f(x)=16(x^2-6x-7), where x is the number of seconds since the ball has been thrown. The height of the ball is 0 feet when it hits the ground. How many seconds does it take the ball to reach the ground?
Answer:
Step-by-step explanation:
Since we know that the height is 0, we can figure out how long it took the ball to reach the ground by setting [tex]f(x) = 0[/tex] and solving for [tex]x[/tex]:
[tex]f(x) = 16(x^{2} - 6x - 7)[/tex]
[tex]0 = 16(x^{2} - 6x - 7)[/tex]
[tex]0 = x^{2} - 6x - 7[/tex]
[tex]0 = (x - 7)(x + 1)[/tex]
[tex]x = -1, 7[/tex]
Because time can only be positive, the answer is 7 seconds.
Answer:
7 seconds.
Step-by-step explanation:
height h = 16(x^2-6x-7) = 0
x^2 - 6x - 7 = 0
(x - 7)(x + 1) = 0
x = 7 seconds (we ignore the negative).