Answer:
B
Step-by-step explanation:
If you set x to hours and y to the amount of miles, you can multiply the hours to the numbers and equal out your miles. So, if 8 hours is multiplied to 50, it equals out the 400 miles.
A cylinder has a diameter of 5 centimeters and a height of 50 millimeters. Which of the following steps should be done first in order to find the surface area of the cylinder?
convert the diameter and the height to the same unit
determine the radius and multiply by 2
calculate the circumference of the circle
multiply the circumference of the circle by the height of the cylinder
Answer:
B determine the radius and multiply by 2pi
Step-by-step explanation:
Answer:
The first guy is rite. ♥☻
2x+3(5x−7)=47
Solve for x
Answer:
x=580
Step-by-step explanation:
The required value of x in the given equation 2x + 3(5x - 7) = 47 is 4.
What is the equation?The equation is defined as a mathematical statement that has a minimum of two terms containing variables or numbers that are equal.
We have to find the value of x in the equation 2x + 3(5x - 7)
Distribute the 3 across the parentheses on the left-hand side of the equation:
2x + 15x - 21 = 47
Combine like terms on the left-hand side of the equation:
17x - 21 = 47
Add 21 to both sides of the equation to isolate the variable term on the left-hand side:
17x = 68
Divide both sides of the equation by 17 to solve for x:
x = 4
Therefore, the value of x in the equation 2x + 3(5x - 7) = 47 is 4.
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The complete question would be as:
Find the value of x for the below equation. explain
2x + 3(5x − 7) = 47
Can someone help with this
Answer:
50
Step-by-step explanation:
Given that (3,3,-2) is a solution to the given system, which of the following statements are possibly true of the system? Check all the boxes that apply.
Answer: the system is consistent
The system is independent
Step-by-step explanation:
What is 5/15+3\5=? For the sum
Answer:
14/15
Step-by-step explanation:
make both bases the same number
5/15 + 9/5
add like normally
14/15
Answer:
14/15 is your answer
Step-by-step explanation:
Pls help me with this problom asap!!!!
Answer:
4 1/2. Root 18 simplifies to 4.242640687, which is less than 4.50
Answer:
4and 1/2
Step-by-step explanation:the square for of 18 is 4.24264 and 4 and a half is 4.5
Joanne is making punch. She uses 1/2 gallon of orange juice, 3 quarts of
lemonade, and 11/4 gallons of apple cider. How many quarts of punch will she
have all together? **Remember 4 quarts=1 gallon.
Your answer
Answer:
1/2 gallon=2 quarts plus 3 quarts so 5 quarts then 11/4 would be 11 quarts so 11+2+3=16 quarts
Step-by-step explanation:
If the 11/4 part is confusing you on how many quarts it actually is it simply means that for every 4 quarts you get a gallon and you have 11 quarts so you can also look at it as 2 3/4 gallons if that somehow clarifies it.
Unless otherwise specified, the domain of a function f is assumed to be the set of all real numbers x for which f(x) is a real number.
N(t)=⎧⎩⎨⎪⎪⎪⎪f(t)25t+150200+80t2+0.05tfor0≤t<6for6≤t<8fort≥8
The number of fish in a pond at time t years is modeled by the function N defined above, where f is a continuous function such that f(0)=80.
(a) Find limt→∞N(t). Explain the meaning of limt→∞N(t) in the context of the problem.
(b) Is the function N continuous at t=8 ? Justify your answer.
(c) The function N is continuous at t=6 . Is there a time t , for 0≤t≤6 , at which N(t)=250 ? Justify your answer.
Answer:
See Below
Step-by-step explanation:
The function is a piecewise function defined as:
[tex]N(t)=\left \{ {{25t+150} \ 0 \leq t \leq 6 \atop {\frac{200+80t}{2+0.05t} \ t \geq 8}} \right.[/tex]
a)
We need to find the limit of the function as t goes to infinity. This means what is the max value of fish in the pond given times goes to infinity (on an on).
We will take the 2nd part of the equation since t falls into that range, t is infinity, which is definitely greater than 8.
[tex]\lim_{t \to \infty} \frac{200+80t}{2+0.05t} \\\lim_{n \to \infty} \frac{80t}{0.05t}\\ \lim_{n \to \infty} \frac{80}{0.05} =1600[/tex]
This means the maximum number of fish at this pond is 1600, no matter how long it goes on.
b)
A function is continuous at a point if we have the limit and the functional value at that point same.
Functional value at t = 8 is (we use 2nd part of equation):
[tex]\frac{200+80t}{2+0.05t}\\\frac{200+80(8)}{2+0.05(8)}\\=350[/tex]
We do have a value and limit also goes to this as t approaches 8.
So, function is continuous at t = 8
c)
We want to find is there a "time" when the number of fishes in the pond is 250, during t from 0 to 6. We plug in 250 into N(t) and try to find t. Make sure to use the 1st part of the piece-wise function. Shown below:
[tex]N(t)=25t+150\\250=25t+150\\25t=250-150\\25t=100\\t=4[/tex]
The time is 4 years when the number of fishes in the pond is 250
YOU WILL GET BRAINLIST!!!!!!!!!1111
Rewrite the following fraction as a decimal. 4/5
The answer is 0.8. What I did was I put 4 divided by 5 in my calculator
Answer:
0.8
Step-by-step explanation:
First, we have to find out what 1/5 is, so we divide 1 by 5:
Divide:
1/5=.2
Multiply by 4:
.2 times 4= .8
I hope this helps u pls give a brainliest and a thx ;)
WORTH 100 POINTS!!
Based on the diagram, what is tanA ?
Right triangle A B C. Angle A C B measures 90 degrees. Side length a is across from angle A. Side length b is across from angle B. Side length c is across from angle C.
Answer:
a/b
Step-by-step explanation:
The value of tan A is a / b.
What is Trigonometry?In a right triangle ABC, where angle ACB measures 90 degrees, we can use the trigonometric function tangent (tan) to relate the sides of the triangle.
TanA is defined as the ratio of the length of the side opposite angle A (side a) to the length of the side adjacent to angle A (side b).
So, tanA = a / b.
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what is the length of a rectangle whose perimeter is 140 ft if its width-to-length is 2 : 5
Answer:
50 ft.
Step-by-step explanation:
It is given that the ratio of width-to-length is 2 : 5.
Let,
Width = 2x ft
Length = 5x ft
Perimeter of the rectangle is
[tex]Perimeter=2(lenght+width)[/tex]
[tex]Perimeter=2(5x+2x)[/tex]
[tex]Perimeter=2(7x)[/tex]
[tex]Perimeter=14x[/tex]
It is given that the perimeter of the rectangle is 140 ft.
[tex]14x=140[/tex]
Divide both sides by 14.
[tex]x=10[/tex]
The value of x is 10.
[tex]Length=5x=5\times 10=50[/tex]
Therefore, the length of the rectangle is 50 ft.
One gallon of water weighs 8.34 pounds. How much does 6 gallons of water weigh? Show your work, including labeling your answer with the appropriate units of measure
Answer:
50.04 pounds
Step-by-step explanation:
If 1 gallon weighs 8.34 pounds,
all you have to do is multiply 8.34 by 6
to get what 6 gallons would weigh.
To determine the weight of 6 gallons of water, multiply the weight of one gallon (8.34 pounds) by 6. Thus, 6 gallons of water weigh 50.04 pounds.
To find out how much 6 gallons of water weigh, you simply need to multiply the weight of one gallon by the number of gallons.
Since we know that one gallon of water weighs 8.34 pounds, the calculation is as follows:
6 gallons × 8.34 pounds/gallon = 50.04 pounds.
Therefore, 6 gallons of water weigh 50.04 pounds.
I have 5 math question
1: A zoo measured the height, in feet, of 9 giraffes?
18, 16, 22, 14, 17, 19, 15, 19, 22
A.16ft
B.17ft
C.18ft
D.19ft
----------------------------------------------------------------------------------------------------------------------------
2: This table shows the size, in acres, of four large water parks. What is the median of the sizes of the four water parks?
A.60 acres
B.63 acres
C.64 acres
D. 65 acres
----------------------------------------------------------------------------------------------------------------------------
3: What is the median of the ages in this stem-and-leaf plot?
A.43
B.45
C.46
D.47
----------------------------------------------------------------------------------------------------------------------------
4: What is the median of this data in this stem-and-leaf plot?
A.21
B.22
C.23
D.24
----------------------------------------------------------------------------------------------------------------------------
5: What is the median of the data set represented by the dot plot?
( )
The answer for question 1 is C. 18ft
for question 2 is B. 63ft
for question 3 is B. 45
and for question 4 is C. 23
Lastly for question 5 the answer is 14
Nancy rode her bike for 154
miles on Saturday. On Sunday,
she rode 0.7 fewer miles. How
many miles did she ride on
Sunday?
Answer:
153.3
Step-by-step explanation:
154-0.7
Answer:
153.3
Step-by-step explanation:
154.0-0.7=153.3
The area of a triangle is 40 square centimeters. The height is 10 centimeters. What is the length of the base of the triangle?
Answer:
20cm.
Step-by-step explanation:
so the answer is 8cm
Hope this will help u...
What is another name for Angle 2?
Lines EH and DF intersect at point G. Angle 2 is formed by line segments DG and GE and angle 1 is formed by line segments EG and GF.
a. Angle DGE
b. Angle GED
c. Angle EGF
d. Angle GEF
Answer:
a is the answer
Step-by-step explanation:
In the given scenario, angle 2 is formed by line segments DG and GE. Another name for angle 2 is Angle DGE (Option a).
What is the angle?Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.
Here,
As mentioned in the question, Lines EH and DF intersect at point G. Angle 2 is formed by line segments DG and GE, and angle 1 is formed by line segments EG and GF. So angle 2 is constituted by segments jointly as DGE.
Thus, Another name for angle 2 is Angle DGE (Option a).
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which is more 2 miles or 3,522 yards
Answer:
3,500 yards is more.
Step-by-step explanation:
convert the yards to miles using the formula M = Y/1760
which gives you 2.001 miles so it is slightly longer than 2 miles.
Answer :3,526 yards is 6 yards greater than 2 miles
Step-by-step explanation: 1,760 . 2= 3,520
If I like geometry, then I like math.
Choose the equivalent statement
Answer:
C
Step-by-step explanation:
If you don't like math you don't like geometry because geometry is math. Just like if you like geometry you like math because geometry is math
Answer:
C
Step-by-step explanation:
Since geometry is math, then if you don’t like math, you won’t like geometry.
The box plots show the average wind speeds, in miles per hour, for two different islands.
Average Wind Speeds on Island A
2 box plots. The number line goes from 1 to 11. For the average wind speeds of cities on Island A, the whiskers range from 1 to 9.5, and the box ranges from 3 to 7. A line divides the box at 4. For the average wind speeds of cities on Island B, the whiskers range from 1.5 to 11, and the box ranges from 4 to 9. A line divides the box at 6.
Average Wind Speeds on Island B
Which explains, on a given day, which island is more likely to have a wind speed close to its median?
Country A because the median is closer to one end of the box in the box plot.
Country B because the median is closer to the center of the box in the box plot.
Country A because it has a smaller interquartile range.
Country B because it has a larger interquartile range.
Answer:The correct answer would most likely be Country A. (The second one.)
Step-by-step explanation:
The reasoning for that would be because if you have a smaller interquartile range, it would most likely be closer to the median and won't have a chance of falling farther.
If you have questions please ask.
I hope this helps. :)
The island that is more probable to possess a wind speed nearer to its median would be as follows:
C). Country A because it has a smaller interquartile range.
"Median" is described as the middle number that functions to "isolate the higher half of a particular data from its lower half." In the given data, Country A is more probable to possess a wind speed nearer to the median. The reason behind this is that it carries a smaller/lower interquartile range(50% values in the middle ranging from the very lowest to the highest").Thus, option C is the correct answer.
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156 times 0.20 times 6
Answer: 187.2
Step-by-step explanation:
Answer:
187.2
Step-by-step explanation:
Part B
The hospital is 3.1 miles west of the fire station. What is the length of a straight line between the school and the hospital? Round to the nearest tenth. Enter your answer in the box.
miles
Answer:
Part A) The length of a straight line between the school and the Fire Station is [tex]4.6\ miles[/tex]
Part B) The length of a straight line between the school and the hospital is [tex]2.1\ miles[/tex]
Step-by-step explanation:
The complete question in the attached figure
Let
The positive x-coordinates ----> East
The positive y-coordinates ----> North
The negative x-coordinates ----> West
The negative y-coordinates ----> South
take the point A (0,0) as the Middle School (reference point)
Part A) we have
Town Hall is located 4.3 miles directly east of the Middle School
so
The coordinates of Town Hall are B(4.3,0)
The Fire Station is located 1.7 miles directly North of Town Hall
so
The coordinates of Fire Station are C(4.3,1.7)
What is the length of a straight line between the school and the Fire Station?
Remember that
the formula to calculate the distance between two points is equal to
[tex]d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}[/tex]
we have
A(0,0) and C(4.3,1.7)
substitute
[tex]d=\sqrt{(1.7-0)^{2}+(4.3-0)^{2}}[/tex]
[tex]d=\sqrt{(1.7)^{2}+(4.3)^{2}}[/tex]
[tex]d=4.6\ miles[/tex]
Part B) we have that
The hospital is 3.1 miles west of the fire station
so
The coordinates of the hospital are D(4.3-3.1,1.7)
D(1.2,1.7)
What is the length of a straight line between the school and the hospital?
Remember that
the formula to calculate the distance between two points is equal to
[tex]d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}[/tex]
we have
A(0,0) and D(1.2,1.7)
substitute
[tex]d=\sqrt{(1.7-0)^{2}+(1.2-0)^{2}}[/tex]
[tex]d=\sqrt{(1.7)^{2}+(1.2)^{2}}[/tex]
[tex]d=2.1\ miles[/tex]
what fraction multiplied by itself is equal to 4/25
Answer:
2/5 times 2/5 equals 4/25
Step-by-step explanation:
There are 60 students in a class. The number of girls is three times the number of boys. How many girls are in
the class?
B = number of boys
G = number of girls
G = 3*B since there are 3 times as many girls compared to boys
B+G = 60
B+3B = 60 ... replace G with 3B, solve for B
4B = 60
4B/4 = 60/4
B = 15, so there are 15 boys
G = 3*B
G = 3*15 ... plug in value of B
G = 45, and 45 girls
as a check
B+G = 15+45 = 60, so that works out
i need help with this
plz anwswer right away ill mark you brainiest if done.
Answer:
4 x 2 x 3
Step-by-step explanation:
[tex]l = 4\\\\w = 2\\h = 3\\[/tex]
Answer:
you can solve this by finding the volume of the block
Step-by-step explanation
V= lxwxh
= 3x4x2
= 24
therefore there are 24 blocks in this figure
Have a great day
An angle measures 156° less than the measure of its supplementary angle. What is the measure of each angle?
Answer:
12° and 168°
Step-by-step explanation:
If x is the angle, and y is the supplementary angle, then:
x + y = 180
x = y − 156
Solve the system of equations using substitution:
y − 156 + y = 180
2y = 336
y = 168
Plug back into either equation to find x:
x = 12
Final answer:
The measure of angle A is 12° and the measure of its supplementary angle B is 168°. This is determined by setting up the equation based on the property that the sum of supplementary angles is 180°.
Explanation:
The question asks to find the measures of two supplementary angles when one angle is 156° less than the other. Supplementary angles sum up to 180°. Let's designate angle A as the unknown angle and angle B as its supplementary angle. According to the given information, angle B is 156° more than angle A. Therefore, we can set up the equation A + B = 180°, where B = A + 156°.
Solving the equation A + (A + 156°) = 180° gives us 2A + 156° = 180°, and when we subtract 156° from both sides, we get 2A = 24°. Dividing both sides by 2 will give us A = 12°. To find angle B, we add 156° to angle A, resulting in B = 12° + 156°, which equals 168°.
Therefore, angle A is 12° and angle B is 168°. These are the measures of the two supplementary angles.
Lashonda bought some books for $6 each and received a discount of $8 off of her total purchase. She spent $58 after the discount. How many books did she buy?
Write an equation that could be used to answer the question above. Let b represent the number of books. Solve for b
Answer:
6b - 8 = 58
6b = 66
b = 11
Each book costs $11.
Lashonda bought 11 books.
To solve this problem, we can set up an equation based on the information given. Let [tex]\( b \)[/tex] represent the number of books Lashonda bought. Each book costs $6, so the total cost before the discount is [tex]\( 6b \)[/tex]. Lashonda received a discount of $8 off of her total purchase, and she spent $58 after the discount. Therefore, the equation representing the total cost before the discount minus the discount equals the amount she spent is:
[tex]\[ 6b - 8 = 58 \][/tex]
Now, we solve for [tex]\( b \)[/tex]:
[tex]\[ 6b = 58 + 8 \][/tex]
[tex]\[ 6b = 66 \][/tex]
[tex]\[ b = \frac{66}{6} \][/tex]
[tex]\[ b = 11 \][/tex]
So, Lashonda bought 11 books.
5. SURVEYS Out of
300 students surveyed,
68% said that pizza
was their favorite lunch.
How many students
surveyed said that pizza
was their favorite lunch?
Answer:
204 students said that pizza
was their favorite lunch
Step-by-step explanation:
300 · 0.68= 204
too find the percent of a number, you turn the percent into a decimal and multiply it by the original number.
PLEASE MARK BRAINLIEST!
Answer:
68% of 300 [problem we must solve]
68% ⇒ 0.68 [convert percent into decimal by dividing by 100]
0.68(300) [multiply decimal by the total amount, 300]
204 [your answer]
Your answer is 204 studentsI hope this helps!
- sincerelynini
Which dimensions can create only one unique triangle?
three angles measuring 25 degrees, 65 degrees, and 90 degrees
three angles measuring 50 degrees, 50 degrees, and 50 degrees
three sides measuring 5 in., 12 in., and 14 in.
three sides measuring 4 ft, 8 ft, and 14 ft
Three sides measuring 5 in., 12 in., and 14 in.
Explanation:First of all, you need to know some facts about every triangle:
FIRST FACT:
If two sides of a triangle are [tex]a \ and \ b[/tex], then the third side must be less than [tex]a+b[/tex]. Why? because if its length is exactly [tex]a+b[/tex], then you can't build up a triangle, but you'll have a line segment. In other words:
[tex]a<b+c \\ \\ b<a+c \\ \\ c<a+b[/tex]
SECOND FACT:
The internal angles of any triangle add up to 180°. So if ∠A, ∠B and ∠C are the internal angles of a triangle, then:
[tex]\angle A +\angle B+ \angle C=180^{\circ}[/tex]
__________________________
So let's analyze each case:
Case 1. Three angles measuring 25 degrees, 65 degrees, and 90 degrees :
[tex]\angle A=25^{\circ} \\ \\ \angle B=65^{\circ} \\ \\ \angle C=90^{\circ} \\ \\ \\ \angle A +\angle B+ \angle C=25^{\circ}+65^{\circ}+90^{\circ}=185^{\circ} \neq 180^{\circ}[/tex]
The sum is greater than 180 degrees, so these angles can't form a triangle
Case 2. Three angles measuring 50 degrees, 50 degrees, and 50 degrees [tex]\angle A=50^{\circ} \\ \\ \angle B=50^{\circ} \\ \\ \angle C=50^{\circ} \\ \\ \\ \angle A +\angle B+ \angle C=50^{\circ}+50^{\circ}+50^{\circ}=150^{\circ} \neq 180^{\circ}[/tex]The sum is less than 180 degrees, so these angles can't form a triangle
Case 3. Three sides measuring 5 in., 12 in., and 14 in. [tex]a=5 \\ \\ b=12 \\ \\ c=14 \\ \\ \\ 5<12+14\rightarrow 5<26 \\ \\ 12<5+14 \rightarrow 12<19 \\ \\ 14<5+12 \rightarrow 14<17[/tex]The inequalities are true, so these sides form a triangle.
Case 4: Three sides measuring 4 ft, 8 ft, and 14 ft
[tex]a=4 \\ \\ b=8 \\ \\ c=14 \\ \\ \\ 4<8+14\rightarrow 4<22 \\ \\ 8<4+14 \rightarrow 8<18 \\ \\ 14<4+8 \rightarrow 14<12 \ NOT \ TRUE![/tex]
Since the third inequality is not true, then we can't form a triangle with these sides.
A car wheel as a diameter of 20.8 inches. About how far does the car wheel travel in:
a. 1 rotation?
b. 5 rotations?
c. 30 rotations?
Answer:
distance travelled in one rotation is the circumference of the tyre.
so
a. 1 rotation=pi×20.8
=22×20.8/7
=65.37 approx
b.5 rotations is 65.37×5
=325.86 aprox
c. 30 rotations is 30×65.37
=1961.14 inches aprox
Answer: a ≈ 65in. b ≈ 325in. c ≈ 1950in.
Step-by-step explanation:
Diameter = 20.8
Circumference = d or 2r
= 3.14
Radius = d/2
This question requires us to find the circumference as the circumference is one full rotation around the circle (car wheel in this case)
Put it all together:
C = 3.14 x 20.8
= 65.31200
R = 10.4
The question says ABOUT hence we will round it to a whole number
C ≈ 65
D ≈ 10
As the circumference is one full rotation around the circle, the circumference itself is the answer for a.
If one full rotation is equal to 65, we would have 65 x 5 for 5 and so on
65 x 5 = 325
65 x 30 = 1950
Hope this helped, have a great day/night!
what’s the missing angle
Answer:
125 degrees.
Step-by-step explanation:
The 3 angles in a triangle add up to 180 degrees.
So the missing angle is 180 - (40 + 15)
= 125 degrees.