Answer:
[tex]x^2+y^2=81[/tex]
Step-by-step explanation:
The standard form of the equation of a circle of radius r, with centre (h, k) is given as:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
We are required to write an equation in standard form for the circle with radius 9 centered at the origin.
Centre(h,k)=(0,0), r=9Substituting these values into the Standard form of the equation of a circle given above:
[tex](x-0)^2+(y-0)^2=9^2\\x^2+y^2=81[/tex]
The standard form is: [tex]x^2+y^2=81[/tex]
The equation of the circle whose center is at (0,0) and the radius is 7 is [tex]\rm x^2+y^2=49[/tex] and the equation of the circle whose center is at (0,0) and the radius is 9 is [tex]\rm x^2+y^2=81[/tex].
Given :
The circle with a radius 9 is centered at the origin.
The following steps can be used in order to determine the equation in standard form for the circle:
Step 1 - The generalized equation of the circle is given below:
[tex]\rm (x-h)^2+(y-k)^2=r^2[/tex] --- (1)
where (h,k) represents the coordinates of the center of the circle and r is the radius of the circle.
Step 2 - According to the given data, the center of the circle is at (0,0) and the radius of the circle is 9.
Step 3 - Substitute the values of all the known terms in equation (1) in order to determine the equation of the circle.
[tex]\rm x^2+y^2=81[/tex]
Step 4 - Now, the equation of the circle whose center is at (0,0) and the radius is 7 is given by:
[tex]\rm x^2+y^2=49[/tex]
For more information, refer to the link given below:
https://brainly.com/question/10165274
Which of the following are in the correct order from least to greatest? StartFraction 3 pi Over 10 EndFraction, 60°, StartFraction pi Over 2 EndFraction, StartFraction 2 pi Over 3 EndFraction, 255° 255°, StartFraction 2 pi Over 3 EndFraction, StartFraction pi Over 2 EndFraction, 60°, StartFraction 3 pi Over 10 EndFraction StartFraction 3 pi Over 10 EndFraction, StartFraction pi Over 2 EndFraction,StartFraction 2 pi Over 3 EndFraction 60°, 255° 255°, 60°, StartFraction 2 pi Over 3 EndFraction, StartFraction pi Over 2 EndFraction, StartFraction 3 pi Over 10 EndFraction
Answer:
D) 69.1 ft
Step-by-step explanation:
Answer: a
Step-by-step explanation:
What is the value of the soccer ball?
1. baseball + basketball = 240
2. tennisball + soccerball = 500
3. soccerball - basketball + tennisball = 455
4. baseball + tennisball = 215
Subtract 1 from 4
5. tennisball - basketball = -25
Rearrange 3
6. soccerball + tennisball - basketball = 455
Substitute 5 into 6
7. soccerball - 25 = 455
Solve
soccerball = 480
The cost of an entry ticket to an amusement park is $5 for a child and $8 for an
adult. During a given 15 minute period, 120 people entered the park, and the total
revenue from ticket sales was $810. During that 15 minute period, how many adults
entered the amusement park?
Answer:
70 adults
Step-by-step explanation:
because there is 70 adults and 50 kids
What is the value of the expression StartAbsoluteValue negative 7 EndAbsoluteValue + StartAbsoluteValue negative 4 EndAbsoluteValue?
Answer:
11
Step-by-step explanation:
|-7|+|-4|
-|-7|-|-4|
Answer 11
Answer:
11
Step-by-step explanation:
can i pls have brainlist i really need it to level up plss
The model represents the factorization of 2x2+5x+3.
What are the factors of the polynomial?
'O
tx
+X
(2x+3)(x+1)
(2x-3)(x-1)
(3x+2)(x+1)
(3x-2)(x-1)
AX
Answer:
(2x+3)(x+1)
Step-by-step explanation:
Porque si lo factorizas da ese resultado.
The factors of the polynomial are (2x + 3) and (x+1)
Factorizing quadratic expressionsGiven the quadratic equation expressed as:
2x^2+5x+3
We are to find the factors of the given quadratic function as shown:
2x^2+5x+3
2x^2+2x +3x +3
2x(x+1)+ 3(x+ 1)
(2x + 3)(x + 1)
Hence the factors of the polynomial are (2x + 3) and (x+1)
Learn more on factors of the polynomial here:https://brainly.com/question/527031
Can you help me with this please
Step-by-step explanation:
This is a cube
Formula surface area of a cube = s2 × 6
Where s is one side
Square of 8 = 64
64 × 6 = 384
There are 2 brown marbles, 3 black marbles, and 4 gold marbles in a bag. What is the probability of drawing 2 brown marbles if the first is replaced after it is drawn?
Answer:
.049 (2sf)
Step-by-step explanation:
[tex] \frac{2}{9} \times \frac{2}{9} = 0.4938[/tex]
Answer & explanation:
The correct answer is 4/81. The probability of each marble drawn being brown is 2/9 because there are two brown marbles in a bag of nine total marbles. So, the probability that both marbles drawn will be brown is 2/9 times 2/9 or 4/81!
Robert recently discovered a forgotten student loan bill. The amount due after 10 years is
now $10,819.33. He found some old statements and determined that after 7 years the bill
was $8831.80 and after 5 years he owed $7714.03.
1. How much did Robert borrow initially?
2. Robert is planning to pay the loan in full next year. How much will he owe then?
3. What is the interest rate on Robert’s loan?
Answer:
1.Robert borrowed $ 5,500.00
2.The amount Robert would repay next year is $ 11,576.69
3.The interest rate on the loan is 7%
Step-by-step explanation:
The interest on the loan can be computed using compound annual growth
rate
CAGR=(EB/BB)^1/n-1
EB is ending balance of $8831.80 in year7
BB is the balance of year 5 $7714.03
n=7-5=2
CAGR=(8831.8/7714.03)^(1/2)-1
CAGR==1.070000427-1
CAGR=0.070000427
CAGR=7%
The amount borrowed can be computed using the PV formula
At year 0 year 5 amount of $7714.03 is the future value
rate of interest is 7%
number of years is 5
PV=$7714.03*(1+7%)^-5
PV=$ 5,500.00
The amount Robert would pay next year is :
FV=$10,819.338(1+7%)^1
FV=$ 11,576.69
i need help and fast !!! will give brainliest
Answer:
(x+3)(2x+7)
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
(2x2 + 13x) + 21
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 2x2+13x+21
The first term is, 2x2 its coefficient is 2 .
The middle term is, +13x its coefficient is 13 .
The last term, "the constant", is +21
Step-1 : Multiply the coefficient of the first term by the constant 2 • 21 = 42
Step-2 : Find two factors of 42 whose sum equals the coefficient of the middle term, which is 13 .
-42 + -1 = -43
-21 + -2 = -23
-14 + -3 = -17
-7 + -6 = -13
-6 + -7 = -13
-3 + -14 = -17
-2 + -21 = -23
-1 + -42 = -43
1 + 42 = 43
2 + 21 = 23
3 + 14 = 17
6 + 7 = 13 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 6 and 7
2x2 + 6x + 7x + 21
Step-4 : Add up the first 2 terms, pulling out like factors :
2x • (x+3)
Add up the last 2 terms, pulling out common factors :
7 • (x+3)
Step-5 : Add up the four terms of step 4 :
(2x+7) • (x+3)
Which is the desired factorization
Final result :
(x + 3) • (2x + 7)
- If you want this explained differently please let me know. Hope this helps!
A soup can, shaped like a cylinder, has a diameter of 3.5 inches and a height of 5 inches. Each serving of soup is 15 cubic inches. If a can of soup this size costs $1.99, what is the cost of each serving of soup? Round to the nearest cent.
Answer:
The answer to your question is Cost of a serving = $0.62
Step-by-step explanation:
Data
diameter = 3.5 in
height = 5 in
each serving = 15 in³
Cost of the can = $1.99
Process
1.- Calculate the volume of the can
Volume = πr²h
-Substitution
Volume = (3.14)(3.5/2)²(5)
-Simplification
Volume = (3.14)(3.062)(5)
-Result
Volume = 48.08 in³
2.- Use proportions and cross multiplication to find the cost of a serving.
48.08 in³ ---------------- $1.99
15 in³ ---------------- x
x = (15 x 1.99)/48.08
x = 29.85/48.08
x = $0.62
Select the correct answer.
In which direction must the graph of f(x) = 7* be shifted to produce the graph of g(x) = 7* + 7?
O A.
up
OB. right
0
C. down
0
D.
left
Reset
Next
Answer:
Maybe A hopefully its the correct answer
Find four solutions of the equation. Write the solutions as ordered pairs.
y = x+5
Answer:
when x=1, y=6. etc.
Step-by-step explanation:
x y
1 6
2 7
3 8
4 9
Use these similar triangles on the coordinate plane to determine the equation of a straight line with a slope of 5/3 that passes through the origin.
y = five-thirds x
y = three-fifths x
y = 3x + 5
y = 5x + 3
Answer:
y = five-thirds x
Step-by-step explanation:
y = mx + b y intercept = 0
y = 5/3 x slope = 5/3
Answer:
The answer is A
Step-by-step explanation:
its easy pls like
Dave determines the meal he ordered at the restaurant contains 22% of his daily sodium intake. If the meal contains 260 mg of sodium, how many mg of sodium are in Dave's daily diet? Round your answer to the nearest whole mg
Answer:
1182 mg to the nearest mg.
Step-by-step explanation:
22% is equivalent to 260 mg sodium, so
100% is equivalent to 260 * (100/22)
= 1181.82 mg.
what is percentage?
A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion therefore refers to a component per hundred. Per 100 is what the word percent means. The letter "%" stands for it.
Examples of percentages are:
10% is equal to 1/10 fraction
20% is equivalent to ⅕ fraction
25% is equivalent to ¼ fraction
50% is equivalent to ½ fraction
75% is equivalent to ¾ fraction
90% is equivalent to 9/10 fraction
Given,
Dave determines the meal he ordered at the restaurant contains 22% of his daily sodium intake
Meal contains 260 mg of sodium
22% is equivalent to 260 mg sodium, so
100% is equivalent to 260 x ([tex]\frac{100}{22}[/tex])
= 1181.82 mg.
22% is equivalent to 260 mg sodium, so
100% is equivalent to 260 * (100/22)
= 1181.82 mg.
Learn more about percentage here:
https://brainly.com/question/24304697
#SPJ2
I need help please?!!!
Answer: (3)/(4)(3x+8), x^(2)-4, 3^(2+)x, -5(x-3)
Step-by-step explanation: Those are the right answers, trust me, this took a while.
Have a good day, brainliest wouldn't be bad :)
In a lab, 180 cells are present at the beginning of an experiment. During the first 9 hours, the number of cells increased by 8% each hour. Write an exponential model giving the number of cells y present t hours after starting the experiment. Estimate the time when the number of cells is 360.
Answer:
The answer is 9 hours
Step-by-step explanation:
From the initial population of 180 cells, the number grows by 8% every hour for the first 9 hours.
This represents a increased population of 108% the previous population.
108% = 108/100 = 1.08
So the new population after n hours is
180 x 1.08^n
When population is 360
360 = 180 x 1.08^n
1.08^n = 2
Take log of both sides
n x Log1.08 = Log 2
n = Log 2/Log 1.08
n = 9
Find the solutions of the quadratic equation Choose 1 answer:
Answer:
B
Step-by-step explanation:
Solve the equation 2x2 + 13x + 15 = 0 by factoring. Show all steps.
Answer:
(2x + 3)(x + 5)
Step-by-step explanation:
2x² + 3x + 15 = 0
(2x + 3)(x + 5)
2x + 3 = 0
2x = -3
x = -3/2
x + 5 = 0
x = -5
f(x) = 4x2 + 7x - 18
Find f(-9)
Answer:
f(-9)= 243
Step-by-step explanation:
f(x) = 4x²+7x -18
f(-9) = 4(-9)²+7(-9)-18
= 4(81) -63-18
= 324- 81
= 243
Answer:279
Step-by-step explanation:
Bc
a campground owner had 150 meters of fencing to enclose a rectangualr field adjacent to a river and also bisect that field into two equal halves. No fencing required with river. what are the dimesions of the largest area that can be enclosed
Answer:
Dimension of the Rectangle : 2W - 150 by W
Step-by-step explanation:
Given
Land Size = 150 metres
This land size represents the perimeter of the land
Let P = Perimeter
So, P = 150 m
To bisect the field into two equal halves means to divide length or width of the field into two equal halves
Let L = Length of the field
Let W = Width of the field
Assuming the length of the field is to be bisected., then the campground owner is left with 0.5L (i,e half of the length)
Perimeter of a rectangle is calculated by: 2(Length + Width)
P = 2(L + W) by substitution, becomes
150 = 2(0.5L + W) ----open bracket
150 = L + 2W ---- Male L the subject the formula
L = 2W - 150
The dimension of the largest area that can be enclosed id given by (L,W)
By substitution; the expression becomes
Dimension of the Rectangle : 2W - 150 by W
Which value of x makes the equation true?
x + 7 = -9
Answer:
x = -16
Step-by-step explanation:
x + 7 = -9
x = -9 - 7
x = -16
Answer:
X=-16
Step-by-step explanation:
If you add -16 Then add a positive 7 you will end up with a -9
Have a great day
s the interquartile range of this data?
6
8
9
20
Box-and whisker plot titled Number of Coins in Collection with five-number summary from left to right 7, 16, 30, 36, 38.
We have been given the 5-number summary of a box plot that represents Coins in Collection. The five-number summary from left to right is 7, 16, 30, 36, 38.
We are asked to find the inter-quartile range of the given data.
We know that interquartile range is difference of upper quartile and lower quartile.
We know that the 5-point summary represents the lower data point, lower quartile, median, upper quartile and upper data point respectively.
We can see from our given 5 point-summary that lower quartile is 16 and upper quartile is 36.
[tex]\text{Interquartile range}=\text{Upper quartile}-\text{Lower quartile}[/tex]
[tex]\text{Interquartile range}=36-16[/tex]
[tex]\text{Interquartile range}=20[/tex]
Therefore, the interquartile range of the given data is 20 and last option is the correct choice.
Answer:
here is my answers, it is just my test....
Write down the value of x = 65 give your reason for your answer
Make the x the subject of the formula y= 7x + 4
Answer:
[tex]y = 7x + 4 \\ y - 4 = 7x \\ \frac{y - 4}{7} = \frac{7x}{7} \\ x = \frac{y - 4}{7} [/tex]
hope this helps you....
Answer:
x = y-4
7
Step-by-step explanation:
y = 7x + 4
y- 4 = 7x
[tex]\frac{y-4}{7}[/tex] =x
Yolanda reads 24 chapters of a book in 6 hours. What is her rate in chapters per hour?
Answer:
4 chapters an hour
Step-by-step explanation:
24 / 6 = average of 4 chapters an hour
Answer:
4 chapters per hour
Step-by-step explanation:
[tex]rate \: of \: reading \\ = \frac{total \: chapters}{total \: time} \\ \\ = \frac{24}{6} \\ \\ = 4 \: chapters \: per \: hour[/tex]
A zoo has some new exhibits.
In a survey, 2400 zoo attendants are asked to choose their favorite.
The results are shown in the following table.
(a) find the percentage for each type of animal.
Answer:
Elephant 14%
Panda 18%
Tiger 29%
Bonobo 39%
Step-by-step explanation:
Divide each number by 2400 then multiply the answer by 100.
The percentage of elephants, pandas, tigers, and bonobos are 14%, 18%, 29%, and 39% respectively.
What is the percentage?It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.
It is given that:
The zoo has some new exhibits.
In a survey, 2400 zoo attendants are asked to choose their favorite.
From the table:
The total number of animals = 336 + 432 + 696 + 936 = 2400
Percentage of Elephant = (336/2400)x100 = 14%
Percentage of Panda = (432/2400)x100 = 18%
Percentage of Tiger = (696/2400)x100 = 29%
Percentage of Bonobo = (936/2400)x100 = 39%
Thus, the percentage of elephants, pandas, tigers, and bonobos are 14%, 18%, 29%, and 39% respectively.
Learn more about the percentage here:
brainly.com/question/8011401
#SPJ2
Calculate the simple interest on
N650.00 for 2 years at 6% per
annum.
Answer:
N78
Step-by-step explanation:
The explanation is in the picture
please rate and mark as brainliest
An angle measures 49.4° less than the measure of its complementary angle. What is the measure of each angle?
Answer:
40.6
Step-by-step explanation:
Pretty sure a complementary angle is 90 so 90-49.4=40.6
the wheels of a bicycle are 0.6 m in diameter. If I go around the bike block, each wheel will perform 346 full turns. What distance, to the tenth of a meter ready, that represents it
Answer:
The distance that represents it is 651.9 m.
Step-by-step explanation:
In order to calculate the distance that the wheel travelled we need to find the length of the circumference of the wheel. This is given by the following formula:
length = 2*pi*r = pi*d
Since the diameter of the wheel is 0.6 m we can find the length of the wheel that is:
length = 3.14*0.6 = 1.884 m
The wheel made 346 full turns, that means that the total distance is the number of turns multiplied by the length of the wheel.
distance = 346*1.884 = 651.9 m
The distance that represents it is 651.9 m.
A 12 sided die with sides labeled 1 through 12 will be rolled once each number greater than 10?
Answer:
See the explaination
Step-by-step explanation:
Total No. of rolling each side of the 12-sided die= 12 x 12= 144 outcomes
No. of outcomes equals 10 are: (1, 9), (9, 1), (2, 8), (8, 2), (3, 7), (7, 3), (4, 6), (6, 4), (5, 5) = 9 outcomes.
No. of outcomes of rolling a No. >10: 144–9 = 135 outcomes.
Probability, Pr, of rolling a No. >10= 135/144
Pr (No. >10) = 0.9375 (to 4 dec. pl.)
Answer: I think you’re missing something on your question. But I think what your asking is how many numbers greater than 10. It should 2/12 or
Step-by-step explanation: