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ExtremeBDS [4]
3 years ago
10

Consider the quadratic function that has x-intercepts of –1 and –7 and passes through the point (–2, –20). What is the value of

a in the factored form of this function?
Mathematics
2 answers:
iVinArrow [24]3 years ago
6 0
The correct answer is 4
andriy [413]3 years ago
3 0
Yes she is correct the answer is 4

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The price of a computer was decreased by 7% to £500. What was the price before the decrease? Give your answer to the nearest pen
aliina [53]

Answer:

537.6

Step-by-step explanation:

0.93*x=500

x=500/0.93

x=537.6

8 0
3 years ago
MULTIPLE CHOICE HELP ASAP! Brainliest for correct answer.
N76 [4]

Answer:

An equation of the circle with centre (-2,1) and radius 3 is \mathbf{(x+2)^2+(x-1)^2=9}

Option D is correct.

Step-by-step explanation:

Looking at the figure we get centre of circle C (-2,1) and radius of circle r = 3

The equation of circle is of form: (x-h)^2+(x-k)^2=r^2 where (h,k) is centre and r is radius.

We have centre C (-2,1) so, we have h = -2 and k = 1

We have radius = 3 so, r = 3

Putting values in the equation and finding the required equation:

(x-h)^2+(x-k)^2=r^2\\(x-(-2))^2+(x-1)^2=(3)^2\\(x+2)^2+(x-1)^2=9

So,  an equation of the circle with centre (-2,1) and radius 3 is \mathbf{(x+2)^2+(x-1)^2=9}

Option D is correct.

7 0
2 years ago
Find the circumference of a circle where r=1.5​
il63 [147K]

Answer:

there are three different types of answers to this and all of them have to do with the perspective of pi

1) if you don't want to see the decimals and you want to leave pi alone your answer would be this

3pi

2) if you want to solve for pi it would be

9.43 respectively

3) if you want pi to just be narrowed down to 3 digits 3.14 your answer would be

9.42

Step-by-step explanation:

formula

C=2*pi*R

plug in

2*pi*1.5

5 0
3 years ago
Read 2 more answers
If Bill wants to find the average of his family's heights. If his brother is 60 inches tall, his
Romashka [77]

Answer: 56 inches

Step-by-step explanation:

a. 60+58+64+72=254 (Add the average of his family without including him)

a. 62x5=310 (The average times 5, cause there are 5 of them will get you the total number of inches)

b. 310-254=56 (Subtract the total number of the 5 of them with the 4 of them to find Bill's height)

you can check your answer by adding all their heights.

4 0
1 year ago
What's the sum of an infinite geometric series if the first term is 156 and the common ratio is 2∕3?
DENIUS [597]

Answer:

468

Step-by-step explanation:

Formula for infinite sum of geometric series is;

S_∞ = a1/(1 - r)

Where;

a1 is first term

r is common ratio

We are given;

a1 = 156

r = ⅔

Thus;

S_∞ = 156/(1 - ⅔)

S_∞ = 156/(⅓)

S_∞ = 468

4 0
3 years ago
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