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3 years ago

7

To solve the equation −x − 3 = x2 − 2x− 15, you could graph of the following system. y = −x − 3 y = x2 − 2x − 15 Use the graph o

f this system to identify all solutions of −x − 3 = x2 − 2x − 15. A. -7 B. -3 C. 0 D. 4

1 answer:

soldier1979 [14.2K]3 years ago

7 0

Answer:

I think option (D) 4 is correct

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PLEASE HELP QUICK WILL MARK BRAINLIEST.

ioda

Answer:

4.57

Step-by-step explanation:

7 can go into 32 4 times but your remainder is going to be 5

5 0

3 years ago

Use a net to find the surface Area of the square pyramid The height of the pyramid is 9 yes and the base sides are all 2.5 yrds

Cerrena [4.2K]

Answer:

$Area = 51.68yd^2$

Step-by-step explanation:

Given

$h = 9yd$ -- height

$a = 2.5yd$ --- base sides

Required

Determine the surface area

The net is not given. So, I will solve directly.

The surface area is calculated as:

$Area = a^2 + 2a\sqrt{\frac{a^2}{4} + h^2}$

So, we have:

$Area = 2.5^2 + 2*2.5\sqrt{\frac{2.5^2}{4} + 9^2}$

$Area = 6.25 + 5\sqrt{\frac{6.25}{4} + 81}$

$Area = 6.25 + 5\sqrt{1.5625 + 81}$

$Area = 6.25 + 5\sqrt{82.5625}$

$Area = 6.25 + 5* 9.086$

$Area = 51.68yd^2$

6 0

3 years ago

What is the area of triangle UVW? (Scale factor question picture included)

Marta_Voda [28]

A= 320 cm2 and that is the answer

6 0

3 years ago

What is the mean of 17, 9, 11,7/

Anna11 [10]

Answer:

11

Step-by-step explanation:

17 + 9 +11 + 7 = 44

44/4 = 11

3 0

2 years ago

An OSU senior is studying for exams in psychology and economics. The student has time to read 50 pages of psychology and 10 page

cestrela7 [59]

Answer:

3 Pages

Step-by-step explanation:

Let the pages of economics read = e
Let the pages of psychology read = p
Let the total time taken on each instance=t

In the first instance, the student has time to read 50 pages of psychology and 10 pages of economics.

t=50p+10e

The student could read 30 pages of psychology and 70 pages of economics.

t=30p+70e

Since the two situations take the same amount of time, we have:

50p+10e=30p+70e

Collect like terms

50p-30p=70e-10e

20p=60e

Divide both sides by 20

p=3e

Therefore, in the time it will take the student to read 1 page of psychology, the student can read 3 pages of economics.

8 0

3 years ago