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2 years ago

PLEASE HELP I WILL MARK BRAINLIEST!!!! :)

Mathematics

1 answer:

tia_tia [17]2 years ago

7 0

Answer: B

Explanation:
(75 + 90)/250 = 0.66 = 66% of students are 11 or 12
5/250 = 0.02 = 2% of students are 10
(90 + 70)/250 = 0.64 = 64% of students are 12 or 13
10/250 = 0.04 = 4% of students are 14

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What is the first step to solving the following equation?5x –11 = 42

alexdok [17]

Answer:

add the 11 to both sides to cancel it out.

Step-by-step explanation:

so basically

5x - 11 + 11 = 42 +11

5x = 53

3 0

3 years ago

A construction company plans to lean a 15ft ladder against a building from 7ft away. How far up the building will if reach?

ICE Princess25 [194]

Answer:

8 Feet

Step-by-step explanation:

15 feet subtract 7 feet is 8 feet

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3 years ago

How to simplify this expression ?

Musya8 [376]

Answer:

$\large \boxed{\sf \ \ \dfrac{1}{x^2}+\dfrac{1}{x^2+x}=\dfrac{2x+1}{x^2(x+1)} \ \ }$

Step-by-step explanation:

Hello,

This is the same method as computing for instance:

$\dfrac{1}{2}+\dfrac{1}{3}=\dfrac{3+2}{2*3}=\dfrac{5}{6}$

We need to find the same denominator.

Let's do it !

For any x real different from 0, we can write:

$\dfrac{1}{x^2}+\dfrac{1}{x^2+x}=\dfrac{1}{x^2}+\dfrac{1}{x(x+1)}\\\\=\dfrac{x+1+x}{x^2(x+1)}=\dfrac{2x+1}{x^2(x+1)}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

7 0

2 years ago

PLEASE HELPPPP, Graph the equations using slope intercept form. y = -3x + 8

Zolol [24]

Answer:

Slope = -3

y- intercept= (0,8)

x : 0, 8/3

y : 8, 0

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2 years ago

Which is an example of the commutative property?

astra-53 [7]

A. <span>–13 + 27 = 27 + (–13) is an example of the commutative property.

The commutative property states that a + b = b + a.</span>

8 0

3 years ago