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3 years ago

Can someone help me with this please

Mathematics

1 answer:

aliya0001 [1]3 years ago

3 0

Put triangles (or any shape) around the variables and underline the numbers! the question wants you to show how alike the things in the expressions are, and shapes are a great way to do so. i like to use different colors so it’s easier to see

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Solve x^2-8x-9=0 using completing the square (show the work)

Elden [556K]

Answer: x=9,-1

Step-by-step explanation:

First, we are gonna start out with finding two numbers that multiply to equal -9 and add up to equal -8

Those numbers would be -9 & 1

-9+1=-8

-9x1=-9

Now we have

(x-9)(x+1)

x-9=0 x+1=0

+9 +9 -1 -1

x=9 x=-1

3 0

3 years ago

Solve the equation 7(w +13) = 35. ) What is the value of w?

Nina [5.8K]

Answer: -8

Step-by-step explanation:

7(w+13)=35 [given]
w+13=5 [divide both sides by 7]
w = -8 [subtract 13 from both sides]

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2 years ago

Read 2 more answers

What is the measure of Select one: A. 57° B. 63° C. 111° D. 101°

vekshin1

I think it is a)57 because 84-27=57 or b because it is less than 90

4 0

3 years ago

The formula for the area of a triangle is A=1/2bh

Molodets [167]

Answer:

$h=\dfrac{2A}{b}$

Step-by-step explanation:

The formula for the area of a triangle is given by :

$A=\dfrac{1}{2}bh$

Where

b is base and h is height

We need to rearrange the formula to solve for height h.

Cross multiply the given relation

$2A=bh$

Dividing both sides by b.

$\dfrac{2A}{b}=\dfrac{bh}{b}\\\\h=\dfrac{2A}{b}$

So, the formula for the height of the triangle is $\dfrac{2A}{b}$ .

6 0

3 years ago

Three out of five students would like to have a pizza party. If there is 50 students, what percent of students do not want a piz

Tema [17]

Answer:

40%

Step-by-step explanation:

8 0

3 years ago