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3 years ago

-x/7 - 8 = 1, what does x equal?

Mathematics

2 answers:

sammy [17]3 years ago

8 0

Answer:

-63

Step-by-step explanation:

Hope this helps

Degger [83]3 years ago

7 0

Answer:

x=-63

Step-by-step explanation:

Start by adding 8 to 1

-x/7-8=1--- -x/7=9

Then multiply -7 to both sides

-x/7=9--- x=-63

I hope this helps you :)

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3 years ago

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If ^dec=^bec,wich is true by cpctc

lesya692 [45]

Answer:

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Step-by-step explanation:

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3 years ago

Can you solve this for me please<br><br><br>

Taya2010 [7]

Answer:

b) 36

Step-by-step explanation:

area= ((sum of parallel lines) / 2) * hight

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2 years ago

What is the solution for this system of linear equations?<br> {23x+4=y<br> 4−2x=y

liubo4ka [24]

We can subsitute since
23x+4=y and
4-2x=y
therefor
23x+4=y=4-2x
so
23x+4=4-2x
minus 4 on both sides
23x=-2x
add 2x to both sides
25x=0
divide both sides by... uh oh
I guess x=0

sub
4-2(0)=y
4-0=y
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the solution is (0,4)

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4 years ago

You must select a team from a group of 6 boys and 10 girls. How many ways can you select 2 boys and 5 girls?

Keith_Richards [23]

Using the combination formula, it is found that you can select 2 boys and 5 girls in 2,520 ways.

In this problem, Joao and Elisa would be the same team as Elisa and Joao, hence the order is not important and the <em>combination formula</em> is used to solve this question.

<h3>What is the combination formula?</h3>

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by:

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this problem:

2 boys are selected from a set of 6.

5 girls are selected from a set of 10.

Hence:

$T = C_{5,2}C_{10,5} = \frac{5!}{3!2!} \times \frac{10!}{5!5!} = 2520$

You can select 2 boys and 5 girls in 2,520 ways.

More can be learned about the combination formula at brainly.com/question/25821700

#SPJ1

6 0

2 years ago