3 years ago

Help i forgot to do this again plz halp

Mathematics

2 answers:

Stells [14]3 years ago

7 0

What do u need "halp" with? Msg me.

Sever21 [200]3 years ago

6 0

You forgot to do what? please include the question

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Please explain how and give the answer!

nadezda [96]

The mass of b equals the mass of d so
24(10-x)=6(x+15)
240-24x=6x+90
30x=150
x=5
mass of d is 6(5+15)=6*20=120
mass of c=180-mas of d=180-120=60°

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2 years ago

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PLS help meeeeeeee!!!!!! will mark as BRAINLIEST

Zolol [24]

We are asked to find 7 is what percent to 30.

We will use proportions to solve our given problem.

Let us assume that 7 is n% of 30. So we can set a proportion as:

$\frac{n}{100}=\frac{7}{30}$

Let us solve for n.

$\frac{n}{100}\cdot 100=\frac{7}{30}\cdot 100$

$n=\frac{7}{3}\cdot 10$

$n=\frac{70}{3}$

$n=23.333$

Therefore, 7 is $23.333\%$ of 30.

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2 years ago

I need help how do you solve #4

Sloan [31]

A + B + C = 180

A = B --> B = A

A = 4·C --> C = 1/4*A

A + A + 1/4*A = 180

2.25*A = 180

A = 80

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nevsk [136]

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