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viva [34]
3 years ago
12

What’s the answer???

Mathematics
1 answer:
iren2701 [21]3 years ago
7 0

Answer:

d. 32

Step-by-step explanation:

6x2=12

10x2=20

20+12 is 32

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Could you guys please solve these equations?
Andrej [43]

Answer:

x = 4

b = 7

n = 40

I hope this helps!!!

Step-by-step explanation:

1) 12x-17 = 6x+7

        +17       +17

*do this because you want to get all of the variables to one side and all of the constants to one side*

12x = 6x + 24

-6x    -6x

6x = 24

*divide by 6 to get x alone, so you 24/6 = 4*

x = 4

2) -8b+1 = -5(b+4)

*must multiply -5 by everything in the parenthesises*

-8b+1 = -5b-20

     -1           -1

-8b= -5b-21

+5b  +5b

-3b = -21

b = 7

3) 350+10(n-7) = 630+2(n-15)

350+10n-70 = 630+2n-30

*combine like terms on both sides of the equation*

280+10n = 600+2n

-280           -280

10n = 320+2n

-2n            -2n

8n = 320

n = 40

8 0
3 years ago
The width of a rectangle is the length minus 3 units. The area of the rectangle is 10
sergeinik [125]

Answer:

w=2

Step-by-step explanation:

A=length times width (A=lw)

w= l-3

A=10

Substituting in, we get:

10= l(l-3)

Now, solve the equation.

10= l^{2}-3l

l^{2}-3l-10=0

(l+2) (l-5)=0 (factoring the equation)

Therefore, l= -2 or 5

Throw out the negative value because a length of rectangle will never be negative.

Now let's solve for width

Remember w=l-3

therefore

(5)-3=2

so, w=2

(honestly, this is easier to just do in your head. But here is the long form math if you happen to run into more complicated problems.)

3 0
3 years ago
The mass of the boulder is 48,567 kilograms. what is the mass of the boulder in metric tons
butalik [34]
1 KG = .001 metric tons. Move the decimal point over three to make it 48.567 metric tons.
7 0
3 years ago
Read 2 more answers
Solve for the indicated variable 4c=d for c
Georgia [21]
<em>∙•❁</em>Okay so we are going to solve for c so lets begin.<em>❁•∙ </em>

4c=d

<em>∙•❁</em>We are going to divide both sides by 4.

\frac{4c}{4}= \frac{d}{4}

<em>∙•❁</em>Your Final answer is:

c= \frac{1}{4}d

<em>∙•❁I hope this helps!❁•∙ </em>
8 0
3 years ago
2|x-4|-7 is less than or equal to 1
ElenaW [278]

Answer:

= to

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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