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Dmitrij [34]
3 years ago
13

Plz answer 19. And 20. Until Friday it's DUE FRIDAY.

Mathematics
1 answer:
scoray [572]3 years ago
7 0
Very easy:
Find volume by formula: W*H*L
6*5*4=120
10*10*2=200
120+200=320 cubic inches for first question
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What does a equal -5(6a+21)=-15
borishaifa [10]
Step 1 : Simplify both sides
-5(6a+21)=-15
(-5)(6a)+(-5)(21)=-15
-30a-105=-15
Step 2 : Add 105 to both sides
-30a-105+105=-15+105
-30a=90
Step 3 : Divide both sides by -30
-30a=90
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a = -3
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3 years ago
What is the solution to the system of equations?
o-na [289]

Answer:

x = -5

y = 4

Step-by-step explanation:

3x + 4y = 1    /*(-4)

4x + 5y = 0   /*3

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-12x - 16y = -4

12x + 15y = 0     +

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-y = -4

y = 4

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12x = -15y

12x = -60

x = -5

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What is the solution for the equation 5/3b^3-2b^2-5=2/b^3-2
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I looked it up and it said it was c 
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Answer:

The factors for 5 are going to be 1 and 5 or their negative counterparts, since no other whole number within the range of 5 can be multiplied to get 5.

Make sense?

5 0
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