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zmey [24]
3 years ago
10

7th grade math plsssssss help

Mathematics
1 answer:
Aloiza [94]3 years ago
5 0

Answer:

64

Step-by-step explanation:

length(l)=8cm

breadth(b)=2cm

height(h)=4cm

volume=l×b×h

=8cm×2cm×4cm

=64cm³

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If k is parallel to l find the value of a and the value of b.
kipiarov [429]

Answer:

a = 30

b = 40

C

Step-by-step explanation:

This requires that you use a proportion.

a / (a + 15) = 40 / 60

The small triangle's sides are in proportion to the large triangles sides.

Reduce the right. Divide top and bottom by 20

a/(a + 15) = 40/20 // 60/20

a/(a + 15) = 2/3                    

Cross multiply

3a = 2(a + 15)            Remove the brackets on the right.

3a = 2a + 30

Subtract 2a from both sides

3a-2a = 30

a = 30

Find B

b is done exactly the same way.

b/(b+20) = 2/3

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3 0
3 years ago
A hair salon charges a fixed rate of $25.00 for a haircut and then an additional 515 for any other services. Write a function to
V125BC [204]

Answer:

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y=15(1)+25

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6 0
3 years ago
PLSSS HELP IF YOU TURLY KNOW THISS
dolphi86 [110]

Answer:

Step-by-step explanation:

\[1.49 times10^{-5}\]

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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Tpy6a [65]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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