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anastassius [24]
3 years ago
8

Evaluate the expression 7a² - 3b³ when a) a= 4, b= -2 b) a= -8, b=5

Mathematics
1 answer:
vovikov84 [41]3 years ago
8 0

Answer

Step-by-step explanation:

7a²-3b²

Replace a=4, b=2

7*4²-3*2²

= 112-12

= 100 first answer

7a²-3b²

Replace a=8, b=5

7*8²-3*5²

448-75

= 373 second answer

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Step-by-step explanation:

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3 years ago
6. A prism has bases that are equilateral triangles with sides lengths of 10 inches and a length of 30 inches.
vova2212 [387]

Answer:

The volume of the prism is 1,299\ in^{3}

Step-by-step explanation:

we know that

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V=BL

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we have

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substitute

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4 0
3 years ago
Which the most accurate statement about progress monitoring?
swat32

The most accurate statement about progress monitoring is progress monitoring is a useful way to ensure children are participating in targeted, purposeful, and meaningful math instruction and allows for the teacher to identify the skills children may need additional support in. Option A

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7 0
2 years ago
HELPPPPPP!!!!!!!!!!!!!!!!!
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Answer:

The student is wrong.

Step-by-step explanation:

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