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zloy xaker [14]
3 years ago
8

Multiply and simplify: 3a(4a2 – 5a + 12)

Mathematics
1 answer:
DochEvi [55]3 years ago
3 0
3a(4a²-5a+12)

12a³-15a²+36a

~Hope this helped!~
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How do I solve this problem? ​
natulia [17]

Step-by-step explanation:

you know the formulas ?

the area of a circle is : pi×r²

the circumference of a circle is : 2×pi×r

with r being the radius, which is half of the diameter.

so, here, r = 10/2 = 5 m

area = pi×r² = pi×5² = pi×25 or 25×pi m²

circumference = 2×pi×r = 2×pi×5 = 10×pi m

for the approximation we make the calculations with pi on the calculator and round to the nearest hundredth.

area = 25×pi ≈ 78.54 m²

circumference = 10×pi ≈ 31.42 m

5 0
3 years ago
30 POINTS AND BRAINLIST FOR RIGHT ANSWER
alukav5142 [94]

Answer:

59°

Explanation:

If you add the angles 99° from angle C in the top shape and add 22° on the bottom shape it will give you 121°. When you get this subtract it from 180°

180°-121°= 59°

So, it's 58°

You can check by adding 180°+121°+59° = 180°

6 0
3 years ago
Evaluate. -|-7 + 3| <br> 4<br> -4<br> -10
agasfer [191]
Your answer is 4

You have to use the distribute property and distribute the - to the -7 and the 3

The -7 will become and the 3 will become -3

Then you add those together and when you add a negative to a positive you basically subtract

So 7+-3 is 4

A is your answer
3 0
3 years ago
Which of the following is an equivalent expression to: -2(-5x - 8)
exis [7]

Answer:

10x + 16

Step-by-step explanation:

Doing the distributive property, we get the answer 10x + 16.

5 0
3 years ago
Read 2 more answers
Otto had two days to paint 9 paintings. He painted 5 1\5 yesterday. How many paintings does Otto need to paint today?
enot [183]

Answer:

He needs to paint 3 4/5 today.

Step-by-step explanation:

9 - 5 1/5 = 3 4/5

Otto will need to paint 3 4/5 today.

4 0
2 years ago
Read 2 more answers
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