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nlexa [21]
3 years ago
13

Please answer this and I’ll make you Brainly

Mathematics
1 answer:
murzikaleks [220]3 years ago
3 0

Answer:

-4 = ?

Step-by-step explanation:

<u>Step 1:  Substitute -1 for x</u>

7x^3 + 5x^2 - 2 = ?

7(-1)^3 + 5(-1)^2 - 2 = ?

7(-1) + 5(1) - 2 = ?

-7 + 5 - 2 = ?

-4 = ?

Answer: -4 = ?

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can someone help me to solve these two problems pls I will really appreciate I will mark you the brainly!
zavuch27 [327]

Answer:

12. 524 in³ (3 sig. fig.)   13. 2000 cm³ (3 sig. fig.)

Step-by-step explanation:

12. Volume of sphere = (4/3)πr³

= 500/3π

= 524 in³ (3 sig. fig.)

13. Volume of cylinder = πr²h

= 7²π(13)

= 637π

= 2000 cm³ (3 sig. fig.)

4 0
3 years ago
② The complement of an<br> angle. is 10 more<br> than 3 times the<br> angle. Find both
Mrac [35]
Let x be the angle. The complement is 3x + 10. The sum of two complementary angles is 90. So,
x + 3x + 10 = 90
4x + 10 = 90
4x = 80
x = 20
Plug x into the complement
3(20) + 10 = 70

The angle is 20 degrees and the complement is 70 degrees

4 0
3 years ago
Solve the following rational equations. Identify the extraneous solution if there are any.
Novay_Z [31]

Answer:

answer

1.1/4

2.1

3.2

4.-4

5.-2

3 0
2 years ago
Read 2 more answers
What is the gcf of 21 30 anwhat is the gcf of 21 , 30 ,and 44?
Ymorist [56]
Find the prime factorization of each value.

21 is 7*3

30 is 3*10 which can be further broken down into 3*2*5

44 is 4*11 which can be further broken down into 2*2*11

What do they share in common?
21 and 30 each have a 3 in common.
Therefore the GCF(21, 30) = 3.

21 and 44 share a 2 in common.
But if we're looking at all three of them together, they share nothing in common.
5 0
3 years ago
Express 60,000 using exponents
pshichka [43]
6 times 10^4 is your answer hope i helped

3 0
3 years ago
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