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Naddik [55]
2 years ago
15

I will give brainliest to first (2x^2 − 7x^3 + 8x) + (−8x^3 − 3x^2 + 4)

Mathematics
2 answers:
valkas [14]2 years ago
5 0

Answer:

Step-by-step explanation:

-7x^3 - 8x^3 - 3x^2 + 2x^2 + 8x + 4

-15x^3 - x^2 + 8x + 4

cluponka [151]2 years ago
4 0

Answer:-15x^3-x^2+8x+4

Sry if I am wrong

Step-by-step explanation:

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Does anybody know this answer????
Ira Lisetskai [31]

Answer:

959.42 x 10³

Step-by-step explanation:

9.62 x 10⁵ - 2.58 x 10³

= 962 x 10³ - 2.58 x 10³

= 959.42 x 10³

4 0
2 years ago
Read 2 more answers
A teacher has 14 senior students, 7 junior students, 4 sophmore, 5 freshmen, what is the proabability that she chooses a senior?
Stella [2.4K]

Answer:

7/15

Step-by-step explanation:

To find the probability the student is a senior

P( senior) = number of seniors / total students

                = 14 / ( 14+7+4+5)

               = 14/30

               = 7/15

6 0
2 years ago
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The sum of two numbers is 79,and their difference is 33
DerKrebs [107]

Answer: infinite answers, jk there is like a lot tho

Step-by-step explanation: The sum of x and y is 79. In other words, x plus y equals 79 and can be written as equation A:

x + y = 79

The difference between x and y is 23. In other words, x minus y equals 23 and can be written as equation B:

x - y = 23

Now solve equation B for x to get the revised equation B:

x - y = 23

x = 23 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 79

23 + y + y = 79

23 + 2y = 79

2y = 56

y = 28

Now we know y is 28. Which means that we can substitute y for 28 in equation A and solve for x:

x + y = 79

x + 28 = 79

X = 51

Summary: The sum of the two numbers is 79 and their difference is 23. What are the two numbers? Answer: 51 and 28 as proven here:

Sum: 51 + 28 = 79

Difference: 51 - 28 = 23

Please give me brainliest

7 0
2 years ago
Help with this problem please !!!!!
Karolina [17]

Answer:

28

Step-by-step explanation:

Cross multiply

18k = 12 x 42

18 k = 504

   k = 504/18

   k = 28

3 0
3 years ago
Read 2 more answers
The first 2 terms of an ap is -2 and 3 how many terms are needed for the sum to be equal to 306 ​
Zepler [3.9K]

Answer:

306

Step-by-step explanation:

-2 + 3 = 1

so really it would take 306 times to get to this

6 0
3 years ago
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