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Kaylis [27]
2 years ago
9

NEED HELP!!!!! Heres the question

Mathematics
1 answer:
Semenov [28]2 years ago
3 0

Answer:

A. 5(-20)

Step-by-step explanation:

Since she repeatedly withdrawals money, the answer would be negative, so you can say that the other answers are definitely wrong.

Hope this helps :)

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A population of bacteria starts 8 and is doubling every 12 hours. What equation
Lina20 [59]

Answer:

a = 8 * (2)^(2x)

Step-by-step explanation:

There are 2 12hours periods in a day

a = 8 * (2)^(2x)

7 0
2 years ago
There are 207 students in 9 classes at east middle school at this rate how many students are in 6 classes
patriot [66]

Answer:

138 students

Step-by-step explanation:

207/9 = 23

23*6=138

4 0
2 years ago
Read 2 more answers
FIND THE MISSING SIDE LENGTH MATH HELP!!
Tom [10]

Answer:

n = 12

Step-by-step explanation:

4/6 = 8/n

4n = 48

n = 12

5 0
3 years ago
Solve each equation you must use
n200080 [17]

1) The solution for m² - 5m - 14 = 0 are x=7 and x=-2.

2)The solution for b² - 4b + 4 = 0 is x=2.

<u>Step-by-step explanation</u>:

The general form of quadratic equation is ax²+bx+c = 0

where

  • a is the coefficient of x².
  • b is the coefficient of x.
  • c is the constant term.

<u>To find the roots :</u>

  • Sum of the roots = b
  • Product of the roots = c

1) The given quadratic equation is m² - 5m - 14 = 0.

From the above equation, it can be determined that b = -5 and c = -14

The roots are -7 and 2.

  • Sum of the roots = -7+2 = -5
  • Product of the roots = -7\times2 = -14

The solution is given by (x-7) (x+2) = 0.

Therefore, the solutions are x=7 and x= -2.

2) The given quadratic equation is b² - 4b + 4 = 0.

From the above equation, it can be determined that b = -4 and c = 4

The roots are -2 and -2.

  • Sum of the roots = -2-2 = -4
  • Product of the roots = -2\times-2 = 4

The solution is given by (x-2) (x-2) = 0.

Therefore, the solution is x=2.

5 0
3 years ago
If f(x)= x2+2x-10, what id f(-2)
Sindrei [870]
The answer is -18. Hope this helps.
6 0
3 years ago
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