MATHEMATICS MIDDLE SCHOOL

4.
(5x2)(-4x3)
the 2 and the 3 are exponents

Answers

Answer 1
Answer:

Answer:

-20x⁵

Step-by-step explanation:

(5x^2)(-4x^3)=\bigg(5\cdot(-4)\bigg)(x^2x^3)\n\n\text{use}\ a^na^m=a^(n+m)\n\n=-20x^(2+3)=-20x^5

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What is the simple interest on $40,000 for 10 years at 12%?

Answers

Answer:

$48,000

Step-by-step explanation:

Simple interest

Principal x Rate x Time / 100

40,000 x 12 x 10 / 100 = $48,000

Answer:

48,000

Step-by-step explanation:

40,000 X 0.12 X 10

What are the roots of the polynomial equation?

x^2 + x -72 =0

Answers

There are many ways you can go. I'm going to start out factoring the whole thing.
(x+9)(x-8) = 0
seperate these into two different equations.
x+9 = 0     and       x-8 = 0
x= -9                      x=8
 Make sure you check it by substituting. Sometimes you might have to reject an answer. In this case you don't. Therefore, 8 and -9 are your roots!

Answer:

Step-by-step explanation:

Make sure you put them in the correct order:

Help please Solving Systems Using InspectionHow many solutions does this system of equations have?



A.
none

B.
exactly one

C.
exactly two

D.
infinitely many

Answers

The lines appear to be parallel. We can check this out by examining the
two equations, and we see that sure enough, both lines have the same
slope (1/2) so they're definitely parallel.  Parallel lines never intersect,
so this pair of equations has NO solutions.  NONE.  Zero. Bubkes. Nada.

The Other dude is correct I did the test

The answer is None

A membership to the local gym $40 and then $2 per visit. What is the maximum number of visit that can be made for $90? Is the function's model linear or exponential?

Answers

Answer:

90-40=50. 50÷2=25. so 25 visits

Please help i have to go to school in 40 min

Answers

2. 24/10 (if need to simplify it's 12/5)
3. 8/5 (can't simplify more)
5.60/5 (simply 12/1 = 12)
6.21/10 (can't simplify)
5: 12, 6: 2 and 1/10, 2: 2 and 2/5, 3: 1 and 3/5 to figure it out do whole number x numerator divided by denominator

The cost of renting a bicycle is $9 for the first hour plus another $4 for eachadditional hour. Which of the following represents this situation, where Cis
the total cost of renting a bicycle for h hours?

Answers

The missing choices are:

A. C = 9h + 4

B. C = 4h + 9

C. C = 4(h - 1) + 9

D. C = 13h

C = 4(h - 1) + 9 represents this situation ⇒ answer C

Step-by-step explanation:

The given is:

  • The cost of renting a bicycle is $9 for the first hour
  • Another $4 for each  additional hour
  • C is  the total cost of renting a bicycle for h hours

We need to find which of the following represents this situation

∵ The cost of renting a bicycle is $9 for the first hour

∵ Another $4 for each  additional hour

∵ h represents the number of hours

- Add the cost of the first hour to the cost of the remaining hours

∵ The remaining hours = h - 1

∴ The cost of the remaining hours = 4(h - 1)

∵ C is the cost of renting the bicycle for h hour

- Add 9 to 4(h - 1) to find C

∴ C = 4(h -1) + 9

C = 4(h - 1) + 9 represents this situation

Learn more:

You can learn more about the word problems in brainly.com/question/10557938

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