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Molodets [167]
3 years ago
14

Correct answer's only (Highlighted due to glitch) But please help.

Mathematics
1 answer:
andrew-mc [135]3 years ago
3 0
The easiest way is to plug x=-4, y=-1 in the equation to see which one works.
8(-4)-9(-1)=-23
B is correct.
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I need help please ASAP im gonna fail if i dont get right will give 51 points
evablogger [386]

1. x = 20 , x² = 400 and x³ = 8000

2. x = 7 , x² = 49 and x³ = 343

Step-by-step explanation:

Given values are;

2000, 7, 400, 20, 4000, 200

We have to find x, x² and x³.

Part 1:

x^3=8000

We will take cube root to find x.

\sqrt[3]{x^3} =\sqrt[3]{8000}

x=20

Now, we will take square;

(x)^2=(20)^2\\x^2=400

Therefore;

x = 20 , x² = 400 and x³ = 8000

Part 2:

x² = 49 , x³ = 343

Taking square root on x²

\sqrt{x^2}=\sqrt{49}\\x=7

Therefore;

x = 7 , x² = 49 and x³ = 343

Keywords: cube root, square root

Learn more about cube root at:

  • brainly.com/question/9607945
  • brainly.com/question/9590016

#LearnwithBrainly

3 0
3 years ago
HELP!! Please answer 9 and ten with solution needed!!
sashaice [31]

Answer:

m=7 z=-12

Step-by-step explanation:

expand brackets:

8m+24=5m+45

Change sides:

8m-5m=45-24

3m=21

<u>m=7</u>

<u />

<u>z-6</u>    =  <u>3</u>

2z         4

Coss multiply:

4z-24=6z

4z-6z=24

-2z=24

Divide both sides by -2:

z=-12

4 0
2 years ago
Please help I’ll give brainliest
s344n2d4d5 [400]

Answer:

R = 13%

Step-by-step explanation:

P = $4000

I = $780

T = 18 months = 18/12 years

I  = \frac{PRT}{100} \\\\780 = \frac{ 4000 \times R \times \frac{18}{12}}{100}\\\\780 = \frac{6000 \times R }{100}\\\\780 = 60R\\\\R = \frac{780}{60} = 13 \%

5 0
3 years ago
Can someone give me the answers to this or how to find the answers to it?
faltersainse [42]

the discriminant formula is b^2-4ac

so plug the values from each equation into the formula and solve, the result is the value of the discriminant

if the number is negative, there are no real roots/x-int

if it is 0 there is one real root/x-intercepts

if it is positive it has 2 real roots/x-int

and to find the actual solutions you have to plug the values into the quadratic formula

6 0
3 years ago
Square the Monomials<br><br> (-7a^3b^5)^2 <br> - (9a^4bc)^2
Law Incorporation [45]

Answer:

1. 49a^6b^10

2. −81a^8b^2c^2

Step-by-step explanation:

N/A

3 0
2 years ago
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