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Serga [27]
3 years ago
5

Solve the following equation show your work x^2-4=0

Mathematics
1 answer:
arsen [322]3 years ago
7 0

Answer:

x = 2, x = - 2

Step-by-step explanation:

Step 1:

x² - 4 = 0            Equation

Step 2:

x² = 4         Add 4 on both sides

Step 3:

x = \sqrt{4}       Square 4

Answer:

x = 2, x = - 2

Hope This Helps :)

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Help with the question above! Pleaseeeeee!
SSSSS [86.1K]
Question 5:
 the circumference is given by:
 C = 2 * pi * r
 Where,
 r: radio of the ball
 Substituting values we have:
 22 = 2 * pi * r
 Clearing r we have:
 r = 11 / pi
 The surface area is given by:
 A = 4 * pi * r ^ 2
 Substituting values we have:
 A = 4 * 3.14 * (11 / 3.14) ^ 2
 A = 154 in ^ 2
 Answer:
 
The surface area of the balloon is:
 
A = 154 in ^ 2

 Question 8:
 For this case we have that the scale factor is given by:
 V1 = (k ^ 3) * V2
 Substituting values we have:
 729 = (k ^ 3) * 2744
 Clearing k:
 k = (729/2744) ^ (1/3)
 k = 9/14
 Answer:
 the scale factor of a cube with volume 729 m ^ 3 to a cube with volume 2,744 m ^ 3 is:
 9:14

 Question 2:
 The volume of the cylinder is given by:
 V = pi * r ^ 2 * h
 Where,
 r : radio
 h: height
 Substituting values:
 V = pi * (2.8) ^ 2 * (13)
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The volume of the cylinder is:
 
V = 101.92 * pi
 
option 3
4 0
3 years ago
Read 2 more answers
PLEASE HELP ME!! Kevin earns a base salary of $350.00 every week with an additional 12%
Mrrafil [7]
<h3>Answer:  944 dollars for the week</h3>

============================================================

Explanation:

He sold $4950 worth of items. Take 12% of this amount to get

12% of 4950 = 0.12*4950 = 594

So he earns $594 in commission on top of the $350 base salary paid every week. In total, he earns 594+350 = 944 dollars for that week

This isn't the per week pay because he would need to sell exactly $4950 worth of goods each week to keep this same weekly pay.

5 0
3 years ago
IS IT A OR B PLEASE ANSWER FOR BRAINLIEST!!!
maks197457 [2]
I say the answer is A, correct me if I'm wrong.
5 0
3 years ago
Two functions are shown below.
dimaraw [331]

Answer:

x=5

Step-by-step explanation:

Ok so put them equal to each other

2x+12=3x+7

subtract 12 from both sides

2x=3x-5

subtract 3x from both sides

-x=-5

divide both sides by -1

x=5

Have a wonderful day/night

Brainliest please.

5 0
2 years ago
Read 2 more answers
(2x-1+7x²)+(3+7x -3x²)
ANTONII [103]

Answer:

4x^{2} +9x+2

Step-by-step explanation:

You combine the x^{2} terms, the x terms and the constants (the terms without variable/letters)

5 0
1 year ago
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