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aev [14]
3 years ago
10

How do you factor x squared minus 100

Mathematics
1 answer:
Alina [70]3 years ago
6 0

Answer:

(x - 10)(x + 10)

Step-by-step explanation:

x² - 100 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

Hence

x² - 100

= x² - 10² = (x - 10)(x + 10)

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Answer:

Step-by-step explanation:

3(x + 4) - 5 = 2x + 4

solve for x

x = -3

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What is the total monthly payment for this mortgage? Principal Per Month $750 Interest Per Month $120 Property Tax Per Year 0.5
m_a_m_a [10]
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Answer:

A

Step-by-step explanation:

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8 0
3 years ago
Complete the steps of the derivation of the quadratic formula step 1: (x+b/2a)^2-b^2-4ac/4a^2=0
CaHeK987 [17]
(x+b/2a)^2-(b^2-4ac)/2a=0
Step 2:
Re-write the expression:
(x+b/2a)^2=(b^2-4ac)/4a^2

Step 3:
get the square root of both sides:
x+b/2a=sqrt[(b^2-4ac)/4a^2]

Step 4:
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Step 5
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5 0
3 years ago
Read 2 more answers
Marshall earns a salary of $36,000, and each
Anton [14]

Answer:

Let Marshall's salary be  

S

m

Let Jim's salary be

     

S

j

Let the count in years be  

n

S

m

=

$

36000

+

4000

n

S

j

=

$

51000

+

1500

n

Set  

S

m

=

S

j

For convenience lets drop the $ symbol

⇒

36000

+

4000

n

 

=

 

51000

+

1500

n

Subtract  

1500

n

and

36000

from both sides

4000

n

−

1500

n

=

51000

−

36000

2500

n

=

15000

Divide both sides by 2500

n

=

15000

2500

=

150

25

=

6

Step-by-step explanation:

7 0
3 years ago
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