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maxonik [38]
3 years ago
12

Answer this question (x −2)(x + 5) = 18

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0

Answer:

x=-7     x=4

Step-by-step explanation:

(x −2)(x + 5) = 18

Foil

x^2 +5x-2x-10 = 18

Combine like terms

x^2 +3x -10 =18

Subtract 18 from each side

x^2 +3x -28 = 0

Factor

What two numbers multiply to -28 and add to 3:   7 and -4

(x+7) (x-4) =0

Using the zero product property

x+7=0    x-4 =0

x=-7     x=4

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Find the degree measure of each angle in the triangle
Karo-lina-s [1.5K]

Answer:

∠L = 43°

∠M = 121°

∠N = 16°

Step-by-step explanation:

<u>Start by setting all sides equal to 180</u>

3x - 5 + 7x + 9 + x = 180

<u>Add like terms</u>

11x + 4 = 180

<u>Solve for x</u>

11x + 4 = 180

      - 4     - 4

      11x = 176

     / 11     /11

        x = 16

<u>Now, plug in 16 for all instances of x on the triangle and solve.</u>

∠L = 43°

∠M = 121°

∠N = 16°

4 0
3 years ago
Factor of 32 other factor is 4 what number am i
mrs_skeptik [129]
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3 0
3 years ago
4.1.3 Quiz: Simple interest
Ne4ueva [31]

Answer:

simple intrest

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4 0
3 years ago
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Could someone help me please it’s a math question !
salantis [7]

Answer:

1/4

Step-by-step explanation:

The answer the other guy told is wrong.

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6 0
3 years ago
Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of \$10$10 from e
snow_tiger [21]

Answer:

$1200.

Step-by-step explanation:

We have been given that Kiersten runs a website that helps people learn programming. Every month, Kiersten receives a subscription fee of $10 from each of the subscribers to her website.    

Let us find number of subscriber that will pay this month Kiersten for her online business.

Last month, the website had 100 subscribers. This month, 30 new members joined the website, and 10 members cancelled their subscription, therefore, number of subscriber this month will be 100+30-10=130-10=120 subscribers.  

To find amount that Kiersten will receive from online business we will multiply 10 by 120.  

\text{Kiersten will earn from online business}=120\cdot 10

\text{Kiersten will earn from online business}=1200

Therefore, Kiersten will earn $1200 from online business this month.


4 0
3 years ago
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