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3 years ago

Factor completely 2x² − 12 + 10

Mathematics

1 answer:

NeX [460]3 years ago

5 0

Answer:

2(x + 1)(x - 5)

Step-by-step explanation:

First you need to find the GCF (greatest common factor). Each term has 2 in common. Factor the 2 out of each term. 2(x²- 6x + 5)

Next you need to solve inside the parenthesis with an x-puzzle. 2(x+1)(x-5)

Check your answer by multiplying. You should get the expression you began with. 2x² - 12 + 10

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Consider the equation and its solution. Negative 15 (x minus box) = 25. Negative 15 x + 30 = 25. Negative 15 x = negative 5. x =

Solnce55 [7]

Answer:

-2

Step-by-step explanation:

Between the first two steps we see ...

$15(x-\boxed{^})=25\\\\15x+30=25$

Applying the distributive property to the first equation and comparing to the second, we see that ...

$-15\boxed{^}=30\\\\\boxed{^}=\dfrac{30}{-15}=-2$

The number in the box should be -2.

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2 years ago

Read 2 more answers

KJ=3x+12 And KH=6x-15. What is KG?

Andreyy89

Answer:

Step-by-step explanation:

3x + 12 = 6x - 15

6x - 3x = 12 + 15

3x = 27

x = 9

KJ = KH = KG = 3x + 12

KG = 3.(9) + 12

KG = 27 + 12

KG = 39

I hope I helped you.

7 0

2 years ago

On the subway 8 out of 11 people are carrying a briefcase.Based on this information, if there are 700 people on the subway, then

Scorpion4ik [409]

Answer:

191 people do not have a briefcase

Step-by-step explanation:

Proportion states that the two ratios or fraction are equal

As per the given condition:

On the subway 8 out of 11 people are carrying a briefcase.

⇒Total number of people = 11

and number of people carrying a briefcase = 8

Remaining number of people that do not carrying a briefcase = 11-8 = 3

Now,

Based on this information, if there are 700 people on the subway

Let x be the number of people do not have a briefcase

By definition of proportion :

$\frac{3}{11} = \frac{x}{700}$

Multiply 700 both sides, we have

$\frac{3}{11} \times 700 = x$

Simplify:

x = 190.90≈ 191

Therefore, 191 people do not have a briefcase

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2 years ago

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Molodets [167]

Answer:

The answer is <u>C : a cylinder with a base radius of 9 inches</u>

Step-by-step explanation:

The area is 270² inches, and to find the area of a rectangle is width × length . So the equation would be 270 = W × L, which would convert to 270 = W × 15 and 15 times 18 equals 270. But that is not thew answer because you would need top find the radius of the cylinder which is half of the width of the rectangle which means the radius is 9. So the answer is a<u> cylinder with a base radius of 9 inches. </u>

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2 years ago

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nevsk [136]

Step-by-step explanation:

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