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Misha Larkins [42]

2 years ago

10

Express as a trinomial. (2 – 4)(2x + 3)

2 answers:

Karolina [17]2 years ago

5 0

Answer:

-2(2x+3)

Step-by-step explanation:

Sergeeva-Olga [200]2 years ago

3 0

Answer:

-2 (2x + 3)

Step-by-step explanation:

We need to use FOIL

Multiply the FIRST terms of each set together

Then the OUTSIDE terms

Then the INSIDE terms

and then the LAST terms

Thus:

$2*2x = 4x$

$2*3 = 6$

$-4*3 = -12$

$-4*2x = -8x$

So finally we end up with 4x + 6 - 12 - 8x

Simplifying this gives us -4x - 6

We can then factor out -2 from each factor, giving: -2(2x+3)

Hope this helps!

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A ball is kicked with an initial height of 0.75 meters and initial upward velocity of 22 meters/second. this inequality represen

BARSIC [14]

Answer:

t is between 0.47 seconds and 4.02 seconds

Step-by-step explanation:

Given

$Inequality: -4.9t^2+22t+0.75>10$

Required

Determine the values of t

$-4.9t^2+22t+0.75>10$

Subtract 10 from both sides

$-4.9t^2+22t+0.75 - 10 >10 - 10$

$-4.9t^2+22t-9.25 >0$

Multiply through y -1

$4.9t^2-22t+9.25$

Solve t using quadratic formula:

$t = \frac{-b \±\sqrt{b^2 - 4ac}}{2a}$

Where

$a = 4.9$

$b = -22$

$c = 9.25$

So, we have:

$t = \frac{-(-22) \±\sqrt{(-22)^2 - 4*4.9*9.25}}{2 * 4.9}$

$t = \frac{22 \±\sqrt{484 - 181.3}}{9.8}$

$t = \frac{22 \±\sqrt{302.7}}{9.8}$

$t = \frac{22 \±17.40}{9.8}$

Split the equation

$t = \frac{22 + 17.40}{9.8}$ or $t = \frac{22 - 17.40}{9.8}$

$t = \frac{39.4}{9.8}$ or $t = \frac{4.6}{9.8}$

$t = \frac{39.4}{9.8}$ or $t = \frac{4.6}{9.8}$

$t = 4.02$ or $t = 0.47$

Hence; the range is

$0.47 < t$

4 0

3 years ago

Hey uh guys i need help pls thanks

vivado [14]

i don’t know for sure but i just figured it out....

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2 years ago

A class of 28 students has 13 boys and 15 girls. What is the ratio of girls to boys in the class? 15:28 13:15 O 13:28 15:13 Prev

uranmaximum [27]

Answer: $\frac{15}{13}$

Step-by-step explanation:

Given

There are 28 students in a class out of which

13 are boys so the remaining 15 are girls

Ratio of girls to boys in the class $=\frac{15}{13}$

8 0

3 years ago

Centimeter cubes were used to build the prism. What is the volume of the prism?

ioda

Volume = lxwxh .

Centimeter square

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3 years ago

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A freight train is traveling at an average rate of 45 miles per hour. Which equation represents the situation?

ollegr [7]

Hi there!

The answer would be A. m = 45h

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2 years ago

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