3 years ago

I need this one answered too, I'm not very good at fractions...

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

4 0

b is correct! good job :)

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Solve: -2x - 5 = -3 <br> plz help me hurry

lord [1]

Answer:

x=-1

Step-by-step explanation:

-2x - 5 = -3

add 5 to both sides

-2x = 2

divide both sides by -2

x = -1

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2 years ago

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The roots of the equation (blank) are x=2+-i.

professor190 [17]

The answer is x^2-4x+5=0

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2 years ago

The answer is 8 but how do you solve it<br><br> 6-2(3-4)

Neko [114]

Start with the parentheses

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3 years ago

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3241004551 [841]

Answer:

$f(x)=(2x+1)(2x-1)$ .

Step-by-step explanation:

We want to convert the function into the form that let's us easily find the x-intercept, and it would be for the form $(ax+b)(cx+d)$ because then we can find the x-intercept in the following manner:

$(ax+b)(cx+d)=0$

$x=-b/a$

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We factor our function $f(x)=4x^2-1$ and get

$\boxed{f(x)=(2x+1)(2x-1)}$

Now this form let's us easily find the x-intercepts:

$x=-1/2$

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and so we pick the second choice: f(x)=(2x+1)(2x-1).

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In a movie theater, there are children and adults in the ratio 4:7. If there are 21 adults, how many people total are there in t

lozanna [386]

Answer:

Step-by-step explanation:

7x3=21

4x3=12

21+12=33

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