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3 years ago

Help me please I don't understand how to do it

Mathematics

1 answer:

mr_godi [17]3 years ago

4 0

X^2 + 4x -21
= (x +7)(x - 3)

hope that helps

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|v|>3 solution to the inequality on the number line

Andrew [12]

On a number line, v would be all the numbers to the left of -3 (for example, |-4|=4 which is greater than 3) and all the values to the right of positive 3. Since it can't equal 3, v=-3 and v=3 are not included on the number line.

3 0

3 years ago

can someone please help me out with this problem ? i been trying to do this for like 2 days now and i still don’t get it .. also

kotykmax [81]

Answer:

Step-by-step explanation:

the Pythagorean theorem is

c is the hypotenuse which is the side opposite of the right angle

plug the numbers into the Pythagorean theorem

$x^2+(\sqrt{26})^2=13^2$

when squaring a square root, just take the number in the radical and get rid of the radical

$x^2+26=169$

subtract 26 from both sides

$x^2=$ $143$

find the square root of 143

143 is prime so it can just be written as

$x=\sqrt{143}$

6 0

3 years ago

How do you translate this sentence into an inequality?

iren [92.7K]

5/8x $\leq$ 15

8 0

3 years ago

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How many roots would the quadratic y=x^3+2x^2-12x have?

oksano4ka [1.4K]

Answer:

Hi! The answer to your questions is 3 Roots

Step-by-step explanation:

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☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

4 0

3 years ago

The expressions a(8<img src="https://tex.z-dn.net/?f=x" id="TexFormula1" title="x" alt="x" align="absmiddle" class="latex-formul

amid [387]

Answer:

The expressions a(8x+7) and 4x + 3.5 are equivalent

Therefore, according to the above problem the equation is :---

$a(8x + 7) = (4x + 3.5) \\ 8ax + 7a = 4x + 3.5$

By comparing the term, we get

$8ax = 4x \\ 8a = 4 \\ a = \frac{4}{8} \\ \boxed{a = \frac{1}{2} }$

and,

$7a = 3.5 \\ a = \frac{3.5}{7} \\ \boxed{a = \frac{1}{2} }$

<h3>The value of "a" is <u>1/2</u>.</h3>

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3 years ago

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