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Svet_ta [14]
4 years ago
15

Solve 4x2-25<0 in words 4x squared -minus 25 < 0

Mathematics
1 answer:
muminat4 years ago
4 0
<h3>I'll teach you how to solve 4x^2-25<0</h3>

-------------------------------------------------

4x^2-25<0

Add 25 to both sides:

4x^2-25+25 < 0+25

Simplify:

4x^2 < 25

Divide both sides by 4:

4x^2/4 < 25/4

Simplify:

x^2 < 25/4

whole sqrt -25/4 < x < whole sqrt 25/4

whole sqrt 25/4= 5/2

-5/2 < x < 5/2

Your Answer Is -5/2 < x < 5/2

plz mark me as brainliest if this helped :)

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bonufazy [111]

Answer:

D.$750

Step-by-step explanation:

3000 x 0.25 = 750

8 0
4 years ago
Read 2 more answers
For the following linear system, put the augmented coefficient matrix into reduced row-echelon form.
guapka [62]

The augmented matrix is

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\2&-4&8&3&10&7\\3&-6&10&6&5&27\end{array}\right]

Add -2(row 1) to row 2, and add -3(row 1) to row 3:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&-1&8&-13\\0&0&1&0&2&-3\end{array}\right]

Add -1(row 2) to row 3:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&-1&8&-13\\0&0&0&1&-6&10\end{array}\right]

Add row 3 to row 2:

\left[\begin{array}{ccccc|c}1&-2&3&2&1&10\\0&0&1&0&2&-3\\0&0&0&1&-6&10\end{array}\right]

Add -3(row 2) to row 1, and add -2(row 3) to row 1:

\left[\begin{array}{ccccc|c}1&-2&0&0&7&-1\\0&0&1&0&2&-3\\0&0&0&1&-6&10\end{array}\right]

7 0
3 years ago
E value of y varies directly with x, and y=8 when x=-32. find y when x=64.
ikadub [295]
Y = kx
8 = -32k
k = -8/32 = -1/4
y = -1/4 (64)
y = -16
6 0
3 years ago
Please help! Thank you.
lbvjy [14]

Answer:

Step-by-step explanation:

es la d

3 0
3 years ago
I need help I don’t understand this
Andrei [34K]

See the explanation

<h2>Explanation:</h2>

Hello! here we need to match the statements on the left-hand side to the reasons on the right-hand-side.

So this is as follows:

Statements:                                                       Reasons:

Segment Addition Postulate                            AB+BC=AC

Substitute the given values                              5x+1+15=7x

Simplify                                                               5x+16=7x

Subtract 5x from both sides                              16=2x

Divide both sides by 2                                       16/2=2x/2

Simplify                                                               AC=7x

Substitute 8 for x                                               AC=7(8)

Simplify                                                               AC=56

So what we did here is to find the measure of segment AC by finding the x-value first. In other words, we have proven that AC = 56 by following logical arguments organized in an structured manner.

<h2>Learn more:</h2>

Two-column proof: brainly.com/question/13338796

#LearnWithBrainly

8 0
3 years ago
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