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2 years ago

Which expression gives the solutions of -5 + 2x² = -6x?

Mathematics

1 answer:

tino4ka555 [31]2 years ago

7 0

Answer:

1 Regroup terms.

2x²−5=−6x

2 Move all terms to one side.

2x² −5+6x=0

3 Use the Quadratic Formula.

−6+2√19/ 4

−6−2√19 /4

4 Simplify solutions

-3−√19 /2

-3+√19/3

Decimal Form: 0.679449, -3.679449

Step-by-step explanation:

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Heyy pls help! worth 20 points, and please only help if you know the answer. also no links those r kinda annoying lol

iragen [17]

Step 1: Find the slope:

$m= \dfrac{y_2-y_1}{x_2-x_1}= \dfrac{-2-7}{4-(-2)} = \dfrac{-9}{6}= -\dfrac{3}{2}$

This gives you $y=-\dfrac{3}{2}x+b$ , but we need to find b.

To find b, substitute in one (x,y) pair and it doesn't matter which one. I'll go with (4,-2):

$\begin{aligned}-2&=-\dfrac{3}{2}(4)+b\\[0.5em]-2&=-6+b\\[0.5em]4&=b\end{aligned}$

Now take that b-value and plug in into the slope-intercept form:

$y=-\dfrac{3}{2}x+4$

It's always a good idea to toss in the other x-value from the other point, to make sure it checks out.

7 0

3 years ago

Find the measurement

xenn [34]

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$6z + 7 = 8z - 9$

$8z - 9 = 6z + 7$

Add sides 9

$8z - 9 + 9 = 6z + 7 + 9$

$8z = 6z + 16$

Subtract sides 6z

$- 6z + 8z = - 6z + 6z + 16$

$2z = 16$

Divide sides by 2

$\frac{2z}{2} = \frac{16}{2} \\$

$z = 8$

Thus ;

$NP = 8z - 9$

$NP = 8(8) - 9$

$NP = 64 - 9$

$NP = 64 - 4 - 5$

$NP = 60 - 5$

$NP = 55$

Done...

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3 years ago

The manager of the BiLo Supermarket in Mt. Pleasant, Rhode Island, gathered the following information on the number of times a c

pishuonlain [190]

Answer: kindly check explanation

Step-by-step explanation:

Given the data :

5 3 3 1 4 4 5 6 4 2 6 6 6 7 1 1 14 1 2 4 4 4 5 6 3 5 3 4 5 6 8 4 7 6 5 9 11 3 12 4 7 6 5 15 1 1 10 8 9 2 12

Frequency and relative frequency table can be found in the attachment below.

b. Where do the data tend to cluster?

3 up to 6

7 0

3 years ago

What is the simplified form of this expression? (8x − 7) + (-2x − 9) − (4x − 3)

Murljashka [212]

Answer:

The answer to your question is: 2x -13

Step-by-step explanation:

Simplified (8x − 7) + (-2x − 9) − (4x − 3)

8x - 7 - 2x - 9 - 4x + 3

Simplified like terms 8x - 2x - 4x - 7 - 9 + 3

2x -13

4 0

3 years ago

Read 2 more answers

Please please help fast , thank you !

Tresset [83]

Answer:

2>x

y>-1

Step-by-step explanation:

assume y=0 when finding x and vice versa

4 0

3 years ago