3 years ago

Which table shows a proportional relationship between x and y?

Mathematics

1 answer:

omeli [17]3 years ago

7 0

Answer:

Step-by-step explanation:

x = 2y

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What is -3x^2-4x-4=0

ss7ja [257]

Answer:

<h2>no real solution</h2>

Step-by-step explanation:

$-3x^2-4x-4=0\qquad\text{change the signs}\\\\3x^2+4x+4=0\\\\\text{use the quadratic formula:}\\\\\text{for}\ ax^2+bx+c=0\\\\\text{if}\ b^2-4ac0,\ \text{then an equation has two solutions:}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{We have}\ a=3,\ b=4,\ c=4.\\\\\text{Substitute:}\\\\b^2-4ac=4^2-4(3)(4)=16-48=-32$

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3 years ago

Find the slope from the table:

Aleonysh [2.5K]

Answer:

B! $\frac{-5}{3}$

Step-by-step explanation:

Because 10 minus 5 (from the y column) is -5. And -5 - (-2) is +3. So you get -5 over 3 ( $\frac{-5}{3}$ ). which is B!

Can you give me brainliest please?? :)

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2 years ago

The shoes that Sofia wanted to buy at the mall were marked down from $30 to $24. What is the percentage of discount?

Nataliya [291]

30-24=6
6/30=1/5 aka 20%

The answer is 20%

Hope this helps.

8 0

3 years ago

What is the value of x in x2-3x=28

charle [14.2K]

Answer:

x=-28

Step-by-step explanation:

2x-3x=-1x so if -1x=28 divide both sides by -1 so x= -28

5 0

3 years ago

2. What is the slope passing through the points (2, -1) and (-4, 11)

algol [13]

Answer:

I believe it is y equals 3 minus 2x.

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3 years ago