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3 years ago

Find all numbers whose absolute value is 7.

Mathematics

1 answer:

suter [353]3 years ago

4 0

Answer:

The absolute value of 7 is 7 and the absolute value of -7 is 7

7, -7

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Combine like terms to simplify (5x+2) + (4x+5)

Gnesinka [82]

(5x+2)+(4x+5) = 9x+7

6 0

3 years ago

Write the equation of the line that passes through the points (2,2) and (3,4)

Scrat [10]

9514 1404 393

Answer:

y -2 = 2(x -2)

Step-by-step explanation:

The slope of the line is given by the slope formula:

m = (y2 -y1)/(x2 -x1)

m = (4 -2)/(3 -2) = 2/1 = 2

The point-slope form of the equation for the line is ...

y -k = m(x -h) . . . . . . line with slope m through point (h, k)

For the first point and the slope we found, the equation is ...

y -2 = 2(x -2)

You can rearrange this to any form you may like.

y -2 = 2x -4 . . . eliminate parentheses

y = 2x -2 . . . . . slope-intercept form

2x -y = 2 . . . . . standard form

8 0

3 years ago

Yen paid $10.50 for 2.5 pounds of pretzels. What price did she pay for each pound of pretzels? Move decimal O $0.42 0 $4.20 Divi

Grace [21]

Answer: The answer is $4.20

Step-by-step explanation:

6 0

3 years ago

suppose that a water fountain produces a stream of water that follows the shape of a parabola. assigning the origin of a coordin

Readme [11.4K]

The quadratic regression equation for the stream of water is $y=-0.139x^{2} +1.667x$ {parabola}

Given that the water stream produced by fountain is parabola

Vertex of parabola is (6,5) , parbola is facing downward,axis of symmetry of parabola is x=6 and parabola passes through (0,0)

according to symmetry the third point on the parabola is (12,0)

General equation for a parabola⇒ Y=-4a $X^{2}$

⇒(y-5)=-4a $(x-6)^{2}$ { as the Vertex of parabola is (6,5) }

⇒(y-5)=-4a( $x^{2} +36-12x$ )

subtituting (0,0) in the equation to get the value of a

⇒-5=-4a(36)

⇒ a= $\frac{-5}{144}$

equation of parabola⇒(y-5)=-4( $\frac{5}{144}$ ) $(x-6)^{2}$

Therefore,The quadratic regression equation for the stream of water is $y=-0.139x^{2} +1.667x$

Learn more about parabola here:

brainly.com/question/21685473

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3 0

2 years ago

Evaluate-a-function f(x) = <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B7%7D" id="TexFormula1" title="\frac{x}{7}" alt="\f

OLga [1]

Step-by-step explanation:

Hey there!

f(x) = 7/x

~ Simply keep the "7" in the place where "x" is there.

$f(7) = \frac{7}{7}$

Therefore, X= 1.

Hope it helps....

3 0

3 years ago

Read 2 more answers