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3 years ago

Expand to write an equivalent expression. −5(7−2)

Mathematics

1 answer:

pogonyaev3 years ago

3 0

-35+10
If correct please mark as Brainly!

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What is the slope of the line shown on the graph?

ziro4ka [17]

Answer:

Step-by-step explanation:

The slope, m, can be determined using any two points, and slope is defined as

m=(y2-y1)/(x2-x1), I’ll use (0,0) and (5,-1)

m=(-1-0)/(5-0)

m=-1/5

4 0

3 years ago

Of the 350 songs D’marco downloaded, 84 songs were free. What percent of the songs did D’marco have to pay for?

maxonik [38]

Answer:

76%

Step-by-step explanation:

84/350 = 24%

That means, 24% of the songs were free and 76% were paid.

7 0

3 years ago

Uh i need help asap lol..

ahrayia [7]

54 degrees because the angles are equal

5 0

3 years ago

Read 2 more answers

At a basketball game, an air cannon launches T-shirts into the crowd. The function y=−1/8x^2 + 4x represents the path of a T-shi

Juliette [100K]

Answer:

The T-shirt lands in the bleachers at a height of 14 feet.

Step-by-step explanation:

The point where they meet is the solution of the simultaneous system of equations:

$y = -\frac{1}{8}x^2+4x$ ...........................................(1)

$3y = 2x - 14$ ..............................................(2)

From (2),

$y = \frac{2}{3}x-\frac{14}{3}$ .................................................(3)

Substituting (3) in (1),

$\frac{2}{3}x-\frac{14}{3} = -\frac{1}{8}x^2+4x$

Multiply through by 24 (the LCM of 3 and 8, the denominators of the fractions)

$(24\times\frac{2}{3}x)-(24\times\frac{14}{3}) = (-24\times \frac{1}{8}x^2)+(24\times4x)$

$16x - 112 = -3x^2+96x$

$3x^2-80x -112 = 0$

$(x-28)(3x+4) = 0$

$x-28 = 0$ OR $3x+4=0$

$x=28$ OR $x = -\frac{4}{3}$

The value of <em>y</em> represents the height.

Substituting for <em>x</em> in (3)

$y = \frac{2}{3}\times28-\frac{14}{3} = \frac{56}{3} - \frac{14}{3} = 14$

$y = \frac{2}{3}\times(-\frac{4}{3})-\frac{14}{3} = -\frac{8}{9} - \frac{14}{3} = -\frac{50}{9}$

We discard the negative answer.

Hence, the T-shirt lands in the bleachers at a height of 14 feet.

6 0

3 years ago

Can anyone please help me with this question

kirill [66]

Would it be negative fourty (-40) as the difference between 20 and -10 is 30 so -10 minus 30 is -40 ?

7 0

3 years ago