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1 year ago

What is the value of 7(10 - 2^3) + 8 divided by 2

Mathematics

1 answer:

Zielflug [23.3K]1 year ago

5 0

$7(10-2^3)+8 \div 2 \\ \\ 7(10-8)+8 \div 2 \\ \\ 7(2)+8 \div 2 \\ \\ 7(2)+4 \\ \\ 14+4 \\ \\ \boxed{18}$

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steve reads 20 pages of his graphic novel per hour . if the book has 200 pages and he reads for d hours , which expression shows

PolarNik [594]

The answer would be D. 200 - 20d.

This is because the question asks for pages left after reading for "d" (however many) hours. Since the book has 200 books, you'd subtract from that number since it's the "starting number" of pages. If he reads 20 pages per hour, you would multiply those together to get how many he has read, then subtract that number from 200, to get the amount of pages left.

I hope this helps!

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3 years ago

Quadrilateral RJFT is similar to quadrilateral SYPA . JF=60 mm , AP=40 mm , and YP=25 mm . What is TF ?

Hoochie [10]

The two quadrilaterals are similar. Which means the ratios of respective sides of two quadrilaterals will be the same.

So, for the given quadrilaterals, ratio of sides JF and TF of quadrilateral RJFT will be equal to the ratio of sides YP and AP of quadrilateral SYPA. Mathematically, we can write:

$JF:TF = YP:AP \\ \\ 
 \frac{JF}{TF} = \frac{YP}{AP} \\ \\ 
 \frac{60}{TF} = \frac{25}{40} \\ \\ 
60* \frac{40}{25}=TF \\ \\ 
TF=96mm$

So the measure of TF will be 96mm

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2 years ago

Write an equation in slope-intercept form for the line that has a slope of -4/5 and passes through (0, 7).

patriot [66]

Answer:

A. y = $-\frac{4}{5}$ x + 7

Step-by-step explanation:

Slope intercept form is y = mx + b where m is the slope and b is the y-intercept

It gives us the slope, so we can plug that in: y = $-\frac{4}{5}$ x + b

Next, it gives us a point, so we can plug in the x and y into our equation and solve for b when (x, y)

y = $-\frac{4}{5}$ x + b

7 = $-\frac{4}{5}$ (0) + b

7 = b

Last, complete our equation:

y = $-\frac{4}{5}$ x + b

y = $-\frac{4}{5}$ x + 7

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2 years ago

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LuckyWell [14K]

Answer:

solve the inequality /2x-1/≥3

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1 year ago

Write the equation of the line in slope-intercept form using y=mx+b

victus00 [196]

The slope is given as m = 7m=7 and the yy-intercept as b = - \,4b=−4. Substituting into the slope-intercept formula y = mx + by=mx+b, we have

since m=7 and b=-4, we can substitute that into the slope-intercept form of a line to get y=mx+b → y=7x-4

The slope is positive thus the line is increasing or rising from left to right, but passing through the yy-axis at point \left( {0, - \,4} \right)(0,−4).

Step-by-step explanation:

6 0

2 years ago

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