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3 years ago

11

faud's model racing care drives an average speed of 3 feet per second. Fuad records the distance and times in a table. At this r

ate, how long will it take the car to travel 21 feet?

1 answer:

vitfil [10]3 years ago

5 0

Answer:

well 3 × 7 = 21

Step-by-step explanation:

1. 0+3=3

2. 3+3=6

3. 6+3=9

4. 9+3=12

5. 12+3=15

6. 15+3=18

7. 18+3=21

So the answer is 7

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Which two pairs of points lie on perpendicular lines?

ohaa [14]

Answer:

a and c

Step-by-step explanation:

Find the slope between each pair of points.

a. m = (16 − 10) / (6 − 3) = 2

b. m = (-3 − -12) / (-5 − -8) = 3

c. m = (3 − 4) / (2 − 0) = -1/2

Perpendicular lines have opposite inverse slopes. So a and c are perpendicular.

6 0

3 years ago

A dollar bill is about 15.5 cm long. If seventeen trillion dollar bills were laid end to end around the Earth's equator, how man

Mariana [72]

Answer:

The dollar bills would encircle earth 65753.1 times

Step-by-step explanation:

We have

Length of dollar bill = 15.5 cm

Total dollar bills = 17 trillion = $17\times 10^{12}$

Thus the length of 17 trillion dollar bills equals

$15.5\times 17\times 10^{12}cm\\\\=263.5\times 10^{12}cm\\\\=\frac{263.5\times 10^{12}}{10^{5}}km\\\\=263.5\times 10^{7}km$

Now taking shape of earth as a perfect sphere the circumference of earth becomes

$C=2\pi r\\\\=2\times \pi \times 6378km\\\\=40074.1558km$

Thus the number of times the dollar bills would encircle earth equals

$\frac{263.5\times 10^{7}km}{40074.1558km}=65753.21times$

6 0

3 years ago

Can someone answer this question, and give me the work?

ladessa [460]

This is the expression
$30x - 40$

good luck

5 0

3 years ago

What is the answer(10+66-4to the power of 2)÷(3+3)in order of operations

nexus9112 [7]

66+10 would equal 77. 77 subtracted by 4 equals73 73 squared equals 5329. 5329 divided by 6 is 888.166667

7 0

3 years ago

Read 2 more answers

What is the slope of a line that is perpendicular to the line y= 1/3 x - 2

drek231 [11]

Answer:

slope = - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{1}{3}$ x - 2 ← is in slope- intercept form

with slope m = $\frac{1}{3}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{1}{3} }$ = - 3

4 0

3 years ago