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sineoko [7]
2 years ago
15

In 3 hours , a car travels 120 miles. What’s is the speed of the car?

Mathematics
2 answers:
atroni [7]2 years ago
7 0
40 because you would divide the miles by hours to find the rate of change. 

120/3= 40
dalvyx [7]2 years ago
6 0
The car is traveling 40 miles per hour. This is because we need to find the unit rate of 120miles in 3 hours. You would just divide 120 by 3 to find it.
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Complete the point-slope equation of the line through (-4,8) and (4,4)
notka56 [123]

Answer:

y-4=(-1/2)(x-4)

Step-by-step explanation:

Slope=(8-4)/(-4-4)=-4/8=-1/2

The equation of the line is y-4=(-1/2)(x-4)

4 0
2 years ago
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12x - 2y = -1<br>+ 4x + 6y= -4<br>​
svp [43]

Answer:

x = -7/40 , y = -11/20

Step-by-step explanation:

Solve the following system:

{12 x - 2 y = -1 | (equation 1)

4 x + 6 y = -4 | (equation 2)

Subtract 1/3 × (equation 1) from equation 2:

{12 x - 2 y = -1 | (equation 1)

0 x+(20 y)/3 = (-11)/3 | (equation 2)

Multiply equation 2 by 3:

{12 x - 2 y = -1 | (equation 1)

0 x+20 y = -11 | (equation 2)

Divide equation 2 by 20:

{12 x - 2 y = -1 | (equation 1)

0 x+y = (-11)/20 | (equation 2)

Add 2 × (equation 2) to equation 1:

{12 x+0 y = (-21)/10 | (equation 1)

0 x+y = -11/20 | (equation 2)

Divide equation 1 by 12:

{x+0 y = (-7)/40 | (equation 1)

0 x+y = -11/20 | (equation 2)

Collect results:

Answer:  {x = -7/40 , y = -11/20

6 0
3 years ago
Brandon has a points card for a movie theater. He receives 70 rewards points just for signing up. He earns 12.5 points for each
MariettaO [177]

Answer:

5 visits

Step-by-step explanation:

70 + 12.5 = 82.5 points

145 - 82.5 = 62.5

62.5 ÷ 12.5 = 5

5 visits.

3 0
3 years ago
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A large restaurant chain wanted to determine if its employees were taking sick days on some days of the week more than others. T
lidiya [134]

Answer:

0.2

Step-by-step explanation:

Given the data :

Day : Mon Tue Wed Thu Fri Sat Sun

# of sick days 22 11 16 17 21 28 25

The expected count of sick days taken on Saturday is obtained thus :

Expected count = (row total * column total) / overall total

Here, the table is just one way :

Hence, we use :

Observed value / total days

Hence,

Expected count on Saturday = sick days on Saturday / total sick days

Expected count on Saturday = 28 / (22+11+16+17+21+28+25)

Expected count on Saturday = 28 / 140

= 0.2

7 0
1 year ago
True or false x - x +0 =0​
Viefleur [7K]
The answer is False. Just googled it
7 0
2 years ago
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