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allsm [11]
3 years ago
14

Jenny is taking a vacation from Florida. She travels 70 kilometers per hour for 2 hours, and 63 kilometers per hour for 5 hours.

Over the 7 hours time period what was Jenny's average speed?​
Mathematics
1 answer:
crimeas [40]3 years ago
3 0

Answer: 65 kmh

Step-by-step explanation:

70 kmh for 2 hours = 140 km.

63 kmh for 5 hours = 315 km

140 + 315 = 455/7 total hours = 65 kmh

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Write the point-slope form of a lime that passes through (6,1) with a slope of 2
polet [3.4K]

The point-slope form:

y-y_1=m(x-x_1)

m - slope

We have the slope m = 2 and the point (6, 1). Substitute:

\boxed{y-1=2(x-6)}

5 0
3 years ago
The ratio of boys to girls in a class is 5:4. There are 36 students in the class. How many
Law Incorporation [45]

Answer:

16 students are girls.

Step-by-step explanation:

5:4=36

5x+4x=36

9x=36

x=4.

So we can multiply the ratio by 4.

4(5+4)

20+16.

Since girls is 4, there are 16 girls.

Hope this helps plz hit the crown :D

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!
ioda

Answer:

y=-13

Step-by-step explanation:

We have:

y=x-4

And we want to solve for y when x is -9.

So, substitute -9 for x and evaluate:

y=(-9)-4=-13

Hence, when x is -9, y is -13.

6 0
3 years ago
Easy 6th grade math! Please help!
Pie

Answer:

Step-by-step explanation 10 + 2.50d = 850

David starts with $10 and each day he earns $2.50. The d represents a variable and can be any number.

To find d you must solve the equation.

10 + 2.50d = 850

2.50d = 840 (subtract 10 from 850)

d = 336 (divide 840 by 2.50)

It will take David 336 days to save $850.

3 0
4 years ago
ben is 20 years older then daniel. ben and daniel first met two years ago. Three years ago ben was three times as old as daniel.
allsm [11]

Answer: Daniel is 13 years old; Ben is 33 years old

Step-by-step explanation:

Math

7 0
3 years ago
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