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salantis [7]
3 years ago
6

The distance traveled by a car moving at 30 miles per hour for t hours

Mathematics
1 answer:
Inga [223]3 years ago
8 0
D = t*s
distance = time * speed
d = t*30
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SVEN [57.7K]
If x + y = 6, then solve for y to get: y = 6 - x.

Now replace y with 6 - x in both equations.

(5x)/3 + 6 - x = c

2(6 - x) = c - 4x

The upper equation is solved for c.
Now we solve the lower equation for c.

c = 2(6 - x) + 4x

c = 12 - 2x + 4x

c = 2x + 12

Since we have two equations solved for c, we substitute to get

(5x)/3 + 6 - x = 2x + 12

This is an equation in only x, so we can solve for x.

(5x)/3 - 3x = 6

5x - 9x = 18

-4x = 18

x = -9/2

Now we solve for y.

x + y = 6

-9/2 + y = 6

y = 9/2 + 12/2

y = 21/2

Now we solve for c.

c = (5x)/3 + y

c = (5 * (-9/2))/3 + 21/2

c = -45/6 + 21/2

c = -15/2 + 21/2

c = 6/2

c = 3

Answer: c = 3
7 0
3 years ago
What is 3/4 divided by 1/2
Kisachek [45]

Answer:

0.375

Step-by-step explanation:

8 0
3 years ago
Jonah's and his aunt's houses are 8,750 meters apart. Jonah's walking speed is 5 kilometers per hour. How long will it take him
umka2103 [35]
8750 Meters = 8.75 Kilometers
8.75 Kilometers / 5 Kilometers Per Hour = 1.75 Hours = 1 Hour and 45 Minutes

Hope this helps.
5 0
3 years ago
Kaylee has 1 1/2​ cups of yogurt to make smoothies. Each smoothie uses 1/2​ cup of yogurt. How many smoothies can Kaylee make wi
ANTONII [103]

Answer:

3 smoothies

Step-by-step explanation:

1/2 goes into 1 1/2 3 times

6 0
2 years ago
Read 2 more answers
3x +1 = 4<br> Solve the equation
zmey [24]

Answer:

1=x

Step-by-step explanation:

6 0
3 years ago
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