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Darina [25.2K]
3 years ago
14

A car that travels 20 miles in LaTeX: \frac{1}{2}1 2 hour at constant speed is traveling at the same speed as a car that travels

30 miles in LaTeX: \frac{3}{4}3 4 hour at a constant speed. Both cars go miles in LaTeX: \frac{1}{4}1 4of an hour (or 15 minutes). Both cars will travel miles in 1 hour.
Mathematics
1 answer:
charle [14.2K]3 years ago
5 0

Answer:

10 miles per 1/4 hour

40 miles per hour

Step-by-step explanation:

Given that:

A car travels 20 miles in 1/2 hour

Miles traveled per hour :

(20 * 2) / 1 = 40 miles per hour

Mile traveled in 1/4 hour :

Distance = speed * time

Distance = 40 mph * 1/4 = 10 miles per 1/4 hour

Car traveling 30 miles in 3/4 hours

(30 * 4) /3 = 120 / 3 = 40 miles per hour

Distance = 40 mph * 1/4 = 10 miles per 1/4 hour

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Answer: 3-i

Let me know if this helps!!!
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Here are some letters and what they represent. All costs are in dollars. m represents the cost of a main dish. n represents the
k0ka [10]

The given question is incomplete

Here are some letters and what they represent. All costs are in dollars.

m represents the cost of a main dish.

n represents the number of side dishes.

s represents the cost of a side dish.

t represents the total cost of a meal.

Discuss with a partner: What does each equation mean in this situation? a. a.  m = 7.50

b. m = s + 4.50

c . ns = 6

d. m + ns = t

2. Write a new equation that could be true in this situation.

Answer:

t = 3m -n(s+1)

Step-by-step explanation:

Using the information we can describe the value of each letters

using a and b

  • we have m = 7.50
  • and  m = s + 4.50

        7.50 = s + 4.50

         s = 3

substitute s in c, we get

  • ns =  6
  • n = 6/3 = 2

using equation d we have

  • m + ns = t
  • 7.50 + 6 = t
  • t = 13.50

so we an equation using the above data

t +ns = 3m - n

t = 3m -n(s+1)

4 0
3 years ago
An equation that is true for certain values of the variables in it is called an identity TRUE OR FALSE
klemol [59]

Answer:

False

Step-by-step explanation:

The answer is true or false

5 0
4 years ago
a bag contains six red balls, six greens balls, five yellow balls and three black balls. A ball is picked at random from the bag
madreJ [45]

Answer:

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5 0
3 years ago
What are the reasons??
Fittoniya [83]

Step-by-step explanation:

1. 3 and 2 are complementary because when you add them up, they give a toral of 90°.

2. As you may tell from the picture, and that they stated it in the question, angles 1 and 2 are added and they give a total of 90°.

3. If we consider that angle 3 is somewhat equal to angle 1, then the statement is true.

4. As I mentioned, if angle 1 and angle 3 are equal, then the statement is also true.

5. It was kind of proven above that angle 1 and angle two are similar, so this is true.

6. Like option 5, this is also the same thing.

I hope it helped!

3 0
4 years ago
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