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3 years ago

How bad is the heavy traffic? You can walk 15

Mathematics

2 answers:

Butoxors [25]3 years ago

6 0

Answer:

Average rate of car: x+3

Walking rate: x

The equation is

10/15 = x/x+3

x = 6

Average rate of car: 9 mph

Walking rate: 6 mph

Step-by-step explanation:

mash [69]3 years ago

4 0

Answer:

Average rate of car: 9 mph

Walking rate: 6 mph

Step-by-step explanation:

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vfiekz [6]

Answer:

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8 0

4 years ago

The sum of two numbers is 65 and the difference is 13.what are the numbers?

Karolina [17]

Answer: 26 and 39

Step-by-step explanation:

Let the numbers be x and y . Also , let us take x as the larger number.

From the first statement :

x + y = 65 ...................... equation 1

From the second statement :

x - y = 13 ....................... equation 2

Solving the system of linear equation by elimination method. Let us eliminate y first , then we need to add the two equations to eliminate y , the equation then becomes

2x = 78

x =39

substitute x = 39 into equation 1 , that is

39 + y = 65

y = 65 - 39

y = 26

Therefore , the numbers are 26 and 39

3 0

3 years ago

Please help quickly for 5 stars and brainliest!!

alexandr402 [8]

1.
Height h = 240 feet
We insert it into formula.
$240 = -16 t^{2} +128t$
Now we solve this for t:
$16 t^{2} -128t +240 = 0 /16 \\ t^{2} - 8t +15 =0 \\ t_{1} = 5 t_{2} = 3$

We have two answers as the rocket will pass this height on it's way up and down.

2.
Height h = 0 feet
We insert it into formula.
$0=-16 t^{2} +76t + 2$
Now we solve this for t:
$16 t^{2} - 76t -2 = 0 /2 \\ 8t^{2} - 38t - 1 = 0 \\ t_{1} = 5 t_{2} = -1$
We do not consider solution -1 as the time can not be negative. Our solution is 5s.

3.
Height at bottom of hill h = 0 feet
We insert it into formula.
$v^{2} = 64 * 0 = 0 ft/s$

7 0

4 years ago

14 ten thousands<br> + 12 thousands =

vodka [1.7K]

152,000

is the correct answer

6 0

3 years ago

The final cost of a sale item is determined by multiplying the price on the tag by 75%. Which best describes the function that r

Lelechka [254]

Answer:

Option A) is correct.

Step-by-step explanation:

The final cost of a sale item is determined by multiplying the price on the tag by 75%.

So. if the final cost is represented by $F and the price on the tag is $t, then the relation between F and t will be

F = 0.75t.

This relation is linear since the ratio of the change in the final cost compared to the rate of change in the price tag is constant.

Therefore, option A) is correct. (Answer)

5 0

3 years ago

Read 2 more answers