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Dafna1 [17]
3 years ago
15

A racecar driver completes a race 30 laps in 15 minutes at a constant speed. what is the driver's speed?

Mathematics
1 answer:
Nataly [62]3 years ago
8 0

Answer:

200 mph/321 km/h if the track is 1 mile long and 100 mph/160 km/h if the track is 2 miles long

Step-by-step explanation:

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A small tile balcony is shown . Each tile is 9 square inches .what is the area of the shaded section in square inches
DochEvi [55]

The answer to this is D. 180 square inches.

The area formula for rectangles: b*h

The base is 5 tiles.

The height is 4 tiles.

4*5=20.

Since each tile is 9 square inches, 20*9=180.

Hope this helps!

7 0
3 years ago
What is the range of the inverse of the given function? f(x)=√x-2
jarptica [38.1K]

Answer:

all real nunbers

Step-by-step explanation:

when we exchange the place of x and y and solve for y we get the equation y=x^2 + 2

any number inserted in x will give a value y

3 0
3 years ago
Given the equation 6/x=3/k+2, and the constraints x ≠ 0 and k ≠-2, what is x in terms of k?
Veronika [31]

Answer:

A) 2k+4

Step-by-step explanation:

To solve for terms of x, we need to. she sure that x is on its own side while every other term is on the other side.

To start, we will cross multiply. If we have a/b=c/d, then ad=bc

We can perform the same calculation here,

6/x=3/(k+2)

6(k+2)=3x

Divide both sides by 3

2(k+2)=x

x=2k+4

7 0
3 years ago
If each data is increased by a constant K then find it's mean ?? answer fast pleaseeeeeeeeeee​
MArishka [77]

Answer:

The mean is also increased by the constant k.

Step-by-step explanation:

Suppose that we have the set of N elements

{x₁, x₂, x₃, ..., xₙ}

The mean of this set is:

M = (x₁ + x₂ + x₃ + ... + xₙ)/N

Now if we increase each element of our set by a constant K, then our new set is:

{ (x₁ + k), (x₂ + k), ..., (xₙ + k)}

The mean of this set is:

M' = ( (x₁ + k) + (x₂ + k) + ... + (xₙ + k))/N

M' = (x₁ + x₂ + ... + xₙ + N*k)/N

We can rewrite this as:

M' = (x₁ + x₂ + ... + xₙ)/N + (k*N)/N

and  (x₁ + x₂ + ... + xₙ)/N was the original mean, then:

M' = M + (k*N)/N

M' = M + k

Then if we increase all the elements by a constant k, the mean is also increased by the same constant k.

6 0
3 years ago
Multiply. Express your answer in simplest form. 1/8 × 5/6
Gennadij [26K]

Answer:

\frac{5}{48}

Step-by-step explanation:

  1. \frac{1}{8} × \frac{5}{6} = \frac{5}{48}
4 0
3 years ago
Read 2 more answers
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