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Len [333]
3 years ago
9

Which of these is an example of driving at an average rate of 20 miles per hour?

Mathematics
1 answer:
dlinn [17]3 years ago
4 0
Driving 40 miles in 2 hours is the answer
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What is the equation of this line in standard form?
Tanya [424]
I believe the answer is 6x-7y=-11
4 0
3 years ago
Read 2 more answers
Mrs. Elizondo runs around a 400-meter track at a constant speed of 250 meter per minute. How many minutes does it take Mrs. Eliz
anastassius [24]

Answer: See explanation

Step-by-step explanation:

From the information, we are told that Mrs. Elizondo runs around a 400-meter track. If she runs 4 laps, the total meters will be:

= 400 × 4

= 1600 meters

Since she uses a constant speed of 250 meter per minute. The number if minutes taken to complete the 4 laps will be gotten by dividing 1600 by 250. This will be:

= 1600 / 250

= 6.4 minutes

= 6 minutes + (0.4 × 60 seconds).

= 6 minutes 24 seconds

3 0
3 years ago
Solve the inequality.<br><br> n−4&lt;5<br> The solution is <br> .
algol [13]

Answer:

Step-by-step explanation:

n - 4 < 5

n < 9

4 0
3 years ago
For this question, use the following functions.
Lubov Fominskaja [6]

Answer:

4x + 18

Step-by-step explanation:

This is called a composite function, meaning passing the range of one function as a domain of another function.

For f(f(x)), the inner-function's range is passed as the domain of the outer function.

We can do so by substitution,

The range of f(x) can be written as 2x + 6 for any defined x values,

So we will substitute 2x  + 6 as the 'x' of another function which is in this case

f(x) again, so it looks like this 2(2x+6) + 6 which can be simplified into

4x + 18

5 0
3 years ago
Y = 3x -1 2x + 4y = 24<br> SOMEONE EXPLAIN IN STEPS PLEASE!!!
Nina [5.8K]

Answer:

(2, 5 )

Step-by-step explanation:

Given the 2 equations

y = 3x - 1 → (1)

2x + 4y = 24 → (2)

Substitute y = 3x - 1 into (2)

2x + 4(3x - 1) = 24 ← distribute and simplify left side

2x + 12x - 4 = 24

14x - 4 = 24 ( add 4 to both sides )

14x = 28 ( divide both sides by 14 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 3(2) - 1 = 6 - 1 = 5

solution is (2, 5 )

8 0
2 years ago
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