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mars1129 [50]
3 years ago
8

If a car travels 400m in 20 seconds how fast is it going

Mathematics
1 answer:
Burka [1]3 years ago
5 0

Answer:

20 m/s

Step-by-step explanation:

Distance = rate * time

400 m = rate * 20 seconds

Divide each side by 20 seconds

400m/ 20 seconds = rate

20 m/second = rate

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jaime bought a jar of 50 vitamins. his two children each take one vitamin each day. the number of vitamins left in the jar after
Reil [10]

Answer:


Step-by-step explanation:

f(x) = 50 - 2x

x = 0  when the vitamins are bought and none have been taken 9 that is day 0).

So the intercept on the y axis  50 - 2(0) = 50 represents this situation ( day = 0 and number of vitamins = 50).

When all the vitamins have been taken f(x) = 0   so we have

50 - 2(25) = 0  This is the intercept on the x axis ( x = 25 days).

5 0
3 years ago
What is the sum of the 14th square number and the 6th square number?
son4ous [18]
14th square number = 196

6th square number = 36
5 0
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Which of these is a set of inputs and outputs for the function f(x) = 2x + 4?
Fed [463]

Answer:

D

Step-by-step explanation:

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6 0
3 years ago
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WILL GIVE BRAINLIST
borishaifa [10]

Answer:

option: C is correct.

Step-by-step explanation:

since, we are given a parent function f(x) as: f(x)=x.

We are asked to find what  change will occur in the function when the parent function f(x) is replaced by f(9x).

let g(x) be the function formed by replacing f(x) with f(9x) i.e.

g(x)=f(9x)=9x.

clearly the slope of the function g(x)=f(9x) is 9.  ( since on comparing the equation with the slope intercept form y=mx+c; where m is the slope of the line and c is the y- intercept).

whereas the slope of the function f(x)=x is 1.

Hence there is an increment of slope by a factor of 9.

Hence, option C is correct.

6 0
3 years ago
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cricket20 [7]

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