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jekas [21]
3 years ago
7

F(-3) = 2x^2 + 2 - how do i solve

Mathematics
1 answer:
irakobra [83]3 years ago
7 0

Answer:

20

Step-by-step explanation:

f(x)=2x^{2} +2\\f(-3)=2(-3)^{2} +2\\f(-3)=2(9)+2 = 18 + 2 = 20

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Martina walked 3/4 of a mile in 3/5 of an hour. at this rate how far can martina walk in one hour?
babunello [35]
Find the reciprocal of 3/5 (by flipping the fraction)

5/3

Multiply 5/3 by 3/4

3/4(5/3)= 15/12= 1 1/4

Martina can walk 1 1/4 miles in one hour.

Hope this helps!
8 0
4 years ago
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The record time for running the Boston Marathon is 2.12 hours at an average speed of 12.5 miles per hour. What distance does the
Elena-2011 [213]

Answer:

26.5 \ miles

Step-by-step explanation:

Given: Times for running Boston Marathon= 2.12\ h

           Speed= 12.5 \ mph

Now, finding the distance covered in Boston Marathon.

Distance covered= Speed \times times

Distance covered = 12.5 \times 2.12 = 26.5 \ miles

∴ Distance covered in the Boston Marathon is 26.5 \ miles

3 0
4 years ago
-8 x (-8) Please help
emmasim [6.3K]
The answer to this is 64
6 0
4 years ago
The first train leaves the station at 6:15 a m. The second train leaves at 6:55 am. How much does the sec ond train leave the st
Alekssandra [29.7K]

Answer: 40

Step-by-step explanation:

second train leaves 40 minutes after

7 0
3 years ago
Which function is increasing and has a constant slope?
ratelena [41]

We need to find the increasing function with constant slope.

Let us check each option one by one.

A) 6x -5y =10.

Let us solve it for y to get slope-intercept form

6x-5y =10.

-5y =-6x +10.

y =6/5 x-2.

<em>Slope is 6/5 positive, therefore, it's an increasing function.</em>

<em>A linear function always has a constant slope.</em>

<h3>Therefore, correct option is option A.</h3><h3>A. 6x -5y =10</h3>

All other options are incorrect.

5 0
4 years ago
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