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Rus_ich [418]
3 years ago
10

If f(x) = 2x + 3 and g(x) = x2-7, find (f+g)(x)

Mathematics
1 answer:
love history [14]3 years ago
3 0
<span>f(x) = 2x + 3
</span><span>g(x) = x²-7

</span>(f+g)(x) = f(x) + g(x) = 2x + 3 + x² - 7 = x² + 2x - 4

(f+g)(x)  =  x² + 2x - 4
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A car travels 360 miles in a period of 180 minutes. Find the average velocity of the car in miles per hour over this time period
Serggg [28]
The simple formula for velocity is v=d/t.  Velocity equals distance divided by time.  360 miles divided by 180 minutes.  360/180=2.  The car travels at 2 miles per MINUTE.

Now, to change to miles per HOUR.  There are 60 minutes in an hour, so 2*60=120 miles per hour.

Answer: 120 mph
4 0
3 years ago
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Find the distance between (-6, -12) and (4,8) using the distance formula.
Romashka [77]

Answer:

The distance formula is 22.360679775

if you round it to the nearest tenth, then the answer is 22.4

Step-by-step explanation:

(-6, -12) and (4,8)

<u>(x2 - x1)² + (y2 - y1)²</u>

Place the x and y values

(4 - - 6)² + (8 - - 12)²

= 10² + 20²

= 100 + 400 = 500

√500 = 22.360679775

Round it to the nearest tenth, and you will get 22.4

Hope this helps!

Please mark me as the brainliest

6 0
1 year ago
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A rectangular field is two times as long as it is wide. If the perimeter of the field is 450 feet, what are the dimensions of th
lys-0071 [83]

Hi There,

----------------------------------------

We Know:

Total Perimeter = 450 feet

Length is 2 times the width.

----------------------------------------

Solution:

Length = 150

Width = 75

75 x 2 = 150

150 + 150 + 75 + 75 = 450

----------------------------------------

Answer:

Length = 150 feet.

Width = 75 feet.

----------------------------------------

Hope This Helps :)

5 0
3 years ago
Evaluate the sum of the finite geometric series.<br> 1+2+4+8+...+128
Wittaler [7]
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3 years ago
What is 9 divided by 4
Harman [31]
2.25
Hope that helps you out
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3 years ago
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