3 years ago

Can someone solve this by using the square method? Be sure to show work please!

Mathematics

1 answer:

Paul [167]3 years ago

5 0

Use the formula (b/2)^2 in order to create a new term. Solve for x by using this term to complete the square.

x = 1 ± $\frac{\sqrt{6} }{2}$

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Given: 2x^2+3x-5, g(x)=x+9. Find: (fg)(3)

Svetradugi [14.3K]

Answer:

264

Step-by-step explanation:

$f(x)=2x^2+3x-5$

$g(x)=x+9$

$(fg)(x)=f(x) \times g(x)$

$\implies (fg)(x)=(2x^2+3x-5)(x+9)$

$(fg)(3)=(2(3)^2+3(3)-5)(3+9)$

$\implies (fg)(3)=22 \times 12$

$\implies (fg)(3)=264$

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2 years ago

How to div602÷3 device

PolarNik [594]

This is my work. the answer would be 200 2/3.

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3 years ago

If a square has a side of 4', what would the area be?<br>A= s2=sxs<br>A= 42= 4'x4<br>A= 16 sq. ft.

statuscvo [17]

Answer:

16 sqft.

Step-by-step explanation:

A=L(W)

A=4(4)

A=16

Hope that helps

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2 years ago

Shelly biked 21 miles in 4 hours. What is Shelly average speed in miles per hour

Maksim231197 [3]

To solve this, you would divide the miles by the number of hours, 21 / 4
21 divided by 4 equals 5.25

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2 years ago

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A hiker walked 12.8 miles from 9:00 am to noon. He walked an additional 17.2 miles from 1:00 pm. What is his average rate for th

Inessa [10]

3 miles per hour. Theres 4 hours between 9 am and 12 and another 6 from 1to 6.so ten hours. then 12.8 plus 17.8 thats 30 then 30 divided by ten is 3 miles per hour. Your welcome :)

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3 years ago

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