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aliina [53]
3 years ago
7

Help for the two questions shown, please!

Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

5) 140.8m^2   6) 360in^2

Step-by-step explanation:

5.

6.4 x 6.4 = 40.96

(7.8 x 6.4) ÷ 2 = 24.96

24.96 x 4 = 99.84

99.84 + 40.96 = 140.8m^2

6.

12 x 10 = 120in

13 x 10 = 130in

5 x 10 = 50in

(12 x 5) ÷ 2 = 30in

30 x 2 = 60in

60 + 50 + 130 + 120 = 360in^2

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With work please!!!<br><br> f(x) = -x^4 + 5x - 4x^2<br><br> (f (2))^2
marishachu [46]

Answer: 484

===============================================

Work Shown:

First let's compute f(2). We replace every x with 2 and then use PEMDAS to simplify

f(x) = -x^4 + 5x - 4x^2

f(2) = -(2)^4 + 5(2) - 4(2)^2

f(2) = -16 + 5(2) - 4(4)

f(2) = -16 + 10 - 16

f(2) = -6 - 16

f(2) = -22

Then we square this result to find the value of [ f(2) ]^2

f(2) = -22\\\\\left[ f(2) \right]^2 = [ -22 ]^2\\\\\left[ f(2) \right]^2 = 484

6 0
4 years ago
Write two polynomials with a difference of 2x2 + x + 3
Anettt [7]

Answer:

The two polynomial CAN be 5x^4+5x^3+8x^2+x+6 and 5x^4+5x^3+8x^2+2x+13.

Step-by-step explanation:

Step 1: <u>Simplify the expression:</u>

2*2 + x + 3

4+x+3

x+7

Step 2: <u>Think of a random polynomial:</u>

5x^4+5x^3+8x^2+x+6

Step 3: <u>Either add your "random polynomial" by </u>x+7<u> or subtract it.</u>

<u>I want to add it so...</u>

5x^4+5x^3+8x^2+x+6+x+7

= 5x^4+5x^3+8x^2+2x+13

 Check by subtracting  5x^4+5x^3+8x^2+x+6 and 5x^4+5x^3+8x^2+2x+13.

         5x^4+5x^3+8x^2+2x+13

   -      5x^4+5x^3+8x^2+x+6

        _____________________

         0x^4 - 0x^3 -0x^2 +x +7 <em><u>or  </u></em>x+7<em><u /></em>

         

5 0
4 years ago
PLEASE HELP ME!!!!!!!!!!!!!!!
Pachacha [2.7K]

Answer:

15 degrees

Step-by-step explanation:

angle a= (180-90)/2=90/2=45 degrees

angle QRP = 60

Angle b = 60-45=15 degrees

8 0
3 years ago
What are the coordinates of Point X?<br> A. (3, –4)<br> B. (–3, –4)<br> C. (4, –3)<br> D. (4, 3)
Greeley [361]

Answer:

3, -4

Step-by-step explanation:

Hi I really hope this helps you, Please mark as brainliest!

8 0
3 years ago
Read 2 more answers
Drag the missing statements and reasons to the correct spot to complete the proof
sladkih [1.3K]

Answer:

AD~CB or ABD~BCD OR AB~CD

3 0
3 years ago
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