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katrin2010 [14]
3 years ago
14

Which of these is the standard form of the following function?

Mathematics
2 answers:
Nady [450]3 years ago
4 0

Answer:

A

Step-by-step explanation:

Given

f(x) = - 9(x + 5)² + 4 ← expand parenthesis using FOIL

     = - 9(x² + 10x + 25) + 4 ← distribute parenthesis by - 9

     = - 9x² - 90x - 225 + 4 ← collect like terms

     = - 9x² - 90x - 221 ← in standard form

lord [1]3 years ago
4 0

Answer: Bro write the question better

Step-by-step explanation:

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Answer:

hi

Step-by-step explanation:

8 0
3 years ago
Solve the system of equations
Brums [2.3K]
5x+4y = 73
-4x + 4y = -8

5x + 4y -(-4x+4y) = 73 -(-8)
5x + 4y + 4x - 4y = 81
5x + 4x + 4y - 4y = 81
9x = 81
x = 81÷9
x = 9

Substitute x = 9 into any of the equations to find y.

5(9) + 4y = 73
45 + 4y = 73
4y = 73 - 45
4y = 28
y = 28÷4
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Answers :
x = 9
y = 7
8 0
3 years ago
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kkurt [141]

Answer:

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Step-by-step explanation:

81 divided by 5

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8 0
3 years ago
The polynomial equation x3+x2=-9x-9 has complex roots +-3i . What is the other root? Use a graphing calculator and a system of e
tresset_1 [31]
If the equation has roots of +-3i. The equation would be,
                                (x + 3i)(x - 3i) 
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8 0
3 years ago
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A triangle has one measuring 3x degree. A second angle measures 2x + 20 degrees and the third angle measure 4x - 20 degrees. Wha
Bingel [31]

Answer:

A triangle is a total of 180 degrees

So to find what x equals we are going to add up all the degree measurements and make them equal to 180

3x+2x+20+4x-20=180 (combine any like terms on the left)

3x+2x+4x+20-20=180 (3x+2x+4x=9x, 20-20=0)

9x=180 (divide both sides by 9)

x=20

Hope this helps ;)

Step-by-step explanation:

3 0
3 years ago
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