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MrMuchimi
4 years ago
15

Axis of symmetry for f(x) = -2x2 + 20x -42

Mathematics
2 answers:
Ksenya-84 [330]4 years ago
8 0
For the function f(x)=2x^2 +20x-42

We can use the formula for the axis of symetry, which is x= \frac{-b}{2a}

With the values substituted, we get...

\frac{-20}{2(-2)} =5

Therefore the axis of symmetry is x=5 
charle [14.2K]4 years ago
4 0

Answer: X=5

Step-by-step explanation:

i took the test on FLVS

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the formula P = 2l + 2w ives the promoter P of a rectangular room with length l and width w. A rectangular living room is 26 ft
jonny [76]

Answer:

Therefore the Perimeter of the room is 94 ft.

Step-by-step explanation:

Given:

P=2l+2w

Where ,

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To Find:

Perimeter of the room = ?

Solution:

Perimeter of Rectangle is given as

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Substituting 'l' and 'w' we get

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5 0
4 years ago
Which pair of lines are parallel? Need to show work
zaharov [31]

Answer:

E

Step-by-step explanation:

7 0
3 years ago
A decorator adds vases to a mantle to decorate. She wants to use 2 matching green vases, 3 matching blue vases, and 4 matching w
hjlf
There are 2 green, 3 blue, and 4 white vases.
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The total number of arrangements is
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3 0
3 years ago
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What is the common ratio in this geometric series?
Lerok [7]
For a geometric sequence or geometric series, the common ratio is the ratio of a term to the previous term. This ratio is usually indicated by the variable r. Example: The geometric series 3, 6, 12, 24, 48, . . . has common ratio r = 2.
4 0
3 years ago
A student has an average of 78 on seven chapter tests. If the student's scores on six of the tests are 76, 74, 76, 80, 83, and 9
zhenek [66]

Answer:

The score is 66

Step-by-step explanation:

Say the unknown score is x

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78 = (x + 76 + 74 + 76 + 80 + 83 + 91)/7

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546 = x + 480

546 - 480 = x

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4 0
3 years ago
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