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Gwar [14]
3 years ago
13

The vertex of this parabola is at (5, 5). when the x-value is 6, they-value is -1. what is the coefficient of the squared expres

sion in the parabola's equation?
Mathematics
2 answers:
svetlana [45]3 years ago
5 0

 

hello :<span>
<span>the parabola's equation is : f(x) = a(x-5)²-5
the coefficient of the squared expression in the parabola's equation is : a
but ; f(6) = - 1
- 1 = a(6-5)²+5
a+5=-1.....a=-6
f(x) = -6(x-5)²+5</span></span>

<span><span>so : a = - 6</span></span>

Makovka662 [10]3 years ago
3 0

Answer:

-6

Step-by-step explanation:


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30 points on this question simply find the volumes of tank a and then find the volume of tank b.
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Answer:

volume of tank a=65.63

volume of tank b=61.88

Step-by-step explanation:

3.5*3.75*5=65.63

3*3.75*5.5=61.88

brainliest plz

7 0
3 years ago
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What’s the correct answer for this ?<br> The traffic light is approximately _____ feet tall
wlad13 [49]

Answer:

Height = 21.78 ft

Step-by-step explanation:

Tan θ = opposite / Adjacent

tan 40 = opposite / 20

where opposite is the part of the traffic light

0.839 × 20 = opposite

opposite = 16.78 ft

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8 0
3 years ago
Michael is using a number line to evaluate the expression –8 – 3.
Yanka [14]

Answer:

Step-by-step explanation:

Michael is using a number line to evaluate the expression -8 - 3. After locating -8 on the number line , Michael could rewrite the expression as -8 + -3 and move 3 spaces to the left.

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8 0
3 years ago
Tickets at a play cost $10 or $14. If 800 tickets were sold and $9,040 was collected by the box office, how many $14 tickets wer
pav-90 [236]
STEP 1:
determine equations needed

x= # of $10 tickets
y= # of $14 tickets

QUANTITY EQUATION
x + y= 800

COST EQUATION
$10x + $14y= $9,040


STEP 2:
multiply quantity equation by -14

-14(x + y)= -14(800)
-14x - 14y= -11,200


STEP 3:
add new quantity equation in step 2 to cost equation of step 1 to solve for x using elimination

-14x - 14y= -11,200
10x + 14y= 9040
y term cancels out

-4x= -2160
divide both sides by -4

x= 540 ten dollar tickets


STEP 4:
substitute x value in step 3 into either original equation

x + y= 800
540 + y= 800
subtract 540 from both sides

y= 260 fourteen dollar tickets


ANSWER: There were 540 $10 tickets and 260 $14 tickets sold.

Hope this helps! :)
5 0
3 years ago
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