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EastWind [94]
2 years ago
14

PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!!

Mathematics
1 answer:
Mamont248 [21]2 years ago
3 0

Answer:

option c

Step-by-step explanation:

Quadratic function in vertex form:

y = a(x - h)² + k

Where (h, k) is the vertex

vertex(5 , 12)

y = a(x - 5)² + 12

This passes through (8, 9)

9 = a(8 - 5)²  + 12

9 = a(3)² + 12

9 = 9a + 12

9 - 12 = 9a

9a = -3

a = -3/9

a = -1/2

Answer:\ y = \dfrac{-1}{3}(x - 5)^{2}+12

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Jefferson middle school is selling tickets to a choral performance. On the first day of ticket sells they sold 4 adult tickets a
scoundrel [369]

Answer:

Adult is $12 and child is $7

Step-by-step explanation:

Adult=x and Children=y

first day: 4x+1y=55

second: 3x+2y=50

Get one letter the same but opposite

(4x+1y=55) times that by -2

-8x+-2y=110

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minus all of that u get

-5x=60

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fill in X

3(12)+2y=50

36+2y=50

-36       -36

2y=14

/2    /2

y=7

6 0
3 years ago
There are 5 players on a basketball team. In a game, 4 players scored 6 scored 6 points each. The team scored a total of 34 poin
OLga [1]

Answer:

10 points

Step-by-step explanation:

you do 6 times 4 which is 24 then you do 34 - 24 which is 10 so the rest of the team scored 10 points

8 0
3 years ago
Please help it's due in a few minutes
kow [346]

Answer:

Step-by-step explanation:

7 0
2 years ago
Working as a waiter, Michael earns $7.50 per hour plus tips Last night he received $43.50 in tips and earned a total of $88.50.
vredina [299]

Answer: 6 hours

Step-by-step explanation:

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So your answer is 6 hours

Hope this helped:))

3 0
3 years ago
Use the definition of a derivative to find f’(x).
tatyana61 [14]

Answer:

f'(x) = -\frac{9}{x^2}

Step-by-step explanation:

i) f(x) = 9 / x

ii) f'(x)  = $\lim_{h\to 0} \frac{f(x+h) - f(x)}{h} $  \hspace{0.2cm}

        = $\lim_{h\to 0} \frac{\frac{9}{x+h}  - \frac{9}{x} }{h}  =  \hspace{0.1cm} $\lim_{h\to 0} \frac{9x - 9(x+h)}{hx(x+h)} $ \hspace{0.1cm} =  \hspace{0.1cm}$\lim_{h\to 0} \frac{-9h}{hx(x+h)}  =  $\lim_{h\to 0} \frac{-h}{x(x+h)} = \frac{-9}{x^2}$

7 0
3 years ago
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