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Alborosie
3 years ago
12

Please help. 48 points and the first answer is brainliest!

Mathematics
2 answers:
enyata [817]3 years ago
8 0

Answer:

B)  f(x) =  -16(x - 1.5)² + 40

Step-by-step explanation:

The equation we have is: h(t) = -16x² + 48x + 4

The answers are all in vertex form, so we need to covert this equation into vertex form by completing the square.

Step 1:  factor out -16 from the first 2 terms...

-16(x² - 3x) + 4    

Step 2:  complete the square on this term...

-16(x² - 3x + (3/2)² - (3/2)²)

    -16(x² - 3x + (3/2)²) + 4 + 16(3/2)²

        -16(x - 3/2)² + 4 + 16(9/4)

             -16(x - 1.5)² + 4 + 4(9)

                   -16(x - 1.5)² + 40

So f(x) =  -16(x - 1.5)² + 40

DerKrebs [107]3 years ago
3 0

Answer:

its b i took the test

Step-by-step explanation:

You might be interested in
(d)
mash [69]

Answer: The 4 answers are x=18, x=3, x=48, x=81 1/2.

Step-by-step explanation: Isolate the variable by dividing by each side by factors that don't contain the variable.

6 0
3 years ago
If you receive 20% off a pair of pants that costs 48.00$ what is the discount and final price
LenaWriter [7]

0.2(48)= $9.6 [discount]

48-9.6 = $38.40 [total]

6 0
3 years ago
In the morning, the temperature was 15∘F. During the day, the temperature fell 37 degrees. Which expression shows how to find th
tino4ka555 [31]

Answer:

- 22°F

Step-by-step explanation:

Given that :

Morning temperature = 15°F

Change in temperature = fall by 37 degree

The temperature of the end of the day:

Morning temperature + (change in temperature)

Fall by 37° = decrease in temperature by 37° = - 37°

15°F + (-37°F)

15°F - 37°F

= - 22°F

6 0
3 years ago
What is the value of x in the equation 1/5x – 2/3y = 30, when y = 15?
lianna [129]

Answer:

x = 200

Step-by-step explanation:

1/5x – 2/3y = 30

substitute in y

1/5x - 2/3(15) = 30

multiply

1/5x - 10 = 30

isolate the variable

1/5x = 40

multiply each side by 5

x = 200

4 0
3 years ago
Read 2 more answers
Graph the function and identify the domain and range. y = 0.5x2 A. domain: range: B. domain: range: C. domain: range: D. domain:
vivado [14]
The graph would be a parabola which passes through the origin and opens upwards
The domain is all Real x.

The range is  y >= 0
4 0
3 years ago
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