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Liono4ka [1.6K]
4 years ago
13

SoMEONE PLEASE HELP ME HURRY!!!

Mathematics
1 answer:
olchik [2.2K]4 years ago
5 0
Answer is D
b - 1/5

hope it helps
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HELP ASAP<br> PLZ ITS URGENT
Radda [10]

Answer:

It landed at a height of 14 feet

Step-by-step explanation:

Given

y = -\frac{1}{8}x^2 +4x --- Path of a t-shirt

3y = 2x - 14 --- height of bleachers

Required

Height when t-shirts land in bleachers

3y = 2x - 14

Make y the subject

y = \frac{2}{3}x - \frac{14}{3}

Substitute y = \frac{2}{3}x - \frac{14}{3} in  y = -\frac{1}{8}x^2 +4x

\frac{2}{3}x - \frac{14}{3} =  -\frac{1}{8}x^2 +4x

Multiply through by 24

16x- 112 = -3x^2 +96x

Express as:

3x^2 + 16x  -96x- 112 = 0

3x^2 -80x- 112 = 0

Using a calculator:

x = 28 or x = -\frac{4}{3}

x can not be negative:

So:

x = 28

Substitute x = 28 in y = -\frac{1}{8}x^2 +4x to calculate the height it landed

y = -\frac{1}{8} * 28^2 + 4 * 28

y = 14

8 0
3 years ago
Question 3 of 6 (1 point)
Hatshy [7]

Answer:

Null hypothesis: H₀: ∪ = ≤ 393 pounds

Alternative hpothesis Hₐ: ∪ > 393 pounds

Step-by-step explanation:

The null hypothesis in this case is

Null hypothesis: H₀: ∪ = ≤ 393 pounds

Agriculture Scientists wish to test against this claim believing that the new fertilizer may increase the yield, thus the alternative hypothesis will be

Alternative hpothesis Hₐ: ∪ > 393 pounds.

4 0
3 years ago
What is the factored form of the following expression?
S_A_V [24]
D. (d-9)(d-5)

Since they are both negative, they will multiply to a positive number (45) and add to a negative number (-14)
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Yup I found that the surface area is very brown
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Bob went to the store and bought 10 apples if each apple was 5 dollars how much is the total cost
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$50 was the price of the apples from the store
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