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Nadya [2.5K]
3 years ago
15

Answer this question…………

Mathematics
2 answers:
Paladinen [302]3 years ago
5 0
The third option is the answer
Korolek [52]3 years ago
5 0
I think it's the 3rd one
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The water reaches a max height when the horizontal distance from the firefighter to the building is approximately __m. Round to
elena-s [515]

The horizontal distance from the firefighter at which the maximum height of water occurs is 10.83m

<u>Explanation:</u>

Given:

h(x) = -0.026x² + 0.563x + 3

where,

h(x) is the height of the water

Initial speed, u = 14m/s

angle, θ = 30°

(a)

Horizontal distance = ?

h(x) = ax² + bx + c

the vertex is found at x = -b/2a

where,

x = distance to the maximum height

As compared to the equation given:

a = -0.026

b = 0.563

Thus,

x = \frac{-0.563}{2 X -0.026} \\\\x = \frac{0.563}{0.052}\\ \\x = 10.83m

Therefore, horizontal distance from the firefighter at which the maximum height of water occurs is 10.83m

3 0
3 years ago
A circle has a circumference of 9 pi meters what is the area of this circle​
Andreas93 [3]

Answer: 63.62 square m.

Step-by-step explanation:

Find the Radius so 9/2= 4.5

Area = π r²

Area 3.14(20.25)

Area equles 63.62

8 0
3 years ago
Could really use some help <br>​
MrRissso [65]
Answer:
X= 114
I don’t know what y is labeling so I won’t be able to help there sorry
5 0
2 years ago
A researcher conducts an experiment comparing two treatment conditions with 20 scores in each treatment condition.
Savatey [412]
To determine the number of subjects that are needed for the experiments, we multiply the number of independent variables with the number of scores. For example, there are n independent variables then, there are approximately,

                                number of subjects = 20 x n = 20n
6 0
2 years ago
Find the scale factor
Mama L [17]

Answer:

C. 50

Step-by-step explanation:

The triangles are proportional and that is why you can find the scale factor. Set up a proportion (equivalent fractions). Set the proportion up with the corresponding sides together on thee top or the bottom of the proportion.

<u>65  </u> = <u>  91</u>

x         70

91x = 65 * 70

<u>91x</u> = <u>4550</u>

91        91

x     =  50

8 0
2 years ago
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