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Mamont248 [21]
2 years ago
12

in a survey, 250 adults and children were asked whether they know how to swim. the surgery data are shown in the relative freque

ncy tqable

Mathematics
1 answer:
Nadusha1986 [10]2 years ago
7 0

Answer: D

Step-by-step explanation:

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How would you solve
harkovskaia [24]

4r^-3 * 2r^2 =

4*(2r^(-3+2))

= 4*2r^-1

= 4*2(1/r)

= 4*(2/r)

=8/r

4 0
3 years ago
Plzzz helpppppp!!!!!!
Tema [17]

Answer:

(c) h(3) = 1

Step-by-step explanation:

Given

The attached graph

Required

Find h(3)

The formula to use in solving this is:

y = h(x)

Substitute 3 for x

y = h(3)

From the attached graph, the value od x = 3 points to the value of y = 1.

So, we have:

y = 1

5 0
2 years ago
Alex is creating an outdoor structure out of two 12 foot boards. The boards must have an angle of elevation
Whitepunk [10]

Answer:

5.0 ft - 5.6 ft

Step-by-step explanation:

Given that the structure is to be made using two 12 foot boards, then we expect the total perimeter to be equal to (2*12)= 24 ft.

Using the angle of elevation, 40° and the width of 8 ft then you can apply the formula for tangent of a triangle where ;

Tan α = opposite side length/adjacent length

Tan 40°= h/8

h= 8 tan 40° = 6.71 ft

Applying the cosine of an angle formula to find the length of the sliding side

Cosine β = adjacent length /hypotenuse

Cosine 40°= 8/ sliding side length

sliding side length = 8/cosine 40° =10.44 ft

Checking  the perimeter = 10.44 +8+6.71= 25.15 ft

This is more than the total lengths of the boards, so you need to adjust the height as;

24 - 18.44 = 5.56 ft ,thus the height should be less or equal to 5.56 ft

h≤ 5.6 ft

6 0
3 years ago
I just need help :))
rosijanka [135]
U will take the two diagrams
And name them A N B
U then solve the triangle by triangle
6 0
2 years ago
Read 2 more answers
Which angle is a reflex angle? A. An angle measuring 105 . An angle measuring 185 degrees . An angle measuring 65 D. An angle me
son4ous [18]

Answer:

an angle greater than 180° and less than 360°.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
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