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3 years ago

8

Jackson has let out 50 meter of kite string when he observes that his kite is directly above a point on the ground 30 meters awa

y from him, how high is the kite?

2 answers:

GREYUIT [131]3 years ago

7 0

Answer:

The answer it's 80 meters hopes this help!

Step-by-step explanation:

Sergio039 [100]3 years ago

6 0

50+30 is 80 meters

50-30=20 meters

Since it’s away from him the answer would be one or the other

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The table of values shows the height of a car of a Ferris wheel as it travels in a circular motion. Which statements are true? S

Mashutka [201]

Answer:

The true statements are;

The car makes one complete revolution in 12 s

The radius of the Ferris wheel is 25 yd

Step-by-step explanation:

The values of the table of the given Ferris wheel are presented here as follows;

$\begin{array}{cc}Time \ (seconds) &Height \ (yards)\\0&30\\3&55\\6&30\\9&5\\12&30\\15&55\\18&30\\21&5\\24&30\end{array}$

From the table, we have;

The time it takes the Ferris wheel to complete a motion round from a height of 30 yards and back to 30 yards which is one revolution = 12 s

∴ The time it takes the car to complete one revolution = 12 s

The maximum height of the Ferris wheel = 55 yards

The lowest height of the Ferris wheel = 5 yards

The time at which the Ferris wheel is at the lowest height = 9 s, and 21 s

If the car is loaded at 0 s, then people are loaded above the lowest height of the Ferris wheel

The diameter of the Ferris wheel = The maximum height of the Ferris wheel - The minimum height of the Ferris wheel

∴ The diameter of the Ferris wheel = 55 yards - 5 yards = 50 yards

The radius of the Ferris wheel, R = 1/2 × The diameter of the Ferris wheel

∴ The radius of the Ferris wheel, R = 1/2 × 50 yards = 25 yards

Therefore, the true statements are;

The car makes one complete revolution in 12 s

The radius of the Ferris wheel is 25 yd.

5 0

3 years ago

Express 0.00078456 in scientific notation

Annette [7]

7.8456 x 10^(-4)

this means you move the decimal place to the left 4 places to get the actual value

5 0

3 years ago

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Extra questions for chapter 13 and 14 maths ch-13- surface area and volume and ch-14- statistics

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3 years ago

PQ is a diameter of a circle with centre If angle PQR=55 ,SPR=25 and angle PQM=50

tigry1 [53]

Answer:

m∠QPR = 35° m∠QPM =40° m∠PRS = 30°

Step-by-step explanation:

ΔPRQ is a right triangle with right angle at R. So m∠QPR = 90 - 55 = 35

ΔQPM is a right triangle with right angle at M. So m∠QPM = 90 - 40 = 40

Arc RQ = 2(35) = 70 and arc SR = 2(25) = 50.

So arc PS = 180 - (arc RQ + arc SR) = 180 - (70 + 50) = 180 - 120 = 60

Now arc PS is the intercepted arc for ∠PRS.

Therefore, m∠PRS = 60/2 = 30

I used the fact that an inscribed angle has a measure 1/2 the measure of the intercepted arc several times. Also, I used the fact that the acute angles of a right triangle are complementary. And, finally I used the fact that an inscribed angle in a semicircle is a right angle.

I hope this helped.

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3 years ago

An elevator at a department store must carry fewer than 17 people at a time. An elevator operator is present in the elevator at

natulia [17]

I'd say it's x + 1 < 17.
Because the operator should be included as a person as well.

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4 years ago

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