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2 years ago

You spin the spinner and flip a coin. Find the probability of the compound event.

Mathematics

1 answer:

Nitella [24]2 years ago

5 0

Answer:

1/10

Step-by-step explanation:

The probability of flipping heads is 1 out of 2 or 1/2

The probability of getting a 5 on the spinner is 1/5

The probability of getting both is 1/2 * 1/5 = 1/10

You should try this out by listing all the ways this can happen.

Spinner Coin

1 H

2 H

3 H

4 H

5 H

1 T

2 T

3 T

4 T

5 T

There are 10 ways of this problem giving results. Only 1 of them is correct.

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Submit Test 20 Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used Drag the numbers to match e

lesya [120]

Answer: i don’t know I just really need need points soory for wasting your time

Step-by-step explanation. i don’t know I just really need need points soory for wasting your time

4 0

3 years ago

Explain how the diagram can help find the area of a circle

anastassius [24]

Answer:

Step-by-step explanation:

This is a really famous diagram! The circle has been divided into many wedges (think slices of pizza!). The wedges have been colored alternately blue and yellow, then the wedges were rearranged to form a "rectangle" -- well, it's approximately a rectangle because the wedges have arcs (pieces of a circle) on them. See how the bottom and top edges of the rectangle look bumpy?

The area of the "rectangle" is approximately $\pi r^2$ . The reason is that the height of the rectangle is r , the radius of the circle. And the length of the rectangle is about $\pi r$ -- half the circumference of the circle. It's half because the circumference is in the bumpy parts of the wedges--half blue, half yellow.

The approximation improves as the number of wedges increases. In fact, as the number of slices (sorry, pizza again) gets larger, the length of the rectangle gets closer and closer to half the circumference. In other words, making more wedges makes the rectangle less bumpy!

3 0

2 years ago

Two trains leave New York at the same time heading in opposite directions. Train A travels at 4 5 the speed of train one. After

vladimir2022 [97]

Answer:

Speed of train A is 44 miles/hr.

Step-by-step explanation:

Let the speed of train A = $u\ miles/hr$

Let the speed of train one = $v\ miles/hr$

Train A travels at $\frac{4}{5}^{th}$ the speed of train one.

i.e.

$u = \dfrac{4}{5}v \\\Rightarrow v =\dfrac{5}{4}u.... (1)$

Distance traveled = 693 miles

Time taken = 7 hours

They are travelling in opposite directions so the resultant speed will appear to be faster.

Relative speed = $u+v\ miles/hr$

The trains are 693 miles apart in 7 hours that means they have traveled a total distance of 693 miles in 7 hours with a speed of ( $u+v$ ) miles/hr.

Using the formula:

$Speed = \dfrac{Distance}{Time}$

$u+v = \dfrac{693}{7}\\\Rightarrow u+v=99 ...... (2)$

Putting the value of v using equation (1):

$\dfrac{5}4u+u=99\\\Rightarrow 5u+4u = 99 \times 4\\\Rightarrow 9 u = 99 \times 4\\\Rightarrow u = 11 \times 4 = \bold{44\ miles/hr}$

Speed of train A is 44 miles/hr.

7 0

3 years ago

A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 29 ft/s. Its height

Ilia_Sergeevich [38]

Answer:

$\overline{v}_{@\Delta t=0.01s}=-15.22ft/s, \overline{v}_{@\Delta t=0.005s}=-15.11ft/s, \overline{v}_{@\Delta t=0.002s}=-15.044ft/s, \overline{v}_{@\Delta t=0.001s}=-15.022ft/s$

Step-by-step explanation:

Now, in order to solve this problem, we need to use the average velocity formula:

$\overline{v}=\frac{y_{f}-y_{0}}{t_{f}-t_{0}}$

From this point on, you have two possibilities, either you find each individual $y_{f}, y_{0}, t_{f}, t_{0}$ and input them into the formula, or you find a formula you can use to directly input the change of times. I'll take the second approach.