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4 years ago

Madelynne hopped 12 times in 15 seconds.What is her speed in hops per minute?

1 answer:

7 0

60 seconds = 1 minute
60/15 = 4

12 hops in 15 seconds is the same as

4 * 12 hops in 4 * 15 seconds, or

48 hops in 60 seconds, and since 60 sec = 1 min, it equals

48 hops per minute.

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What is the slope of the line that passes through the points (-9,10) and (21,15)

Nata [24]

15- 10 divided by 21- -9 should give you your slope

5 0

3 years ago

Read 2 more answers

One edge of a cube measures 5.4 meters. What is the volume of the cube?

matrenka [14]

<span>157.464m^3</span>

This is because using the formula, a^3, you get 5.4^3 which equals 157.464.

5 0

3 years ago

There is a 60% chance of rain on Saturday and a 20% chance of rain on Sunday. Assume that the event that it rains on Saturday is

Vsevolod [243]

Answer:

$0.56$

Step-by-step explanation:

GIVEN: There is a $60\%$ chance of rain on Saturday and a $20\%$ chance of rain on Sunday. Assume that the event that it rains on Saturday is independent of the event that it rains on Sunday.

TO FIND: What is the probability that it rains on exactly one day over the weekend.

SOLUTION:

Probability of rain on Saturday $P(A)=0.6$

Probability of not raining on Saturday $P(A^{'}) =1-0.6=0.4$

Probability of rain on Sunday $P(B)=0.2$

Probability of not raining on Saturday $P(B^{'})=1-0.2=0.8$

Probability of raining exactly one day over the weekend

$=\text{Probability it rains only on Saturday}+\text{Probability it rains only on Sunday}$

$=P(A)\times P(B^{'})+P(B)\times P(A^{'})$

$=0.6\times0.8+0.2\times0.4$

$=0.56$

Hence probability of raining exactly only one day over the weekend is $0.56$

5 0

4 years ago

The figure shows a circle within a square. Find the circumference of the circle let π = 3.14. <br>

Andru [333]

The side of the square = 16 in

When a circle is inscribed in a square, the length of each side of the square is equal to the diameter of the circle.

So, the diameter of the circle is equal to 16 in => radius = 8 in

Circumference = 2πr = 2π8 = 16π = 50.24

8 0

3 years ago

Choose the formula for the volume of a rectangular box, V = lwh written in terms of w.

lilavasa [31]

The width of the rectangular box will be 8cm

Given that the formula for calculating the volume of a rectangular box is expressed as:

$V=lwh$