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3 years ago

9

Ricardo has 2020 coins, some of which are pennies (1-сent coins) and the rest of which are

1 answer:

r-ruslan [8.4K]3 years ago

6 0

Answer:

B

Step-by-step explanation:

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Jason runs 440 yards in 75 seconds. At this rate, how many minutes does it take

Leya [2.2K]

Answer:

5 minutes

Step-by-step explanation:

We know that 1760 yards are in a mile. We can convert the given info into a proportion. 440/75 = 1760/x, where x is the number of seconds it takes to run a mile. Cross-multiply to get 440x = 75*1760. Divide both sides by 440 to get x = 75*4 = 300 seconds. The problem asks for how many minutes so you have to convert 300 seconds to minutes. To do this, we have to divide 300 by 60 to get 5 minutes.

3 0

3 years ago

Read 2 more answers

A line goes through the points (0, -5) and (-3, -3). Find the slope, and then use the point that is the y-intercept to write the

ValentinkaMS [17]

Answer:

y = -(2/3)x - 5

Step-by-step explanation:

y-int = -5

m = rise/run

m = (-5-(-3))/(0-(-3))

m = -(2/3)

therefore,

y = -(2/3)x - 5

6 0

2 years ago

Ria can paint a room in 4 hours. Destiny can paint the same room in 6 hours. How long would it take Ria and Destiny to paint the

Lerok [7]

Time taken by Ria to paint a room = 4 hours

Time taken by Destiny to paint a room = 6 hours

If they work together, they complete 1 job. So,

$\frac{1x}{4}+\frac{1x}{6}=1$

The LCD of 4 and 6 is 12

$\frac{3x+2x}{12}=1$

$\frac{5x}{12}=1$

$5x=12$

$x=\frac{12}{5}$

Hence, both of them can paint the room in $\frac{12}{5}$ hours or 2.4 hours.

4 0

3 years ago

Read 2 more answers

Marti is filling a 10– inch diameter ball with sand to make a medicine ball that can be used for exercising. To determine if the

Mice21 [21]

Answer:

Option A. $30\ pounds$

Step-by-step explanation:

step 1

Find the volume of the sphere ( medicine ball)

The volume is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$r=10/2=5\ in$ ----> the radius is half the diameter

Convert inches to feet

Remember that

1 ft=12 in

$r=5\ in=5/12\ ft$

assume

$\pi=3.14$

substitute

$V=\frac{4}{3}(3.14)(5/12)^{3}$

$V=0.3029\ ft^{3}$

step 2

Find the weight of the ball

Multiply the volume in cubic foot by 100

$0.3029*100=30.29\ pounds$

Round to the nearest pound

$30.29=30\ pounds$

6 0

3 years ago

What number is one hundred thousand more than<br> 900,000? Explain how you know.

tamaranim1 [39]

Answer:

1,000,000

Step-by-step explanation:

addition and maths

6 0

3 years ago

Read 2 more answers