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3 years ago

Anyone wanna help me with math?

Mathematics

2 answers:

Stells [14]3 years ago

8 0

#3: There are 31 kids in the P.E. class.
#4: 6 kids ran a mile in less than 9 minutes.
#5: 15 fewer students ran a mile in less than 11 minutes.

Sati [7]3 years ago

6 0

Answer:

#8 is that many families with younger children and groups of teenagers tend to do things like mini golf later in the evening than during the afternoon.

Step-by-step explanation:

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A hemispherical dome of radius 50 feet is to be given 3 coats of paint, each of which is 1/100 inch thick. Use linear approximat

Alchen [17]

Answer:

Step-by-step explanation:

5 0

3 years ago

(5x^2-7x+5)-(9x^2+6x-4)

Blababa [14]

The simplified form would be -4×^2-13x+9

3 0

3 years ago

Read 2 more answers

A study was done to determine the average number of homes that a homeowner owns in his or her lifetime. For the 60 homeowners su

const2013 [10]

Answer:

D) (3.67, 4.73)

Step-by-step explanation:

Confidence Interval for the true average number of homes that a person owns in his or her lifetimecan be calculated using M±ME where

M is the average number of home owned (4.2)

ME is the margin of error from the mean

And margin of error (ME) can be calculated as

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic in the given confidence level(1.96)

s is the standard deviation of the sample(2.1)

N is the sample size (60)

Putting the numbers we get ME= $\frac{1.96*2.1}{\sqrt{60} }$ ≈0.53

Then the 95% confidence interval is 4.2±0.53 or (3.67, 4.73)

6 0

2 years ago

Can u help me with this?

sattari [20]

12.5 is your answer! Hope I helped! :D

6 0

2 years ago

3. Ruby and Sapphire love strawberries. Ruby starts out with 10 strawberries and finds 3 more

Svetllana [295]

Answer:

4 minutes

Step-by-step explanation:

Let the time taken for them to have the same number of strawberries be x minutes.

<u>Initially</u>

Ruby: 10 strawberries

Sapphire: 30 strawberries

<u>After x minutes</u>

Ruby: (10 +3x) strawberries

Sapphire: (30 -2x) strawberries

Since we let x minutes be the amount of time that has passed when they have the same amount of strawberries,

10 +3x= 30 -2x

Bring all x terms to one side, constant to the other:

3x +2x= 30 -10

Simplify:

5x= 20

Divide both sides by 5:

x= 20 ÷5

x= 4

∴ It will take 4 minutes.

3 0

2 years ago