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3 years ago

5

The table shows information about the numbers of hours 30 children spent on their tablets one evening.A) Find the class interval

that contains the median.B)Work out an estimate for the mean number of hours

1 answer:

Tresset [83]3 years ago

8 0

Answer:

A- 2<h<3 B- 2.2

Step-by-step explanation:

when you make a dot plot, the median is 11. using that dot plot, you can approximate a mean to be around 2

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A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount.if a jacket cost

Pachacha [2.7K]

Answer:

A shopkeeper marks:

$200 * 1.4 = $280

Step-by-step explanation:

With a discount of 25%:

$280 * 0.75 = $210

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3 years ago

Which expression is a difference of squares with a factor of 2x5?

Sedbober [7]

Answer:

${( \sqrt{3.5} })^{2} - {( \sqrt{1.5} )}^{2}$

Step-by-step explanation:

The difference of two squares identity is

${x}^{2} - {y}^{2} = (x - y)(x + y)$

When we let

$\sqrt{3.5}$

and

$\sqrt{1.5}$

, we get:

${( \sqrt{3.5} )}^{2} - {( \sqrt{1.5}) }^{2} = (3.5 - 1.5)(3.5 + 1.5)$

This will simplify to give us the required factors

${( \sqrt{3.5} )}^{2} - {( \sqrt{1.5}) }^{2} =2 \times 5$

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3 years ago

An artist is painting a flower pot that each require 1/34 gallons of paint what is the maximum numbers of flowerpots the artist

lara [203]

Answer:

C

Step-by-step explanation:

Hello There!

We can easily calculate the amount of flower pots he can paint by dividing the amount of paint he has by how much paint each flower pot requires

$\frac{.75}{\frac{1}{34} } =25.5$

The closest number is 24 therefore your answer is C

8 0

3 years ago

Simplify (7^5)^3<br> A. 7^15<br> B. 35^3<br> C. 7^8<br> D. (1/7)^3

Olegator [25]

Answer:

7^15

Step-by-step explanation:

7^5^3 = 7^(5*3) = 7^15

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1 year ago

2,000,000 mg = how many kg?

cluponka [151]

$1kg=1,000g\\1g=1,000mg\\\\therefore\\1kg=1,000\times1,000mg=1,000,000mg\to1mg=\frac{1}{1,000,000}kg\\\\2,000,000mg=\frac{2,000,000}{1,000,000}kg=\boxed{2kg}$

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3 years ago