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4 years ago

First answer gets the best marks

Mathematics

2 answers:

Delicious77 [7]4 years ago

8 0

Answer:

It's the second answer, im pretty sure.

Step-by-step explanation:

Use the distributive property to distribute 2 into the term in parentheses.

Delicious77 [7]4 years ago

3 0

Answer:

<h2><em><u>B or the second one</u></em></h2>

Step-by-step explanation:

This is because you have the equation of 2(2/5x + 2).

When you simplify it you have to first do the parenthesis.

So, 2 * 2/5 = 4/5. This is because 2/1 *2/5 is 4/5.

Then you have to do 2*2. This is equal to 4.

Put them together. So it will be.

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Is this right? If not let me know and explain how if u can. <br><br><br> (No link <3)

vlabodo [156]

Answer:

9/35

Step-by-step explanation:

There are a total of 15 bulbs to choose from randomly. First a new bulb is chosen. Chance is 9/15 because 9 out of 15 are new.

Then there are only 14 bulbs left. Then a used bulb is chosen. Chance is 6/14 since 6 out of remaining 14 are used.

Total chance for this to happen is 9/15 * 6/14 = 54/210 = 9/35.

8 0

3 years ago

What is the Square root of 45? (Step by step working plz)

kifflom [539]

if you simplify it you would have to find factors of 45 that are perfect squares, for example, the square root of 9 times the square root of 5 is the square root of 45 so if you want to simplify it you would need to take the square root of 9 which is 3

so if you put in simplest form you would get 3 root 5

$3\sqrt{5}$

5 0

3 years ago

In June, a runner ran a mile in 7:45. In September, the runner ran a mile in 5:51.

kolbaska11 [484]

1.4 because you divide 7.45 by 5.51 and you get 1.35 which would be rounded to 1.4

3 0

4 years ago

A biker travels at a rate of 20 miles per hour. Calculate

kow [346]

Answer:

60 miles

Step-by-step explanation:

20 miles times 3

3 0

3 years ago

Read 2 more answers

The Earth’s total diameter is 12700 kilometers, with the solidified, ocean-covered crust that is at its thickest 35 kilometers w

Basile [38]

Answer:

The correct answer is 0.0667 centimeters.

Step-by-step explanation:

Diameter of earth is 12700 kilometers.

Width of the solidified ocean crust is 35 kilometers.

Ratio between the diameter of the earth and the solidified crust is $\frac{12700}{35}$ .

Now the earth is shrunken to a size of a basketball with the diameter as 24.2 centimeters. Let the thickness of the Earth's crust in this model be x centimeters.

Ratio between the diameter of the model earth and the solidified crust is $\frac{24.2}{x}$ .

But this ratio of the real Earth and its model must be equal.

∴ $\frac{12700}{35}$ = $\frac{24.2}{x}$

⇒ x = 0.0667 centimeters.

7 0

3 years ago

First answer gets the best marks ​

First answer gets the best marks