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SIZIF [17.4K]
3 years ago
9

ryan took 15 minutes to type his 450 - word report. At this rate, how many words could be type in 20 minutes ?

Mathematics
2 answers:
gogolik [260]3 years ago
7 0

Answer:

600

Step-by-step explanation:

Snowcat [4.5K]3 years ago
5 0

Answer:

600 words

Step-by-step explanation:

15 minutes --- 450 words

20 minutes --- \frac{20}{15} × 450 words = 600 words

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Rounding depending on what the problem is
8 0
3 years ago
Select the correct answer. The radius of a nitrogen atom is 5. 6 × 10-11 meters, and the radius of a beryllium atom is 1. 12 × 1
Grace [21]

A negative exponent means the number of the exponent divide by the number. The the radius of beryllium atom is larger than the radius of a nitrogen atom by two times.

Given information-

The radius of a nitrogen atom is 5.6\times10^{-11} meters.

The radius of a beryllium atom is 1.12 \times10^{-10} meters

<h3>Negative exponents</h3>

A negative exponent means the number of the exponent divide by the number.

As the radius of the nitrogen atom is 5.6\times10^{-11} meters. Convert it in the power of negative exponent of 10.

Let the radius of the nitrogen is r mm. Thus,

r=5.6\times 10^{-11}\\&#10;r=5.6\times 10^{-10-1}\\&#10;r=5.6\times 10^{-10}\times10^{-1}\\&#10;r=\dfrac{5.6\times 10^{-10}}{10} \\&#10;r=0.56\times 10^{-10}

Now the base of the exponents of both the atoms are same. As the radius of the nitrogen atom is 0.56\times 10^{-10} meters and the radius of the beryllium atom is 1.12 \times10^{-10}. Thus the radius of beryllium atom is larger.

To calculate how many times, the radius of beryllium atom should be divided by the radius of a nitrogen atom. Thus,

=\dfrac{1.12\times10^{-10}}{0.56\times10^{-10}} \\&#10;=2

Thus the the radius of beryllium atom is larger than the radius of a nitrogen atom by two times.

Learn more about the negative exponents here;

https://brainly.in/question/1221452

7 0
3 years ago
Simplify csc(-x) /1+tan^2(x)
ruslelena [56]
\frac{-x}{1+\tan^{2}(x)}=-\frac{\cos(x)^{2}}{\sin(x)}.
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Greg has to carry 191 apples from a farm to the market. how many baskets will need, given that each basket can hold 42 apples?
soldi70 [24.7K]
191 / 42 = 4.5.....so Greg is gonna need 5 baskets....but the last basket is only gonna be half full.
8 0
3 years ago
Which expression is equivalent to 6(4<br> + 9)?
agasfer [191]

Answer: 78

Step-by-step explanation:

6(4+9)

use foil to distribute the 6 to the 4 and 9

6×4 + 6×9

24 + 54

⇒ 78

5 0
2 years ago
Read 2 more answers
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