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3 years ago

Which of the following would result in a rational number? **

Mathematics

1 answer:

Tpy6a [65]3 years ago

7 0

Answer:

The answer is A. A+C because Rational numbers can be made by dividing two integers. integers are whole numbers a number that is not a fraction.

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(x+3)(x+5) expand and simplify that pls

Kobotan [32]

Answer:

x^2 + 8x + 15

Step-by-step explanation:

( x + 3 ) ( x + 5 )

1. distribute

( x + 3 ) ( x + 5 )

x^2 + 3x + 5x + 15

2. simplify

x^2 + 8x + 15

3 0

3 years ago

A basketball team wants to paint half of a free-throw circle grey. If the radius of the free-throw circle is 5.4 feet, what is t

FromTheMoon [43]

Answer:

The area which would be painted grey will be "47.7812 ft²".

Step-by-step explanation:

The given values are:

Radius of circle, r = 5.4 feet

Value of pi, π = 3.14

As we know,

Area of Semicircle = $\frac{\pi r^2}{2}$

On putting the values in the above formula, we get

= $\frac{3.14\times (5.4)^{2}}{2}$

= $\frac{3.14\times 29.26}{2}$

= $\frac{91.5624}{2}$

= $45.7812 \ ft^2$

5 0

3 years ago

45/14 as a decimal rounded to the nearest 10th

ozzi

Answer:

3.2

Step-by-step explanation:

3.21428571429 is the exact answer and rounded to the nearest tenth is the first number after the decimal.

4 0

3 years ago

Simplify 3^8 x 3^4 divided by 3^2 x 3^8 in index form

-Dominant- [34]

3^2
Here’s the working out;

4 0

3 years ago

The half-life of uranium-238 is 4.5x10^9 years. The half-life of uranium-234 is 2.5x10^5 years. How many times greater is the ha

lara31 [8.8K]

<u>Answer:</u>

Half-life of uranium-238 $18 \times 10^{3} \text { times greater }$ that of uranium-234

<u>Explanation:</u>

Half time of uranium-238 = $4.5\times 10^9$ years

Half time of Uranium-234 = $2.5\times 10^5$ years

To find how much times greater the half life of uranium-238 is from uranium-234

= $\frac{\text { Half life of Uranium-238 }}{\text { Half time of Uranium - 234 }}$

= $\frac{4.5 \times 10^{9}}{2.5 \times 10^{5}}$

= $18 \times 10^{3} \text { times greater }$

Hence Uranium-238 is $18 \times 10^{3} \text { times greater }$ than Uranium-234

4 0

3 years ago