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Mariana [72]
3 years ago
12

Evaluate and simplify

Mathematics
1 answer:
nekit [7.7K]3 years ago
6 0

Answer:

20

5r +7s -3(r+s) + 4 = 5r +7s - 3r -3s +4 = 2r +4s +4 = 2(r +2s +2)

when sub r=2, s=3,

2(2+2(3) +2) = 20

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Tell which set or sets the number below belongs​ to: natural​ numbers, whole​ numbers, integers, rational​ numbers, irrational​
Alexus [3.1K]

Answer:

<h3>Rational numbers</h3>

Step-by-step explanation:

A rational number is a number that can be written as a ratio of two integers. The are expressed as fractions. Given the value 8/9, this value is a fraction and is written as a ratio of two integers 8 and 9.

The value is neither a real number, nor an integer because integers and whole numbers are not expressed as fractions.

Natural numbers are also whole numbers starting from 1 and above. Hence 8/9 is not a natural number as well.

Note that irrational numbers are also classified as real numbers and they can not be written as a ratio of two integers.

Conclusively, 8/9 is only classified as a rational number

6 0
3 years ago
Which expression is equivalent to (18)2⋅(19)2
sladkih [1.3K]

The expression that is equivalent to the given expression where the expression is given as (18)2⋅(19)2 is (18 * 19)^2

<h3>How to determine which expression is equivalent to the given expression? </h3>

The expression is given as

(18)2⋅(19)2

Rewrite the above expression properly

So, we have

(18)^2 * (19)^2

The factors in the above expression have the same exponent.

So, the expression can be rewritten as

(18 * 19)^2

Hence, the expression that is equivalent to the given expression where the expression is given as (18)2⋅(19)2 is (18 * 19)^2

Read more about equivalent expression at

brainly.com/question/2972832

#SPJ1

5 0
1 year ago
What is the y-intercept form of -5x+y=-3
marshall27 [118]
-5×+y=-3
I think it's +2
4 0
3 years ago
Three different sets of objects contain 4, 5, and 12 objects, respectively. How
Angelina_Jolie [31]

Answer:

\text{B. }240}

Step-by-step explanation:

\binom{4}{1}\cdot\binom{5}{1}\cdot \binom{12}{1}=\boxed{\text{B. }240}}

(Multiplying each of the numbers also yields 240)

4 0
3 years ago
This afternoon, Sara noticed that the number of the page assigned for homework is divisible by both 12
max2010maxim [7]

Answer:

12

Step-by-step explanation:

Well, 12/12=1, which I guess is the smallest number we can get, and 12 is divisible by 2 too.

7 0
3 years ago
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