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2 years ago

What is the value of 3- (-2)

Mathematics

1 answer:

igomit [66]2 years ago

6 0

Answer:

Step-by-step explanation:

okay, let's start with the -(-2). In math, the negative of a negative is positive. so basically, the -(-2) becomes a positive. The positive version of -2 is +2. So, the equation becomes 3+2, which is 5.

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o-na [289]

The correct answer is b

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3 years ago

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HELP!!!

ella [17]

Answer:

120

Step-by-step explanation:

We are given that the function for the number of students enrolled in a new course is $f(x) = 4^{x}-1$ .

It is asked to find the average increase in the number of students enrolled per hour between 2 to 4 hours.

We know that the average rate of change is given by,

$A = \frac{f(x)-f(a)}{x-a}$ ,

where f(x)-f(a) is the change in the function as the input value (x-a) changes.

Now, the number of students enrolled at 4 = f(4) = $f(x) = 4^{4}-1$ = 255 and the number of students enrolled at 2 = f(2) = $f(x) = 4^{2}-1$ = 15

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3 0

4 years ago

How many three-digit numbers are divisible by 3.

yawa3891 [41]

Answer:

300 numbers are divisible by 3

Step-by-step explanation:

some of them include

102,105,108,111,114,117,120,123,126,

129,132,135,138,141,144,147,150,153,

156,159,162,165

i don't have an explanation just knew form a while back

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7 0

3 years ago

Read 2 more answers

Factor.

yawa3891 [41]

Answer:

A) (2x + 1)(x + 3)

Step-by-step explanation:

Factor 2x² + 7x + 3

Since 2 is prime (it's only factors are 1 and itself) we know we can start out our factors as..

(2x + a)(x + b)

Three is also prime, so we either have

(2x + 1)(x + 3)

(2x + 3)(x + 1)

Foiling (2x + 1)(x + 3) will give us the result we want. So the answer is A

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3 years ago