MATHEMATICS
COLLEGE

Answer:

Answer:

f(t)=9,220,000(0.888)^t

Step-by-step explanation:

We use 9,220,000 as our base because this is where the decay begins. To get the correct amount of decay, we need to subtract 11.2% from 1, or 100%. We get 88.8% so we turn this into a decimal by dividing by 100 and getting 0.888. We put this to the power of t to represent the decay because it has to be an exponent to be exponential decay, not linear decay. f(t) is not necessary, you could also use y. Hope this helps :)

MIDDLE SCHOOL

In order for Kevin to prove the polynomial identity (a+b)2=a2+2ab+b2, what is the first step that Kevin needs to use to rewrite (a+b)2? A

2(a+b)

B

a2+b2

C

(a+b)(a+b)

D

(a+b)2(a+b)2

The first step that Kevin needs to use to rewrite (a + b)² is (a+b)(a+b)

Polynomial is an expression that involves only the operations of addition, subtraction, multiplication of variables.

Given the polynomial (a+b)²:

(a+b)²

Firstly simplify the bracket:

(a + b)(a + b)

Multiply both expressions:

a² + ab + ab + b²

Collect like terms:

a² + 2ab + b²

The first step that Kevin needs to use to rewrite (a + b)² is (a+b)(a+b)

Find out more at: brainly.com/question/15301188

Answer:

c

Step-by-step explanation:

we should first write (a+b)(a+b) and then start to calculate the terms

COLLEGE

For which equation does it make the most sense to solve by completing the square? A) 5x² + 3x = 9

B) x² + 20x = 52

C) x^2−8=1

D) 3x^2−x+17=0

Completing the square is a method used to solve a quadratic equation by changing the shape of the equation so that the left side is a perfect square trinomial.

The following equation makes more sense to solve it complete squares:

x² + 20x = 52

We have then:

x² + 20x + (10) ^ 2 = 52 + 100

(x + 10) ² = 152

Answer:

The most sense to solve by completing the square is for:

B) x² + 20x = 52

The following equation makes more sense to solve it complete squares:

x² + 20x = 52

We have then:

x² + 20x + (10) ^ 2 = 52 + 100

(x + 10) ² = 152

Answer:

The most sense to solve by completing the square is for:

B) x² + 20x = 52

MIDDLE SCHOOL

7.5%of what number is 15

Answer:

200

Step-by-step explanation:

If you do 15/.075 gives you 200 meaning 7.5% of 200 is 15.

You can check your answer by doing 200 × .075 which does give you 15

MIDDLE SCHOOL

On Monday at a summer camp spent 4 hours 25 minutes ta the pool learning to swim in the morning the spent 2 hours 48 minutes at the pool how long did the students spend at the pool in the afternoon

Every hour has 60 minutes. If you add 48 minutes from the second time and 25 from the first time, it will give you 73 minutes. If you subtract that by 60 then it will give you 13 minutes. Since 73 was greater than 60, you gain another hour. If you add 4, 2, and that one additional hour, it will be 7 hours. In the end it is 7 hours and 13 minutes. Hope this helps! :)