A student raises her grade average from a 75 to a 90. What was the percent of increase in the student’s grade average? Round your answer to the nearest tenth of a percent, if necessary.

Answers

Answer 1

Answer: =(new-old)/old *100%
=(90-75)/75 *100%
=20%
hope it helps

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Given the parent functions f(x) = log3 (5x − 5) and g(x) = log3 (x − 1), what is f(x) − g(x)?. . a. f(x) − g(x) = log3 (4x − 4). b.f(x) − g(x) = log3 (4x − 6). c. f(x) − g(x) = log3 5. d. f(x) − g(x) = = log3 1/5.

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$f ( x ) = log _(3) ( 5 x - 5 ), g ( x ) =log _(3) ( x - 1 ); \n f ( x ) - g ( x ) = log _(3)( 5 x - 5 ) - log _(3)( x - 1 ) = \n log _(3) (5(x-1))/(x-1) = log _(3) 5$
Answer: C ) f ( x ) - g ( x ) = log3 5

Three fourths of a number decreased by nine is at least forty-two. As an inequality.

Answers

Answer

x ≥ 68

Explanation

let that number be x.

(3/4) of x = (3/4) × x

= 3x/4

Decrease 3x/4 by 9,

3x/4 - 9

This expression is at least 42,

∴ 3x/4 - 9 ≥ 42

3x - 36 ≥ 168

3x ≥ 168 + 36

3x ≥ 204

x ≥ 68

(3x/4) - 9 > 42

that > should be underlined to get the "or equal" in there

A 4-pound bag of sugar contains 454 one-teaspoon servings and costs $3.49. A batch of muffins uses 1/4 cup of sugar. How many batches can you make if you use all the sugar? What is the cost of sugar for each batch? (1 cup = 48 teaspoons)

Answers

About 9 times with a remainder of 22 teaspoons

What is the multiplicative inverse of 6 + 2i?

Answers

The product of a number and it multiplicative inverse is 1. Let the multiplicative inverse of 6 + 2i be x. Then
x(6 + 2i) = 1
x = 1/(6 + 2i) = (6 - 2i)/(6 + 2i)(6 - 2i) = (6 - 2i)/(36 - 12i + 12i + 4) = (6 - 2i)/40

We have to multiply (6 + 2i) with its conjugate:
(6 + 2i) (6 - 2i) = 36-12i+12i-4i^2
As i^2= -1 . So ,
= 36+4
= 40
So 40 +is the correct answer.

Arrange the systems of equations in order from least to greatest based on the number of solutions for each system.

Answers

Answer:

case 1

3x-7y=9

-4x+5y=1

using a graph tool

the solution is the point (-4,-3)------------------> one solution

case 2

y=6x-2

y=6x-4

two parallel lines

the system has no solution---------------> zero solution

case 3

-5x+y=10

-25x+5y=50

is the same line----------------> infinite solutions

Answer:

work is shown and pictured

Can somebody pls help ill give you 10 or 22 points pls I’m stuck.

Answers

Sorry no roller

Hope it’s right
Best luck with your studying

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