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3 years ago

You are deciding between two cars with different engines and want the bigger

Mathematics

1 answer:

Anna007 [38]3 years ago

4 0

Answer:

i'm pretty sure the answer is A

Step-by-step explanation:

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A book costs $12.50 plus sales tax. After tax it costs $13.25. What is the sales tax rate?

WINSTONCH [101]

Answer:

The rate of sales tax is 6%.

Step-by-step explanation:

First you must subtract 12.50 from 13.25

This brings you to .75

Then, divide .75/12.50 to get 0.06 which is equivalent to 6 percent.

6 0

3 years ago

Evaluate<br> -6(2) = [?]

professor190 [17]

Answer:

afkdtusttdd worksheet Albertsons Prescott keeps given

8 0

3 years ago

Read 2 more answers

Kyle was asked to make a model to solve the following problem.

Luda [366]

Answer:

yes, kyle is right.

Step-by-step explanation:

4/10 + 2/10 = 6/10

there are 4/10 left after planting which can be reduced by 2 = 2/5

3 0

3 years ago

Read 2 more answers

What does 4x+10 for x=5 <br> The x its not times i'm doing variables

Lilit [14]

Step-by-step explanation:

4x+10

If x=5

4(5)+10

=20+10

=30

5 0

3 years ago

Solve for x and y 1/(x+yi) + 2/(x-yi) = 1+i

aliina [53]

Answer:

Step-by-step explanation:

x+i*y≠0 ==> x≠0 and y≠0

x-i*y≠0 ==> x≠0 and y≠0

We must exclude (0,0) as solution.

$\dfrac{1}{x+i*y} +\dfrac{2}{x-i*y} =1+i\\\\\dfrac{1*(x-i*y)}{(x+i*y)(x-i*y)} +\dfrac{2*(x+i*y)}{(x-i*y)(x+i*y)} =1+i\\\\\\\dfrac{x-i*y+2x+2i*y}{x^2+y^2} =1+i\\\\3x+i*y=(1+i)(x^2+y^2)\\\\3x+i*y=(x^2+y^2)+i(x^2+y^2+i*(x^2+y^2)\\\\\left\{\begin{array}{ccc}3x&=&x^2+y^2\\y&=&x^2+y^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\3x&=&x^2+9x^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\x(10x-3)&=&0\\\end {array}\right.\\\\$

$\left\{\begin{array}{ccc}x&=&0\\y&=&0\\\end {array}\right.\ (to\ exclude) \ or \ \left\{\begin{array}{ccc}x&=&\dfrac{3}{10}\\\\y&=&\dfrac{9}{10}\\\end {array}\right.\\\\Sol=\{(\dfrac{3}{10},\dfrac{9}{10})\}\\$

4 0

3 years ago