4 years ago

A rectangle has length x+9 and width 2x-1 what are the areas of the rectangle

Mathematics

1 answer:

AlekseyPX4 years ago

4 0

Area=l*w

a=(x+9)(2x-1) <--- Use FOIL

a=2x²-x+18x-9
a=2x²+17x-9

Hope I helped :)

You might be interested in

-6x + 14 < -28<br> AND 3x + 28 < 25

trasher [3.6K]

Answer:

x>7

-6x+14< -28

-14. -14

-6x<-42

÷-6 ÷-6

x<7

switch signs because we divided by a negative number

x>7

Answer: x<-1

3x+28<25

-28 -28

3x<-3

÷3 ÷3

x<-1

7 0

3 years ago

At Best Buy they have a stereo system that sells for $2500 and is on sale for 9% and sales tax is 5%. What is the final cost?

Vedmedyk [2.9K]

Answer:

Final cost = $2388.75

Step-by-step explanation:

Cost of stereo system = $2500

Sale = 9%

Cost of sale = 9% of 2500

Cost of sale = $\frac{9}{100}*2500 = 0.09*2500$

Cost of sale = $225

Price after sale = 2500 - 225 = $2275

Sales tax = 5% of 2275

Sales tax = 0.05 * 2275 = $ 113.75

Final cost = 2275 + 113.75 = $2388.75

7 0

3 years ago

4000 dollars is placed in an account with an annual interest rate of 7.25%. To the

Katarina [22]

Answer:

Step-by-step explanation:

7 0

3 years ago

Markel said he has 4 times

bulgar [2K]

Answer:

4:1

Step-by-step explanation:

8 0

3 years ago

For each set of measurements, decide whether or not it is possible to draw a triangle with these measurements. Side lengths: 2 c

Anton [14]

Answer:

It is not possible to make a triangle with these dimensions. Hope this helps!

Step-by-step explanation:

8 0

3 years ago