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muminat
3 years ago
8

You have a total of 21 pens and pencils on your desk. You have 3 more pens than pencils. Write a system linear equations that re

present this situation. How many of each do you have?
Mathematics
1 answer:
labwork [276]3 years ago
4 0

Answer:

x + y = 21x - y = 3

Step-by-step explanation:

You might be interested in
3. A rectangular room is 15 feet by 9 feet. Carpet costs $3.50 per square foot. How much would it cost to buy
Alja [10]

Answer The dimensions of the room in inches on the scale drawing is inches by inches OR 3.25 inches by 3.75 inches

Step-by-step explanation:

From the question, the dimension of the room is 13feet by 15feet.

Now, if the room is drawn to 1/4 inch represents 1 foot scale, i.e 0.25 inch represents 1 foot, then the dimension of the room in inches on the scale drawing can be determined as follows

Since 1 foot = 0.25 inch  

∴ 13 feet on the scale drawing will be 13 × 0.25 = 3.25 or 3 1/4 inches

and 15 feet on the scale drawing will be 15 × 0.25 = 3.75 or 3 3/4 inches

Hence, the dimensions of the room in inches on the scale drawing is

inches by inches OR 3.25 inches by 3.75 inches.

8 0
3 years ago
1 book costs 6.50$ plus 4.95$ postage. Of Paul spend $63.45 on books, how many books did he buy?
Katena32 [7]
Add 6.50 and 4.95 which equals 11.45
Then multiply 11.45 by 5 which would equal 57.25 which would mean that he bought 5 books

6.50+4.95=11.44

11.45x5=57.25=answer
5 0
3 years ago
what are the new coordinates after reflecting across x=2 if the coordinates are K(-2,-1) L(-2,-3) M(-5,-3) N(-5,-1)
cestrela7 [59]

Answer:

K' (-2, 1) L'(-2, 3) M' (-5, 3) N' (-5, 1)

4 0
4 years ago
WILL GIVE BRAINLIEST PLZ HURRY
Gala2k [10]

Answer:

Joey has 3 pets.

Step-by-step explanation:

f. 3x = 9

9 divided by 3 is 3.

x = 3

hope this helps!

4 0
3 years ago
Simplify the following using a Property of Integer Exponents.<br><br> 2,345⁰
Llana [10]
It’s 1, anything to the zero power is one.
7 0
4 years ago
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