2 years ago

What is 13x + 21y - 14x - y simplified?

Mathematics

1 answer:

Arisa [49]2 years ago

4 0

Answer:

-x + 20y

Step-by-step explanation:

trust me.. its right

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The United States has a total area of 3,796,742 square miles.

Dvinal [7]

Answer:

4 * 10^6

Step-by-step explanation:

3,796,742 is about 4,000,000

4 * 10^? = 4,000,000

4 to 4,000,000 is an extra 6 zeroes

? = 6

4 * 10^6

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2 years ago

Keitaro walks at a pace of 3 miles per hour and runs at a pace of 6 miles per hour. Each month, he wants to complete at least 36

Kamila [148]

A. 2x3=6 and 6x12=72 so 78 is greater than 36

6+72=79 which is less than 90

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2 years ago

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Find the value of this expression if x = 5 and y = -1

geniusboy [140]

Answer:

5/6

Step-by-step explanation:

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2 years ago

Alvin’s age is two times Elga’s age. The sum of their age is 60. What is Elga’s age?

Nady [450]

x = Elgas age

2x = Alvins age

x +2x = 60

3x =60

x = 60/3 = 20

Elga is 20 years old

4 0

3 years ago

the elves were working when the head elf came in and there was only 2 weeks left until christmas. what percentage of the month w

valentina_108 [34]

Answer:

45 %

Step-by-step explanation:

Time left until Christmas = 2 weeks

= 2 * 7 days [since 1 week = 7 days]

= 14 days

Number of days in December = 31

Percentage of the month left before Christmas = $\frac{Time left until Christmas}{Number of days in December} * 100$

= $\frac{14}{31} * 100$

= 0.45 * 100

= 45 %

4 0

3 years ago