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3 years ago

Which of the following statements about a variable are true?

Mathematics

2 answers:

Natasha2012 [34]3 years ago

6 0

A is the correct answer

kykrilka [37]3 years ago

3 0

1 and 3 would be your answer! A missing variable is almost ALWAYS represented by a letter, and that letter represents a quantity. Hope this helped

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The senior classes at High School A and High School B planned separate trips to Lake Compounce. The senior class at High School

storchak [24]

Answer:

Number of students in vans =15 and bus =46

Step-by-step explanation:

use variables for the vans and buses

let x= vans and y=buses

Now solve the 2 equations simultaneously

remember to number your equations

6x+7y=412..........1

6x+9y=504.........2

make x the subject of one equation

and label it equation 3

6x=412—7y

$x = \frac{206}{3} - \frac{7y}{6} .............3$

subs 3 into 2

$6( \frac{206}{3} - \frac{7y}{6} ) + 9y = 504$

$412 - 7y + 9y = 504$

$- 7y + 9y = 504 - 412$

$2y = 92$

$y = 46...................4$

subs 4 into 1

$6x + 7(46) = 412$

$6x + 322 = 412$

$6x = 412 - 322$

$6x = 90$

$x = 15$

Therefore there are 15 students in each van and 46 students in each bus.

3 0

3 years ago

Help please...................

dlinn [17]

Answer:

2.8 inches each month

Step-by-step explanation:

14 divided by 5

8 0

3 years ago

An online video game club charges $10 to join and $8 per month after that. Which equation can you solve to find out how long you

mel-nik [20]

8x+10=75
-10 -10
8x = 65
/ 8 /8
x= 8.125

4 0

3 years ago

To make lemonade, Ms. Jacobi combines six ounces of water with three ounces of drink mix. Which of these shows a possible combin

notsponge [240]

6 is double the amount of 3
this means that you need double the amount of water than drink mix.
as a ratio, this can be written as 2:1.

(this is the best answer i could get because i don’t think you included the whole question)

:)

5 0

3 years ago

What is the solution of the following one-step equation? X-8 = 15

kotykmax [81]

Answer: x=23

Step-by-step explanation:

X-8=15. Add 8 to both sides. The 8 cancels on the left side because -8 +8 is 0 leaving x. 15+8=23 meaning x=23.

6 0

4 years ago

Read 2 more answers