MATHEMATICS MIDDLE SCHOOL

Represent the following statement by an equation:17 times the sum of a number n and 31 is 357?
What is the value of n?

Answers

Answer 1
Answer: 17(n+31)=357
distribute:
17n+527=357
   -527     -527
17n= -170
÷17     ÷17
n=-10

A: negative 10

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Which expression is equivalent to 4(6x + 11)

Answers

4(6x + 11)

Distributive property 

4*6x = 24x
4*11 = 44

Answer:   24x + 44 
24x+44 is your answer. 

First you do 4×6x=24x. Then you do 4×11=44.
Put them together it will be 24x+44

How do you multiply 2/9 x 3? I got 6/9 and my teacher says that your numerator has to be bigger than your denominator. Plus I have to simplify

Answers

So, first you would make 3 into 3/1.
Now, multiply the numerators, then the denominators.
2  x   3    6=  2
9  x   1    9= 3
Well, your teacher must mean when you turn 3 into 3/1... 
I hope this helps!
I got 6/9 as well, and when you simplify, you get 2/3.

sammy and david were selling water bottles to raise money for new football uniforms.Sammy sold 5 water bottles for every 3 water bottles david sold.together they sold 160 water bottles.how many did each sell?

Answers

Multiply 5 and 3 and the answer would be 15??
Sammy sold 100 and David sold 60

Which ordered pair is the solution to the system of equations?

2x-5y=-5
x+2y=11

Answers

2x-5y= -5
-2/*x+2y=11

2x-5y= -5
-2x-4y= -22
+------------------
-9y=-27
y=3

x+2y=11
x+2*3=11
x=5
2x-5y=-5\nx+2y=11\n\n2x-5y=-5\n-2x-4y=-22\n-------\n-9y=-27\ny=3\n\nx+2\cdot3=11\nx+6=11\nx=5\n\n(5,3)

Subtract 72km 200m-48km 600m

Answers

Answer:

m- 14400km2 +28800km

Step-by-step explanation:

After completing a 10 hour walk, Chester Snowman goes inside to get warm. As he sits by the fire, he starts to melt at a rate of 3 inches per hour. Starting at the height he reached at the end of his walk, determine Chester's height after sitting by the fire for 10 hours.

Answers


We can't tell you the height after sitting by the fire
for 10 hours, because you didn't tell us the height
he reached at the end of his walk.

All we can tell you is that whatever his height was
when he came in to get warm, it's

             (10 hours) x (3 inches/hour)  =  30 inches

shorter after 10 hours by the fire.
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