MATHEMATICS MIDDLE SCHOOL

Simplify the expression 7y+6-1+12y

Answers

Answer 1
Answer:

Answer:

19y+5

Step-by-step explanation:
Answer 2
Answer:

Answer: 5+5y


Step-by-step explanation:

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How to find the surface area of a trapizoid formula, maybe walkthrough if possible?

Answers

Trust me, it's really easy!
break apart the shape (In 3D, I assume.) there should be 6 breaks apart. The top, bottom, and four sides. After you find the area, (Base x Base x Height for the 4 sides, and Side x Side for the top and the bottom of the figure.) Then you add all of them up, and there's the surface area!  If you need more help, message me, I'd be glad to help.

Please help me! Im in need of this answer please provide an explanation as well!

Answers

Answer:C

Step-by-step explanation:Because

Answer:A.18

Step-by-step explanation:

On a scale drawing of a museum, two water fountains are 10 inches apart. The actual distance between them is 400 feet. On the same drawing, the distance between two exhibits is 3.125 inches. What is the actual distance between these two exhibits?

Answers

Answer:

The actual distance between these two exhibits = 125 feet.

Step-by-step explanation:

Given :

Two water fountains are 10 inches apart on a scale of drawing museum

The actual distance between them is 400 feet.

On the same drawing, the distance between two exhibits is 3.125 inches.

To Find : What is the actual distance between these two exhibits?

Solution :

Since Two water fountains are 10 inches apart on a scale of drawing museum and The actual distance between them is 400 feet.

⇒ 10 inches = 400 feet

So, 1 inch = 400/10

⇒1 inch = 40 feet

Since we are given that  the distance between two exhibits is 3.125 inches.

So , the actual distance between two exhibits (i.e.in feet ) (Using 1 inch = 40 feet)

= 3.215*40

= 125 feet

Thus , The actual distance between these two exhibits = 125 feet.
The answer is 125 feet. I hope I helped.

Hey guys PLEASE HELP ME SO THIS ONE IS TRICKY AND COMPLEX I APPRECIATE IF SOMEONE REACHES OUT AND HELPS. 2X+Y=-147X-4Y=-19 OK SO FAR I TOOK THE second equation and added 4y to both sides which then resulted in 7x=4y-19 did i do something wrong?

Answers

You can certainly start out that way, but when you solve that equation for x, it's a little more complex than if you started with the other equation.  I usually start with the most simple equation first.  Let's take the first equation and solve for y... that will leave us without any fractions to deal with.

2x + y = -14
y = -14 - 2x

Now we have a y value and we can substitute it back into the other equation.  So we will replace y in the second equation with (-14 - 2x).
That will leave us with just the x as a variable and we can solve for x.

7x - 4y = -19
7x - 4(-14 - 2x) = -19      multiply the -4 through the parentheses
7x + 56 + 8x = -19          combine like terms
15x + 56 = -19                subtract 56 from each side
15x = -75                         divide each side by 15
x = -5

Now we have a value for x that we can substitute back into either of the original equations and then solve for y.  I usually go with the easier equation, but it doesn't matter.  Let's use the first one...

2x + y = -14
2(-5) + y = -14              multiply the 2 through the parentheses
-10 + y = -14                 add 10 to each side
y = -4

So your ordered pair is

(-5, -4)

That is where the 2 lines are equal to one another, so that's the point where they they intersect.

Note***  You can start these problems with either equation and solving for either x or y... it doesn't matter.  After you substitute the values into the other equation it will work out the same.

Is 5 feet bigger than 60 inches

Answers

no, they are equal since in every foot there is 12 inches so 5*12=60
5 feet is equal to 60 inches because 1 foot is 12 incges and 5 times 12 equals 60 inches

What is (-8)(-8)(-1)?

Answers

-64, using the negative times negative equals positive and negative times anything else = negative rule, you get -64
by multiplying -8 (-8) you get 64. then 64 (-1) equals -64
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