MATHEMATICS MIDDLE SCHOOL

Simplify the expression. 9x + 2y + 6 + 9y +7What is the coefficient of y?

What is the constant?

Answers

Answer 1
Answer:

The coefficient of y is 11 and the constant term of the expression is 13

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

The expression is given as

9x + 2y + 6 + 9y + 7

The expression can be simplified as grouping the like terms together , so the coefficients of the same variables can be added together along with constants

So ,

( 9x ) + ( 2y + 9y ) + ( 6 + 7 )

On simplifying , we get

9x + 11y + 13

Now , the coefficient of y is 11

And , the constant term of the expression is 13

Hence , the coefficient of y is 11 and the constant term of the expression is 13

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Answer 2
Answer: Coefficient of y would be 11, entire simplified expression would be: 
9x+11y+13

Constant would be 13.

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The sum of two numbers is 39. The smaller number is five less than the larger number. What are the numbers?

Answers

Answer:

22 and 17

Step-by-step explanation:

Using guess and check, I found this answer. If you wanted to show your work, you could make a table and put both numbers on the left side, add them up, and put the answers on the right side until you got to 39.

What are the first three common multiples of 5 and 15

Answers

The first 3 common multiples of 5 and 15 are 15, 30, and 45. Remember that the number itself is also a multiple of any number, since you can multiply it by 1.

5 - 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
15 - 15, 30, 45, 60, 75, 90, 105

Hope this helps!

Devon studied the composite figure.(Picture 1)
He believed the surface area, in square units, could be found by simplifying the expression
(Picture 2)
What error did Devon make?

A. He used 26 instead of 24 as the slant height of one set of lateral faces.
B. He omitted the rectangle where the upper and lower solids join together.
C. He included the 34 by 20 base of the figure.
D. He believed the upper part of the figure was a pyramid instead of a prism.

Answers

If we look at his calculations
2((9)(20) is the front an back rectangle
2((9)(34)) is the side rectangles
(34)(20) is the bottom
2(1/2(20(24)) is te front and top triangles
and the last one assumes that they are triangles which is incorrect

answer is D

Answer:

D

Step-by-step explanation:

What are dimensions of a rectangular prism with a volume of 576?Not including 6x8x12

Answers

There are many  answers to this
One of it is 8x8x10

The rise and span for a roof are shown. The pitch of a roof is the ratio of the rise to the half-span. If the rise is 8 feet and the span is 30 feet, what is the pitch in simplest form?

Answers

Half-span is half of span. Pitch of the roof is calculated as rise/(span/2). In this case, rise is 8 feet and span is 30 feet. So, the pitch can be calculated as 8/(30/2) or 8/15. Pitch is normally represented as the number of inches of rise per foot. So, to reduce 8/15 to match a foot, we multiply it by 12. So, (8/15) * 12 gives us 6.4 inches of rise per foot.

The pitch or slope of a roof is defined as the ration of rise and half of the span. In equation we can write:

Pitch=(Rise)/(Half-span)

Half-Span equals the run. So we can define the Pitch as:

Pitch = (Rise)/(Run)

Rise = 8 feet

Run = Half of span = 15 feet

Using the values in the above formula, we get:

Pitch = (8)/(15)

Therefore, the pitch (or slope) of the roof in simplest form is 8/15

Pitch is normally defined as the vertical rise of a roof for ever 12 feet increase in its horizontal run. The above fraction shows the vertical rise is 8/15 for each 1 feet increase in the horizontal run. So if we simply multiply the the above fraction by 12, we will get the pitch in standard units.

So,

Pitch = 8/15 x 12 = 6.4

Therefore, the pitch of the roof will be 6.4

Y/x = 8Show wether x and y show direct variation
Help I don’t wanna go to summer school

Answers

Answer:

y/x = 8 shows DIRECT variation.

Step-by-step explanation:

y varies directly as x if y = kx for some constant, k.  In other words, y/x is constant.

just a reminder ur loved :))
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