MATHEMATICS MIDDLE SCHOOL

Help please my brain hurts

Answers

Answer 1

Answer:

Answer:

Do it yourself

Step-by-step explanation:

Answer 2

Answer: 33 is the answer I hope it helped you!!!

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determine wheter 3x+12+x is equivalent to 4(3+x). use properties of operations to justify your answer. please help! answer only if you know!

Answers

3x + 12 + x = 4x + 12 becuase 3x and x are like terms so you can add them
4(3 + x) = 12 + 4x because 4 times 3 is 12 and 4 times x is 4x so you add them to get 12 + 4x which can be rearranged to equal 4x + 12
So in short: 3x + 12 +x is equivalent to 4(3+x)

A rectangle has a perimeter of 80 inches. Write an equation to represent the area A in terms of width w. Do I use the perimeter?

Answers

Answer:

$A = 40w-w^2$

Step-by-step explanation:

We are given the following in the question:

Perimeter of rectangle = 80 inches.

Let l be the length and w be the width of rectangle.

Perimeter of rectangle =

$P= 2(l+w)$

Putting values, we get,

$80 = 2(l+w)\n40 = l+w\n\Rightarrow l = 40 - w$

Now, we have to find the area of the rectangle in terms of w.

Area of rectangle =

$A = l* w$

Putting values, we get

$A = (40-w)w\nA = 40w-w^2$

is the required expression of area of rectangle in terms of w.

Yes, the perimeter is used to calculate the length of the rectangle in the term of w.

5. Lenny is moving tables in the schoolcafeteria. He places all the tables in a
7 X 4 array. How many tables are in
the cafeteria?

Answers

The answer would be 28 because u count 7 4 times

70-q-q-2q=80 We'll this is confusing

Answers

70 - q - q - 2q = 80

-4q = 80 - 70

-4q = -10
q = -10/-4

q = -2.5

70-q-q-2q=80
or, 70 - 2q - 2q = 80
or, 70 - 4q = 80
or, -4q = 80 - 70
or, -4q = 10
or, q = 10/-4
or, q = -2.5 (ans)

Sketch a plane containing points E,D, and B; where E and B are collinear with A , and D is a vertex where CD and FD meet. PLEASE HELP.

Answers

Solution:

we have been asked to sketch a plane containing points E, D and B.

where E and B are collinear with A. It mean all thses three points will fall on a straight line. Also D is a vertex where CD and FD meets.

The sketch has been attched below.

Here as you can see three points are in a staright line and we have another one in whuch two vectors CD and FD are meeting at the vertex D.

X squared minus 36 equals 0. Solve for x

Answers

Answer: x = 6

Step-by-step explanation:

x^2 - 36 = 0

+ 36

x^2 = 36

We know 6^2 = 36

We can conclude that x = 6

6^2 - 36 = 0

36 - 36 = 0

0 = 0

Answer:

x = 6

Step-by-step explanation:

x has to be squared by 6 because 6x6 is 36. Then, you subtract 36 from 36 to get 0. This is how to solve this. I hope it helps.

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