MATHEMATICS MIDDLE SCHOOL

Plz do all and i will give brainlyest

Answers

Answer 1

Answer:

Answer:

Look down

Step-by-step explanation:

1) 40pi meters^2

2) 8100pi yards^2

3) 324 pi meters^2

Answer 2

Answer:

Answer:

1. 125.66 m

2. 282.74 yds

3. 254.47 m

PLEASE GIVE ME BRAINLIEST

Step-by-step explanation:

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Find the sum of 301+73+27, mentally, using the Associative Property of addition. Show how you can use the property to group two of the addends. Explain how you found the sum.

Answers

The answer is 401, because you can put parenthesis between 73 and 27. The equation would now be 301+(73+27). You do the expression inside the parentheses first. Now it will be 301+(100) which is the same as 301+100. You know 301 plus 100, which is 401. There's your answer. I hope this helped.

the graph models the cost of cheese pizza with extra toppings at two different restaurants. According to the graph, about how many pizza toppings must be added to make the cost of the pizzas equal? A. 5 B. 10 C. 12 D. 16

Answers

The correct answer is A) 5.

This is a problem of solving two simultaneous equations and approximation. There are two functions for cost and we have to spot where they intersect. The two functions intersect at when the x variable which represents number of toppings is about 5. This value represents when customers buy cheese pizza with a total of 5 toppings.

The correct answer is A.5

You are planning to make a collage and are gathering materials.for the backing you will use a piece of heavy recycled cardboard that is 4 3/4 feet longhand 2 2/5 feet wide .one side of the cardboard will be covered with fabric.the other side will be left bare against the wall when you hang the collage. Estimate how much fabric you will need explain ? Part 2 you decide to place a design in the middle of the cardboard. This will take up an are of 4 1/2 squqre feet rectangular cut outs that have an area of3/8 sq feet will cover this area how many rect will fit in this area?

Answers

1. 4 3/4 feet = 19/4 feet
2 2/5 feet=12/5 feet.
multiplying them together yields
$(19)/(4) * (12)/(5) =$
$= (57)/(5) = 11.4 ft^(2)$

Part 2:
11.4 ft^2 - 4 1/2 ft^2=
11.4-4.5=6.9 ft^2 = 69/10 ft^2 left after you subtract the decoration in the middle
Now you're trying to find now many rectangular cutouts (that each are 3/8 ft^2) will fit in the remaining space.
You do that by dividing the remaining space left by 3/8:
$(69)/(10) / (3)/(8) = (69)/(10) * (8)/(3) = (92)/(5)$
since you have to have a whole number of cutouts, you round 92/5 down to 90/5, which is 18 cutouts

Simplify

(2x^{2} - 5x + 3) - (-x^{2} + 4x - 5)

Answers

Answer:

3x^2 - 9x + 8

Step-by-step explanation:

To simplify:

Distribute the -1 into the second term.
Collect and combine like-terms (terms with the same variables or powers)

The expression can be rewritten has (2x^2 - 5x + 3) -1(-x^2 + 4x - 5)

After distributing the -1, the equation becomes:

(2x^2 - 5x + 3) + (x^2 - 4x + 5)

The like-terms are:

2x^2 and x^2
-5x and -4x
3 and 5

Combine the like-terms:

2x^2 + x^2 = 3x^2
-5x - 4x = -9x
3 + 5 = 8

Substitute the simplified like-terms into the expression, in descending order:

3x^2 - 9x + 8

I need help with 2 math questions???

Answers

#1).
Surely, now that you're in middle school, you know that the volume of a cube is

   (the length of the edge)-cubed
OR
   (length of the edge) x (length of the edge) x (length of the edge) .

The length of the edge of the cube in the picture is 9-ft.
To find the volume of the cube, use the formula that I just reminded you of.

#2).
Twenty minus nine is written as (20 - 9).
Seven is written as (7) .
Their product is written as (20 - 9) x (7) .

To find the value of the expression:

Do the subtraction inside the parentheses: (20 - 9) = 11
So now the whole expression is
   (11) x (7)
Now do the multiplication:
   11 x 7 = 77

Three vertices of a square are (–2, 2), (–2, –3), and (3, –3). What is the fourth vertex of the square?

A.
(–3, 2)

B.
(–2, 3)

C.
(3, 2)

D.
(3, 4)

Answers

C (3,2) because since you know that the sides of the square lie on the lines x=-2 and x=3 and the vertices are 5 units apart, the next side which lies on x=3 must be (3,2)