MATHEMATICS MIDDLE SCHOOL

All of the answers please :)

Answers

Answer 1

Answer:

Answer:

Question 8: Area=520in

Question 9: No clue, sorry

Question 12: 300in

Question 11: 400in

Step-by-step explanation:

When you take the area of a figure like question 8, it helps to split the figure into two shapes and take the area of those then add it.

- 11*13= 143 and 29*13=377 377+143=520

Question 11:

A=2(wl+hl+hw)=2·(10·15+2·15+2·10)=400

Question 12:

V=L * W * H

V= 2*10*15= 300in

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Plzzz help ...........

Answers

(-2/3)w - 4/9(-2/3) = -4/5
(-2/3)w + 8/27 = -4/5
(-2/3)w = -4/5 -8/27

-4/5 - 8/27 ⇒ (-4/5)(27/27) - (8/27)(5/5) ⇒ -108/135 - 40/135 = (-108-40)/135
= -148/135

(-2/3)w = -148/135
w = -148/135 ÷ -2/3
w = -148/135 * -3/2 = (-148*-3)/(135*2) = 444/270
w = 1 174/270 or 1 29/45

174 ÷ 2 = 87 ÷ 3 = 29
270 ÷ 2 = 135 ÷ 3 = 45

to check: w = 1 29/45 ⇒ ((1*45)+29)/45 = 74/45

(w-4/9)(-2/3) = -4/5
(74/45 - 4/9)(-2/3) = -4/5
(74/45 - (4/9 * 5/5))(-2/3) = -4/5
(74/45 - 20/45)(-2/3) = -4/5
((74-20)/45)(-2/3) = -4/5
(54/45)(-2/3) = -4/5
(54*-2)/(45*3) = -4/5
-108/135 = -4/5
-4/5 = -4/5

-108 ÷ 27 = -4
135 ÷ 27 = 5

6 tractors take 6 days to collect the harvest. How long would it take 9 tractors to do the same amount of work?

Answers

t - tractors
d - days

$6t * 6d =9t*xd \n \n x= (36td)/(9td) =4$

Four days

What property is 5x6x7=5x7x6

Answers

Commutative Property

The property of 5x6x7=5x7x6 gives the answer of 210.

If a polynomial f(x) is divided by x- a, then find the remainder.

Answers

If f(x) is divided by x - a then the remainder would be equal to f(a)

How to convert 350/100 into a percent and decimal

Answers

to convert 350/100 into a percent you need to know that 1/100 is 100 percent. therefore 350/100 should be 350%.

to convert 350/100 into a decimal you need to know that 1/100 is 0.01.
therefore 350/100 should be 3.50

Why is 20 to 40 is a 100% increase but 40 to 20 is a 50% decrease

Answers

Its because 20 is doubling its self. Its using 100% of its number, While 40 is decreasing by 50%. Half of forty is 20. Half equals 50%.

I think it because how the order change

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