What is another way to write the expression using the Commutative.(1 5/8 + 4 3/4) + 3 2/8

Answers

Answer 1

Answer: commutative property of addition is
a+(b+c)=(a+b)+c

so just move the partenthsees ()

(1 5/8+4 3/4)+3 2/8=1 5/8+(4 3/4+3 2/8)

Answer 2

Answer: $(1 (5)/(8)+4 (3)/(4))+3 (2)/(8) = \n \n( (13)/(8)+ ^(2))(19)/(4))+(26)/(8)= \n \n (13+38)/(8)+ (13)/(8)= \n \n (64)/(8)= \boxed{8}$

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Word form of 53,200.4

Answers

The word form of 53,200.4 would be fifty-three thousand, two hundred and four tenths.

Now remember, to say a number in a decimal in word form, you must remember the names for each placement.

.1 the one would be in the tenths

.01 the one would be in the hundredths; and

.001 the one would be in the thousandths.

fifty three thousand two hundred and four

A dairy farm has 9 pastures and 630 cows. The same number of cows are placed in each pasture. How many cows are in each pasture?

Answers

Answer=70

9 pastures 630cows

630cows/9pastures=70 cows per pasture

A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all the way around the pool. The total area of the deck is 456 square feet. How wide is the walkway?A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet

Answers

Ahh, this question goes all the way back to my year 9 test a couple years ago; which I got wrong back then - I now know how

Firstly we find the expression for the area (using x as the walk way):
>50x * 2 (the left and right)
>20x * 2 (the top and bottom)
>4 * x^2 (the corners)

Add them all together , Area = 140x + 4x^2
Now we place the deck's area, 456 into the expression

456 = 140x + 4x^2

Solve for x
I'm a bit rusty on this i'm afraid, but I believe the only way to solve this is to factorise it
0 = 4x^2 + 140x - 456
0 = 4(x+38)(x-3) <
x must = -38 or = +3 (the numbers inside the brackets inverted)
x must = +3 as it's logical, you can't have a negative width

The walkway is 3 feet wide, we can put this into our expression to double check this,
456 = 140*(3) + 4(3)^2
456 = 420 + 4*9
456 = 420 + 36
456 = 456
Yes, 3 feet wide is correct.

*Note, I tried to keep this simple, please let me know if I didn't go into enough detail anywhere

The answer is b. 3 ft

The area of the square is a function of its perimeter. Graph the function on a second sheet of grid paper. Explain whether the function is linear and if the graph is increasing or decreasing.How am I supposed to do this problem?

Answers

the answer is not a linear equation and the graph is decreasing. sorry i had made a mistake the first time

Francis is getting new carpet tiles in his living room and den. His living room and den are connected. He needs to figure out how much carpet he needs.What is the area of the den?

Answers

area of den =8x3 = 24ft²
living room = 7x6 = 42ft²

total = 24+42 = 66ft²

the answer would be 48 because they are asking how much for the den

8*3=24

24*2=48

Least to greatest fractions 1/2, 2/5, 6/10

Answers

2/5, 1/2, 6/10 is the order from these fractions from least to greatest.

To solve this problem, we must put all of the fractions into a common denominator. In this instance, we shall choose 10.

2/5 = 4/10
1/2 = 5/10
6/10 = 6/10

Therefore, because we now have all the fractions in a common denominator, we know that 4<5<6, so the fractions should be arranged in the order above.

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