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3 years ago

Choices are associative property and commutative property opposite of a sum property

Mathematics

1 answer:

grin007 [14]3 years ago

3 0

It would be associative property because the order of the numbers stayed the same

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Polynomial Warm Up

Kazeer [188]

Answer:

Step-by-step explanation:

False you must multiply the coefficient (numbers) and add the exponents.

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3 years ago

Johanna carves a square block of wood that has on one side an area of 872 square inches. to the nearest integer, what is the len

BARSIC [14]

Let n be one side of the square wood block. Then:
n²=872
n=√872=approx. 30" per side
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2 years ago

-3x+3y=3<br> -5x+y=13<br> Solve for substitution

vladimir1956 [14]

Take -5x + y =13 and rearrange for y:
y=13+5x

Substitute into other equation for y:
-3x+3(13+5x)=3

Multiply out brackets:
-3x+39+15x=3

Simplify:
12x+39=3

Rearrange for x:
12x=-36
x=-3

Substitute back into y=13+5x:
y=13+5(-3)
y=13-15
y=-2

8 0

3 years ago

Rayhana has a coupon for 15% off a single item at a store. If the item has a regular price of p dollars, then the sale price can

levacccp [35]

Answer: D.

Step-by-step explanation:

8 0

2 years ago

Andrew is about to leave for school. If he walks at a speed of 50 meters per minute, he will arrive 3 minutes after the bell rin

Mariana [72]

Answer:

The answer is: 13 minutes

Step-by-step explanation:

First Let us form equations with the statements in the two scenario

$time=\frac{distance}{speed}$

Let the time in which the bell rings be 'x'

1. If Andrew walks (50 meters/minute), he arrives 3 minutes after the bell rings. Therefore the time of arrival at this speed = (3 + x) minutes

$3 + x =\frac{distance}{50}\\distance = 50(3+x) - - - - - (1)$

2. If Andrew runs (80 meters/minute), he arrives 3 minutes before the bell rings. Therefore the time taken to travel the distance = (x - 3) minutes

$x - 3 = \frac{distance}{80} \\distance = 80(x-3) - - - - - (2)$

In both cases, the same distance is travelled, therefore, equation (1) = equation (2)

$50(3+x)=80(x-3)$

$150 +50x=80x-240\\$

Next, collecting like terms:

$150 + 240 = 80x - 50x\\390 = 30x\\30x = 390\\$

dividing both sides by 3:

x = 390÷30 = 13

∴ x = 13 minutes

7 0

3 years ago