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3 years ago

According to the commutative property of multiplication, which expression is equivalent to (3 + 7)(-2)?

Mathematics

2 answers:

amm18123 years ago

6 0

Answer:

The answer to your question is the letter A) -2(3 + 7)

Step-by-step explanation:

Data

(3 + 7)(-2)

There are two Commutative properties, one for addition and one for multiplication. In this problem, we need to work with the Commutative property of multiplication.

This property tells us that is does not matter the order in which we multiply the numbers the result will be the same.

Then,

(3 + 7)(-2) = (-2)(3 + 7)

galben [10]3 years ago

3 0

A or C although C is the exact same type as the expression shown lol hope I helped :)

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What is the answer to <br> x=3x-20 and y=-6+30

NISA [10]

Answer:y=24 and x=10

Step-by-step explanation:

To find the value of x and y in x=3x-20 and y=-6+30

We gets

y=24

To get x

x=3x-20

Collect like terms

x-3x=-20

Divide through by -2

-2x=-20

x=10

5 0

3 years ago

The quadratic function d= -4x+1,100 models a snowboarder's distance, in feet, from the bottom of a hill x seconds after the snow

Fynjy0 [20]

Answer:

16 seconds (Approximately)

Step-by-step explanation:

Given:

The function that gives the distance of snowboarder from the bottom of hill with time 'x' is:

$d=-4x^2+1100$

Final position of the snowboarder is $d=100\ ft$

Now, plugging in 100 for 'd' and solving for 'x', we get:

$100=-4x^2+1100$

Adding -1100 both sides, we get:

$100-1100=-4x^2+1100-1100\\-1000=-4x^2$

Dividing both sides by -4, we get:

$\frac{4x^2}{4}=\frac{1000}{4}\\x^2=250$

Taking square root and neglecting the negative root as time can't be negative. So,

$\sqrt{x^2}=\sqrt{250}\\x=5\sqrt{10}=15.8\ s\approx 16\ s$

Therefore, after 16 seconds, the snowboarder will be at a distance of 100 ft from bottom of hill.

7 0

3 years ago

5 1/6 + -3 5/6 = ????

Serggg [28]

Answer:

1 1/3

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

3/7 p= -6<br> solve for p!<br> please help!

Stels [109]

Hello,

p = -6 * 7 / 3 = -14

8 0

3 years ago

Read 2 more answers

For each value of y, determine whether it is a solution to 12 = 2y +8.<br> Is it a solution

grin007 [14]

Answer: 2(0) + 8 does not equal 12, not a solution.

2(2) +8 = 12 yes it is a solution

2(-3) + 8 does not equal 12, not a solution

2(5) + 8 does not equal 12, not a solution.

Step-by-step explanation:

Looks like you need to plug in each y value given and multiplied by 2 and add 8

2(0) + 8 does not equal 12, not a solution.

2(2) +8 = 12 yes it is a solution

2(-3) + 8 does not equal 12, not a solution

2(5) + 8 does not equal 12, not a solution.

3 0

3 years ago