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4 years ago

Algebra2 |2-3(2w+1)=7w-3(7+w)

1 answer:

5 0

I believe your answer is -220w-22 2-3(2w+1)=7w-3(7+w) +7w -7w 2-3(9w+1)=-3(7+w) +w -w 2-3(10w+1)=-3(7) 2-3(10w+1)=-21 -1(10w+1=-21 -21 +21 -22(10w+1) -220w-22

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Which properties justify the steps taken to solve the system? {3x−4y=9 2x+8y=6

nevsk [136]

The properties that justify the steps taken to solve the given system are as follows:

6x – 8y = 18, 2x + 8y = 6

[Multiplication property of equality]

8x = 24

[Addition property of equality]

x = 3

[Division property of equality]

3(3) – 4y = 9

[Substitution property of equality]

9 – 4y = 9

[Simplify]

-4y = 0

[Subtraction property of equality]

y = 0

[Division property of equality]

3 0

3 years ago

Suppose Q and Rare independent events. Find P(Q and R) if P(Q)= 7/15 and P(R)= 4/7.

VikaD [51]

Answer:

4/15

Step-by-step explanation:

Independent events:

P(Q and R) = P(Q)×P(R)

P(Q and R) = 7/15 × 4/7

p(Q and R) = 4/15

I hope I've helped you.

6 0

3 years ago

Change each to an Improper Fraction

zloy xaker [14]

Answer:

31/7

11/7

67/9

Step-by-step explanation:

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2 years ago

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AlexFokin [52]

Answer:

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Step-by-step explanation:

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3 years ago

Sydney wants to use a 10-ft ladder to get to a window 8 feet above the ground. At what angle with the ground does the ladder nee

slamgirl [31]

Answer:

The angle is 53.13 degrees

Step-by-step explanation:

In this question, we are to calculate the angle to which a ladder is to be set to get to a window.

Now, looking at this, we can picture a triangle where the length of the ladder represents the the hypotenuse while the angle we are considering makes the height of the room from the floor.

Please check attachment for picture of triangle

Since we are considering the hypotenuse and the opposite, the mathematical term we would be using is the sine.

Sine of an angle = length of opposite/length of hypotenuse

Sine angle = 8/10

since angle = 8/10

angle = arc sin 0.8

angle = 53.13 degrees

6 0

3 years ago