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4 years ago

Solving systems of equations algebraically.

1 answer:

7 0

Start with x=y+13 then plug it in so you get 4(y+13) + 2y = 10
Then you get 4y + 52 +2y =10
Then you add you similarities to get 6y + 52= 10
Subtract 52 from both sides gets you 6y=-42. Then you divide and you get y=-7.
Then you plug that into your original equation so 4x + 2(-7) = 10
4x + -14 = 10
4x = 24
X= 6
Y= -7

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How many feet long 72 inches

jarptica [38.1K]

You need to know how many inches are in 1 foot.

1 foot / 12 inches

There are 12 inches in 1 foot. So...

72 inches <span>× 1 foot / 12 inches

72/12 = 6 feet

There is your answer.

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3 0

3 years ago

Nyali paid $62 for a bicycle. She sold it later for $46.<br> What was her percentage loss?

Alex

25.8064

Step-by-step explanation:

when sold is 62$

lost is 100 percentage

nyali sold 46$ lost price is 16$

The lost is _____

16×100/62=25.8064

4 0

4 years ago

Read 2 more answers

Tania measured the growth of her plant each week. The firstt week, the plant's height measured 2.65 Decimeters. During the secon

Evgesh-ka [11]

Answer:

3.35 decimeter.

Step-by-step explanation:

We have been given that the first week, the plant's height measured 2.65 Decimeters. During the second week, Tania''s plant grew 0.7 Decimeter.

To find the height of Tania's plant at the end of second we will add 0.7 to 2.65.

$\text{The length of Tania's plant at the end of 2nd week}=2.65+0.7$

$\text{The length of Tania's plant at the end of 2nd week}=3.35$

Therefore, Tania's plant was 3.35 decimeter tall at the end of 2nd week

3 0

3 years ago

What is the median 7 0 1 3 1 4 9 0

MrRa [10]

Answer:

The median is 2

Step-by-step explanation:

7 0 1 3 1 4 9 0

Arrange the numbers in order from smallest to largest

0 0 1 1 3 4 7 9

The median is the middle number

0 0 1 1 3 4 7 9

It is between 1 and 3, so average 1 and 3

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

6 0

3 years ago

A 9.0 ladder rests against the side of a wall. The bottom of the ladder is 1.5 meters from the base of the wall. Determine the m

maria [59]

Well we know that the 9.0 meter ladder is the hypotenuse And it is a right triangle with base of 1.5 meters. we have the adjacent and the hypotenuse. which is cosine. So:
cos (a) = adjacent/hypotenuse
cos (a) = 1.5/9.0
cos (a) = 1 / 6
a = cos^-1 (1 / 6)
a = 80.4 degrees

8 0

4 years ago