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3 years ago

Solve for x and y: x+y=5 x−y=a

Mathematics

1 answer:

9966 [12]3 years ago

5 0

Answer:

x=5/2 + a/2, y= 5/2 - a/2

Step-by-step explanation:

We can solve this system using addition of the equations

x+y=5

x-y=a

2x =(5+a)

x=(5+a)/2= 5/2 +a/2

x=5/2 +a/2

x-y=a

y = x - a , x=5/2 + a/2

y= 5/2 + a/2-a

y= 5/2 - a/2

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Someone answer urgent and if so I will mark brainliest

krok68 [10]

Answer:

B is the correct answer

Step-by-step explanation:

A. is wrong because 3/8 would shrink the circle, not expand it.

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3 years ago

Please help. I’ll mark you as brainliest if correct!

erica [24]

Step-by-step explanation:

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3 years ago

You are recreating a scale drawing at a different scale. The original scale is 1 cm : 8 m. The new scale is 1 cm : 2 m. In the o

densk [106]

Answer:

The segment should be 36 centimeters long

Step-by-step explanation:

Let us use the ratio method to solve the question

∵ The original scale is 1 cm : 8 m

∵ In the original drawing, the length of a segment is 9 centimeters

→ By using the ratio method

→ cm : m

→ 1 : 8

→ 9 : x

→ By using the cross multiplication

∵ 1 × x = 9 × 8

∴ x = 72 m

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∵ The new scale is 1 cm : 2 m

∵ The actual length of the segment is 72 m

→ By using the ratio method

→ cm : m

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→ y : 72

→ By using the cross multiplication

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∴ 2y = 72

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3 years ago

Is 1/2 greater than 2/8

kifflom [539]

Yes, because 2/8 simplified is 1/4.

1/2 > 1/4

8 0

3 years ago

Read 2 more answers

Y raise to power 1/2 =3

marta [7]

Answer:

y = root 9

Step-by-step explanation:

1/2 is equivalent to the root of something.

The root of y equals 3.

Therefore, y would be equal to root 9, as root 9 is equivalent to 3.

Hope this helps :)

6 0

2 years ago

Read 2 more answers