2 years ago

Find equivalent expressions for 2y + 7 - 5y + 6y - 3+ y.

Mathematics

1 answer:

madam [21]2 years ago

7 0

The answer is 4y + 4 or 4 • (y+1)

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Try to prove the hypothesis from part B that the sum of a rational and an irrational number is an irrational number.

Maurinko [17]

The next step of your proof is to subtract (a/b) from both sides.

Then you get, x = (m/n) - (a/b)

Since rationals are closed over addition, (m/n) + (-a/b) is a rational number.

Therefore, x (an irrational number) = a rational number This is a false statement which is a contradiction. So, the assumption was incorrect.

Thus, the sum of a rational and irrational number is an irrational number. QED

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3 years ago

The circumference of a circle is 138.16 centimeters. What is the area of the circle?

vodomira [7]

Circumference formula tells you $C=2 \pi r$

 $C=2 \pi r$
 $138.16=2 \pi r$
 $21.99= r$
 $r=21.99cm$ 
The formula to find the area of a circle is $A= \pi r^2$

 $A= \pi r^2$
 $A= \pi (21.99)^2$
 $A= \pi (483.56)$
 $A= 1519cm^2$

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3 years ago

An ice cream shop uses 4 pints of ice cream to make 6 sundaes. The same amount of ice cream was used for each sundae. How many p

lawyer [7]

Answer:

1.5 pints per sundae

Step-by-step explanation:

5 0

3 years ago

Jamal wrote that 9 – 8.4 = 6.

stepan [7]

9−8.4=6

0.6≠6

False

I don't know...

6 0

2 years ago

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Right answer i will give brainliest

Xelga [282]

Answer:

B and C

Step-by-step explanation:

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3 years ago

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