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natita [175]
3 years ago
14

Prove that if x and y are rational numbers then 5x 2 − 7y is a rational number

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

It is a rational number

Step-by-step explanation:

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Rewrite using the distributive property 6(x + 3)
alekssr [168]

Answer: 6x+18

Step-by-step explanation: Because of the Distributive property, you would multiply the 6 by the’x’ and 3, as they are in the parenthesis.

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4 years ago
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Factoring expressions 9+36w
alexdok [17]

Answer:

9( 1 + 4w)

Step-by-step explanation:

So if you're simplifying then you need to find the greatest common factor. The GCF is 9.

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3 years ago
Help anyone can help me do this question,I will mark brainlest.​
lakkis [162]

Circumference of a circle = 2πr

So,

circumference = 2\pi \: r \\  =  > circumference = 2 \times  \frac{22}{7} \times  \frac{63 \: cm}{2}  \\  =  > circumference = 2 \times  \frac{11}{7} \times 63 \: cm \\  =  > circumference = 2 \times 11 \times 9 \: cm \\  =  > circumference = 198 \: cm

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3 years ago
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Help! Please! !!!!!!!!!!!!
asambeis [7]

Answer:

?

Step-by-step explanation: what is your question

5 0
2 years ago
: diameter of Circle P.<br><br><br><br> 1 = m 3 = 20°, then m =
posledela

The required value of Arc BC m = 140° Option B is correct.

Given that,
AD is the diameter of the circle,
∠1 = ∠3 = 20°
Arc BC is to be determined.


<h3>What is an arc?</h3>

Arc is the measure of angle on the circumference of circle.

Here,
∠1 = arc AB
∠3 = arc CD
Now, for circle p
Since angle 1 and angle 2 are equal to the composition of the arc,
Arc  AD = Arc AB + Arc BC + Arc CD = 180
20 + Arc BC + 20 = 180
Arc BC = 180 - 40

Arc BC = 140°

Thus, the required value of Arc BC m = 140° Option B is correct.

Learn more about arc here:

brainly.com/question/18741430

#SPJ1

3 0
1 year ago
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