2 years ago

Which property explains why these two expressions are equal? 7 + q + 4 = 4 + 7 + q

Mathematics

1 answer:

Doss [256]2 years ago

5 0

Commutative property, the order in adding or multiplying does not matter

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Angles X and Y are supplementary. Angle X is 3 times the measure of angle Y. What is the measure of angle X?

never [62]

Answer:

∠ Y = 45°, ∠ X = 135°

Step-by-step explanation:

Since the 2 angles are supplementary, then

X + Y = 180 ← substitute X = 3Y

3Y + Y = 180, that is

4Y = 180 ( divide both sides by 4 )

Y = 45

and

X + Y = 180, so

X + 45 = 180 ( subtract 45 from both sides )

X = 135

Thus

∠ X = 135° and ∠ Y = 45°

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3 years ago

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Lana71 [14]

Answer:

$\displaystyle 23$

Step-by-step explanation:

$\displaystyle 4p = p + 69 → -69 = -3p; 23 = p$

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3 years ago

Jean wrote two correct variable expressions to represent the phrase “the quotient of a number and 3.” Which variable expressions

ioda

The answer should be c

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Using the drawing, if the measure of angle 2 is 42° and the measure of angle 3 is 52°, what is the measure of angle 6?

Anarel [89]

The answer is D. 94°

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How can a rational number and irrational number when multiplied together make a irrational number ?

pochemuha

Answer:

"The product of a rational number and an irrational number is SOMETIMES irrational." If you multiply any irrational number by the rational number zero, the result will be zero, which is rational. Any other situation, however, of a rational times an irrational will be irrational

A better statement would be:

"The product of a non-zero rational number and an irrational number is irrational

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