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3 years ago

Plse ans anyone plse

Mathematics

2 answers:

Ratling [72]3 years ago

8 0

(a+b)^3 = a^3+b^3+3ab(a+b)
(a+b)^3 = (-1)^3

zubka84 [21]3 years ago

4 0

Step-by-step explanation:

(a+b)^3=a^3+b^3+ab^3

(a+b)^3=a^3+b^3=>(-1)^3=-1

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If y varies inversely as x and y is 6 when x is 12, what is x when y is 14. 4? a. 5 b. 0. 4 c. 9. 6 d. 2. 5.

krok68 [10]

The value of x when y is 14.4 is 5.

It is given that

y ∝ 1/x

y = k/x....(1)

Where k is a constant of proportionality

<h3>What is the constant of proportionality?</h3>

The constant of proportionality is the ratio that relates two given values.

When y =6, x=12

Means, 6 = k/12

k = 72

Putting the value of k in equation (1)

y = 72/ x

14.4 = 72/ x

x = 5

Therefore, The value of x when y is 14.4 is 5.

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2 years ago

Y=3x+1 on a table graph

fgiga [73]

Step-by-step explanation:

Use a Table of Values to Graph the Equation y =3x+1. y=3x+1 y = 3 x + 1. Substitute −2 - 2 for x x and find the result for y y . y=3(−2)+1 y

3 0

3 years ago

Is √6/8. rational or irrational?

Ipatiy [6.2K]

<h2>Answer:</h2>

The number is irrational.

<h2>Step-by-step explanation:</h2>

<h3>1. Convert to decimal.</h3>

$\sqrt{\frac{6}{8} } =\sqrt{0.75} =0.8660254038...$

<h3>2. Conclude.</h3>

Since this number shows to have infinite decimal figures, it cannot be represented as the ratio of 2 integers. Hence, the number is irrational.

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Note. In case the number expressed in the question was $\frac{\sqrt{6} }{8}$ , the answer would still be irrational, for the same reasons explained above.

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2 years ago

A birthday cake was cut into equal pieces, and four pieces were eaten. The fraction below shows how many pieces were left. Accor

zmey [24]

4 were not eaten from the cake

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3 years ago

8 meters increased by 25 percent

damaskus [11]

8 meters increased by 25 : (8 + 25) = 33 meters

=========================================

If you really meant to say "increased by 25 percent" . . .

25 percent means 0.25

0.25 x 8 = 2 <== that's the increase

8 + 2 = 10 meters

7 0

3 years ago