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Galina-37 [17]
3 years ago
7

Solve for variable: 5z/8 – 1/3 = 2/5

Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0

Answer: z= .6

Step-by-step explanation:

Numerator: When you do 5•.6, you get 3, and then 3-1 equals 2.

Denominator: 8 - 3 = 5.

Therefore you get 2/5 which makes z = .6

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the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas
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Answer:

0.67 cm/s

Step-by-step explanation:

The area of a square is given by :

A=x^2 ....(1)

Where

x is the side of a square

\dfrac{dA}{dt}=12\ cm^2/s

Differentiating equation (1) wrt t.

\dfrac{dA}{dt}=2x\times \dfrac{dx}{dt}

When A = 81cm²​, the side of the square, x = 9 cm

Put all the values,

12=2\times 9\times \dfrac{dx}{dt}\\\\\dfrac{dx}{dt}=\dfrac{2}{3}\\\\\dfrac{dx}{dt}=0.67\ cm/s

So, the length of the side of a square is changing at the rate of 0.67 cm/s.

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A triangle has one 90-degree angle and one 38.7 - degree angle. What is the measure of the third angle?
tigry1 [53]
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3 years ago
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Y_Kistochka [10]

Answer:

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Step-by-step explanation:

The correct option is;

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A or B cannot be null.

check

A = {2,3,4}

B = {}

Au B = {2,3,4}

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