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bixtya [17]
3 years ago
5

I will give you guys 100 points if you help me for just these 5 questions please

Mathematics
2 answers:
Leto [7]3 years ago
7 0
Yea i yea yea i i yea yea
nignag [31]3 years ago
3 0

Remember that squaring something is just multiplying that number by itself.

55^2 = 55 \times 55 = 3025

95^2 = 95 \times 95 = 9025

75^2 = 75 \times 75 = 5625

45^2 = 45 \times 45 = 2025

35^2 = 35 \times 35 = 1225

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Find the smallest value of k such that 16k is a perfect cube.​
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Answer:

0

Step-by-step explanation:

The smallest perfect cube would be 0 since it cannot be negative and zero raised to the third power would still be 0

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System of quadratic <br><br> x² - y² = 4<br><br> x² + y² = 4
const2013 [10]

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Step-by-step explanation:

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What is 3.2 x 10^-8 expressed as a decimal?
aniked [119]

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3.2MULTIPLY10-8

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Which number is an irrational number?
babunello [35]

Answer:

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A) , it is rational

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D)  it is not rational.

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3 0
2 years ago
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(a) A lamp has two bulbs, each of a type with average lifetime 1400 hours. Assuming that we can model the probability of failure
Temka [501]

Answer:

For first lamp ; The resultant probability is 0.703

For both lamps; The resultant probability is 0.3614

Step-by-step explanation:

Let X be the lifetime hours of two bulbs

X∼exp(1/1400)

f(x)=1/1400e−1/1400x

P(X<x)=1−e−1/1400x

X∼exp⁡(1/1400)

f(x)=1/1400 e−1/1400x

P(X<x)=1−e−1/1400x

The probability that both of the lamp bulbs fail within 1700 hours is calculated below,

P(X≤1700)=1−e−1/1400×1700

=1−e−1.21=0.703

The resultant probability is 0.703

Let Y be a lifetime of another lamp two bulbs

Then the Z = X + Y will follow gamma distribution that is,

X+Y=Z∼gamma(2,1/1400)

2λZ∼

X+Y=Z∼gamma(2,1/1400)

2λZ∼χ2α2

The probability that both of the lamp bulbs fail within a total of 1700 hours is calculated below,

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P(χ24≤1.67)=0.3614

The resultant probability is 0.3614

8 0
2 years ago
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