3 years ago

34/14 = x/7 I need help with this its last minute.

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

6 0

Answer:

x = 17

Step-by-step explanation:

Assuming you are solving for x...

34/14 = x/7

The goal is to get x on one side of the equation with nothing else.

The multiplication property of equality states that the equation remains the same if we multiply both sides by the same amount so:

(34/14) * 7 =( x/7) * 7

This simplifies to:

34/2 = x

Which can be simplified even further to:

17 = x

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32 ^^ I really hope this is right and helps xD

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3 years ago

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1. (Sec. 6.1) In a random sample of 80 components of a certain type, 12 are found to be defective. (a) Give a point estimate for

denis-greek [22]

Answer:

(a) 0.85

(b) 0.7225

Step-by-step explanation:

(a) The point estimate for the proportion of all such components that are not defective is given by the number of non-defective units in the sample divided by the sample size:

$p=\frac{80-12}{80}\\p=0.85$

The proportion is 0.85.

(b) Assuming that the sample is large enough to accurately provide a point estimate for the whole population, this can be treated as a binomial model with probability of success (non-defective part) p = 0.85. Since both components must be non-defective for the system to work, the probability of two successes in two trials is:

$P(x=2) = 0.85^2\\P(x=2) = 0.7225$