3 years ago

Write the operation product of m and 2

Mathematics

1 answer:

alex41 [277]3 years ago

7 0

Answer: * or multiplication

Step-by-step explanation:

<u>Product</u>= multiplication

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A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimat

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Answer: a. n= 1068

b. n= 164

Step-by-step explanation:

The formula to find the sample size :

$n=p(1-p)(\dfrac{z^{*}}{E})^2$

, where p=prior population proportion , z* = critical z-value and E = Margin of error.

Here , let p=proportion of computers that use a new operating system.

Given : Confidence level = 95%

i.e. z* = 1.96 [by z-table]

Margin of error : E = 3% =0.03

a. If p is unknown , then we assume p=0.5

Then, $n=(0.5)(1-0.5)(\dfrac{1.96}{0.03})^2=1067.11111\approx1068$

i.e. n= 1068

b. p=0.96

Then, $n=(0.96)(1-0.96)(\dfrac{1.96}{0.03})^2=163.908266667\approx164$

i.e. n= 164.

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Barbara answered 72 questions correctly on her test. If her score on the test was 80%, how many questions were on the test?

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Answer is B - 90
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What is 6.83 as a mixed number

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It would be 6 83/100.

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Given the function f(x) = −2x2 4x − 7, find f(−4). −55 −7 9 25

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valentina_108 [34]

Answer:

LM=11

Step-by-step explanation:

LN= ML+MN

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4x+9=5x+7

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