•shopping
•calorie counting
•cooking
•painting your house (mixing colors)
•driving from place to place
•weather
That's all I can think of
If 
, the value of a and b is given as a = 34 and b = 0
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables or numbers.
If , the value of a and b is given as a = 34 and b = 0
Find out more on equation at: brainly.com/question/2972832
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30 is 20% of 150
Working out percentage problems of the form "30 is 20 percent of what number?"
We have, 20% × x = 30
or,
20/100 × x = 30
Multiplying both sides by 100 and dividing both sides by 20,
we have x = 30 × 100/20
x = 150
If you are using a calculator, simply enter 30×100÷20, which will give you the answer.
Answer:
a) P value = 0.0013
b) No, it is not plausible that the silicon content of the water is no greater than it was 10 years ago
Step-by-step explanation:
The null hypothesis here is “Mean is equal to 5” while alternate hypothesis is that “Mean is greater than 5”
Given
Mean = 5, x’ = 5.4 and sigma = 1.2 and n = 85
Z = x-u’/sigma/sqrt n
Substituting the given values, we get –
Z = 3.02
A) P value = 0.0013 which is less than 0.05 and thus we will reject the null hypothesis
B) There is enough evidence to reject the null hypothesis
Answer:
1. -9
2. -15
Step-by-step explanation:
Reduce the expression, if possible, by cancelling the common factors.
