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3 years ago

Multiply 1.78 and 1.3

Mathematics

2 answers:

Radda [10]3 years ago

5 0

Answer: 2.314 is your answer.

Step-by-step explanation:

Line up both numbers, then multiply each number from right to left. After, use the steps of multiplication to find your answer.

likoan [24]3 years ago

4 0

Answer:

2.314

Step-by-step explanation

When multiplying decimals forget the decimal points and multiply the whole numbers together.

178*13=2314

Then workout how many decimal places are there in the problem. In the above example there are three decimal places.

So in the answer there should also be three decimal places.

Now move the decimal point three places to the left to get your final answer.

2314=2.314

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Answer:

a) The calculated value t = 5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

b) p - value 0.00001

The p - value 0.00001 < 0.01

The result is significant at p<0.01

Step-by-step explanation:

Step(i):-

Given mean of the population = 10

Sample size 'n'= 35

Mean of the sample x⁻ = 14.44

Standard deviation of the sample 's' = 4.45

Level of significance ∝ = 0.01

Step(ii):-

Null Hypothesis H₀ : μ >10

Alternative Hypothesis : H₁ : μ < 10

Test statistic

$t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }$

$t = \frac{14.44-10}{\frac{4.45}{\sqrt{35} } }$

t = 5.903

Degrees of freedom = n-1 = 35-1 = 34

tabulated value t₀.₀₁,₃₄ = 2.572

The calculated value t = 5.903 > 2.572 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is a true mean value is less than 10

p- value :

p - value 0.00001

The p - value 0.00001 < 0.01

The result is significant at p<0.01

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3 years ago

jeremy drew a polygon with four right angles and four sides with the same length.what kind of polygon did jeremy draw?

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Last year Andrea's annual salary was A dollars and she was paid biweekly. This year she received a

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Biweekly salary last year algebraically will be S = (27)A. Semimonthly salary this year algebraically will be S = ( A + R )6.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that Last year, Andrea's annual salary was A dollar and she was paid biweekly. This year she received a raise of R dollars per year. She is now paid semimonthly.

Biweekly salary last year algebraically will be:-

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Semimonthly salary this year algebraically will be:-

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Therefore, the biweekly salary last year algebraically will be S = (27)A. Semimonthly salary this year algebraically will be S = ( A + R )6.

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