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mote1985 [20]
3 years ago
14

Moria multiplies 1.8 by 2.4 and writes the product as 0.432. Tom says that her product is incorrect. How could Tom know this wit

hout multiplying the two numbers
Mathematics
1 answer:
Makovka662 [10]3 years ago
6 0
Tom could know this because when multiplying two numbers that have decimals the decimal place in the answer will always have the same number of decimal places  as the sum of the decimal places in the multiplied numbers. 
sorry if this is too wordy for you. Hoped this helped you out though!
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If 0 < b ≤ 90 and cos(11b + 2) = sin(12b − 4), what is the value of b?
Elza [17]

Answer:

b = 4

Step-by-step explanation:

The given expression is

Cos (11b + 2) = Sin (12b - 4)

Since, Sin(θ) = Cos(90 - θ)

Therefore, Cos (11b + 2) = Cos [90 - (12b - 4)]

Where 0 < b ≤ 90°

11b + 2 = 90 - (12b - 4)

11b + 2 = 94 - 12b

11b + 12b + 2 = 94 - 12b + 12b

11b + 12b + 2 - 2 = 94 - 2

23b = 92

\frac{23b}{23}=\frac{92}{23}

b = 4

Therefore, b = 4 will be the answer.

7 0
3 years ago
Read 2 more answers
Suppose a food scientist wants to determine whether two experimental preservatives result in different mean shelf lives for bana
melomori [17]

Answer:

The two sample t-test

Step-by-step explanation:

The appropriate test for thus is the two sample t test which is also known as the independent t test. This tests aims at determined whether there is a statistically significant difference between the means in two unrelated groups which in this context are a random sample with one type of preservative and another sample with another type of preservatives.

With this test, the researcher is able to compare the mean shelf lives of the bananas treated with the two different preservatives... The null hypothesis equalises the two means of the sample while the alternative does otherwise.

3 0
3 years ago
Help will give crown
IrinaVladis [17]

Answer:

the answer of the question is C because 1/2=.5

5 0
3 years ago
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What is the smallest prime number that can be written as the sum of three different prime
snow_tiger [21]
Prime numbers 2,3,5,7,11,13,17,19,23
so 2+3+5=10 no
3+5+7=15 no
3+5+11=19 Yes this is your answer

4 0
3 years ago
What is the value of x in the equation 1,331x with the exponent of 3 -216 =0
dimulka [17.4K]
The answer is x=6/11.
Tiger Algebra is a really good tool for algebra if you need some help.
Hope that helped! :)
4 0
3 years ago
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