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Art [367]
3 years ago
14

Monica estimates the recipe makes about 5 cups of fruit salad. Which explanation describes whether Monica's estimate is reasonab

le?
A Not reasonable. Four fractions cannot equal more than 4 cups.
B) Not reasonable. The whole numbers add up to 3 so the total sum cannot be 5 cups.
C с Reasonable. The grapes and apples is about 2 cups and pears and oranges is exactly 3 cups.
D Reasonable. The pears and apples is about 3 cups and the grapes and oranges is exactly 2 cups.​
Mathematics
1 answer:
Darya [45]3 years ago
5 0

Answer:

A.

Step-by-step explanation:

Not reasonable, Why did you put that as your answer?

The whole numbers add up to more then 4 cups.

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A researcher is planning to compare the effects of two different types of lights on the growth of bean plants. She expects that
kicyunya [14]

Answer:

The sample size is  n  = 36

Step-by-step explanation:

From the question we are told that

   The sample standard deviation is  s =  1.5

  The mean difference of the two groups is  \=x _ 1 - \=x_2 =  1

   The standard error is  SE =  \frac{ \= x_1 - \= x_2}{4}

=>                                      SE =  \frac{1}{4}

Let assume that the confidence level is 95% hence the level of significance is  

   \alpha = (100-95)\%

=> \alpha = 0.05

So the critical value of  \frac{\alpha }{2} obtained from the normal distribution table is

     Z_{\frac{\alpha }{2} } = 1.96

Generally the margin of error is mathematically evaluated as

     E =  Z_{\frac{\alpha }{2} } * SE    

   E =  1.96 * \frac{1}{4}

    E = 0.49

Generally the sample size is mathematically represented as

  n =[ \frac{Z_{\frac{\alpha }{2}  * s^2}}{E}]^2

=> n  = [\frac{1.96 * 1.5}{0.49} ]^2

=> n  = 36

6 0
3 years ago
Im confused can somebody help me please
ivann1987 [24]

well, we know the piece-wise function is f(x)= \begin{cases} 7x+10&x < 0\\\\ 7x+20&x\geqslant 0 \end{cases}

hmmm so what's f(-1), namely what is f(x) when x = -1?

well, when x = -1, hmm -1 is less than 0, so the subfunction that applies to that will be when "x" is less than 0, namely the part of 7x + 10, so we can say

f(-1) = 7(-1) + 10

f(-1) = 3

so hmm what's f(0) or namely, what's f(x) when x = 0?

well, what subfunction applies when x = 0? well, it has to be the subfunction with "x greater or <u>equals</u> to 0", x ⩾ 0, so then is 7x + 20

f(0) = 7(0) + 20

f(0) = 20.

6 0
2 years ago
Pls use long division!!!
seropon [69]

2x-5 ................

3 0
2 years ago
What are the relative minimum and relative maximum values over the interval [−4, 4] for the function shown in the graph?
navik [9.2K]

A relative minimum = −36 , relative maximum = 64

3 0
2 years ago
Read 2 more answers
What is 1 3/4 in decmial form
Tasya [4]

Answer:

1.75

Step-by-step explanation:

think of it like quarters

3 0
3 years ago
Read 2 more answers
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