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Zanzabum
3 years ago
9

Evaluate each expression if x=-2,y=-3and z=5. 2x+3y+z?

Mathematics
1 answer:
maw [93]3 years ago
7 0

Answer:

Step-by-step explanation:

Substitute the variable with the number

2(-2) + 3(-3) + 5

-4 - 9 + 5

-13 + 5 = -8

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1/6 + 3/4 rational numbers
mamaluj [8]

Answer: three rational numbers between 3/4 and 1/6 are

1/4

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Step-by-step explanation:

equalize the denominators by lcm

therefore you will get 9/12 and 3/12

take any three numbers between them and reduce them to the lowest fraction possible.

   

                                Mr. Uzumaki

3 0
2 years ago
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masha68 [24]

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Step-by-step explanation:

4 0
2 years ago
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katrin [286]

Answer:

0

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4 0
3 years ago
A grower believes that one in five of his citrus trees are infected with the citrus red mite. How large a sample should be taken
kotegsom [21]

Answer: 68

Step-by-step explanation:

Formula for sample size when prior estimate of population proportion (p) is available:  n=p(1-p)(\dfrac{z^*}{E})^2

, where z*= critical-value.

E= Margin of error.

Let p be the population proportion of  trees are infected with the citrus red mite.

As per given , we have

p=\dfrac{1}{5}=0.2

E= ± 0.08

The critical z-value corresponding to 90% confidence level = z*=1.645

Substitute all the values in the above formula , we get

Required sample size  :n=(0.2)(1-0.2)(\dfrac{(1.645)}{0.08})^2

\Rightarrow\ n=(0.2)(0.8)(20.5625)^2

\Rightarrow\ n=0.16(422.81640625)\\\\\Rightarrow\ n=67.650625\approx68 [Rounded to next integer.]

Thus, the minimum sample size should be taken =68

6 0
3 years ago
What is the X intercept and Y intercept of this graph
s2008m [1.1K]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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