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eimsori [14]
2 years ago
11

18 divide by 2 * 3/5-2 simplify show all work

Mathematics
2 answers:
liraira [26]2 years ago
6 0

Answer:

9

Step-by-step explanation:

I would guess it looks like this - if not then tell me

\frac{18}{ \frac{2 \times 3}{5 - 2} }

2×3=6

5-2=3

Then there's only

\frac{18}{ \frac{6}{3} }

Which is equal to

\frac{18}{1}  \times  \frac{3}{6}  =  \frac{54}{6}  =  \frac{9}{1}  = 9

Ne4ueva [31]2 years ago
6 0

Answer:

  • 9 or 3 2/5

Step-by-step explanation:

There are two scenarios, (5 - 2) in denominator and 5 in denominator as it is not clear. Solving both:

  • 18/2*3/(5 - 2) =
  • 9*3/3 =
  • 9*1 =
  • 9

------------------------

  • 18/2*3/5 - 2 =
  • 9*3/5 - 2=
  • 27/5 - 2 =
  • 17/5 =
  • 3 2/5
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p-r=q/4

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Step-by-step explanation:

The area is the product of the height and width. For this exercise, it is convenient to compute the rectangle areas individually, then write their sum:

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Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 2010, the concentrati
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Answer:

The p-value obtained from the hypothesis test is greater than the significance level at which the test was performed, hence, we fail to reject the null hypothesis & say that there isn't enough evidence from the sample to conclude that the the calcium concentrations have changed since 2010.

Step-by-step explanation:

To perform this test, we need to first obtain the sample mean and sample standard deviation.

The data is 0.065 0.087 0.070 0.262 0.126 0.183 0.120 0.234 0.313 0.108

Mean = (sum of variables)/(sample size)

= (0.065+0.087+0.070+0.262+0.126+0.183+0.120+0.234+0.313+0.108)/10

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Standard deviation = σ = √[Σ(x - xbar)²/N]

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= 0.0676296

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To do an hypothesis test, we need to first define the null and alternative hypothesis

The null hypothesis plays the devil's advocate and usually takes the form of the opposite of the theory to be tested. It usually contains the signs =, ≤ and ≥ depending on the directions of the test.

While, the alternative hypothesis usually confirms the the theory being tested by the experimental setup. It usually contains the signs ≠, < and > depending on the directions of the test.

For this question, the null hypothesis would be that there is no significant evidence to suggest that the the calcium concentrations have changed since 2010. That is, the calcium concentrations haven't changed since 2010.

The alternative hypothesis is that there is significant evidence to suggest that the the calcium concentrations have changed since 2010. That is, the calcium concentrations haven't changed since 2010.

Mathematically,

The null hypothesis is represented as

H₀: μ = 0.11 milligrams per liter

The alternative hypothesis is given as

Hₐ: μ ≠ 0.11 milligrams per liter

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So, we compute the t-test statistic

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where n = Sample size = 10

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σₓ = (σ/√n) = (0.08224/√10) = 0.026

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checking the tables for the p-value of this t-statistic

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So, for this question, significance level = 0.05

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This means that we fail to reject the null hypothesis & say that there isn't enough evidence to conclude that the the calcium concentrations have changed since 2010.

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