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4 years ago

I need help how to round up to the nearest tenth

Mathematics

1 answer:

Valentin [98]4 years ago

4 0

Answer:

You just take the hundredths place and then round up if its 5 or above. I'll show you some examples.

Step-by-step explanation:

Tenths Rounding:

29.45 rounded is 29.5

25.42 rounded is 25.4

56.48 rounded is 56.5

2.35 rounded is 2.4

You should be able to kinda read through and get the pattern

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A group of engineers developed a new design for a steel cable. They need to estimate the amount of weight the cable can hold. Th

Tasya [4]

Answer:

At 90% confidence interval, the estimate of the mean breaking weight is (770.45, 778.15)

Step-by-step explanation:

Given that:

sample size n =43

sample mean x = 774.3

standard deviation = 15.4

confidence interval = 90%

At C.I of 90% , the level of significance ∝ = 1 - C.I

the level of significance ∝ = 1 - 0.90

the level of significance ∝ = 0.10

The critical value for z at this level of significance is $z_{\alpha/2} = z_{0.10/2}$

$z_{0.05}$ = 1.64

The margin of error can be computed as follows:

Margin of error = $\mathtt{z_{\alpha/2} \times \dfrac{\sigma}{\sqrt{n}}}$

Margin of error = $\mathtt{1.64 \times \dfrac{15.4}{\sqrt{43}}}$

Margin of error = $\mathtt{1.64 \times \dfrac{15.4}{6.5574}}$

Margin of error = $\mathtt{1.64 \times2.3485}$

Margin of error = 3.8515

The mean breaking weight for the 90% confidence interval is = $\mathtt{\overline x \pm E < \mu }$

= $\mathtt{\overline x - E < \mu < \overline x + E}$

= ( 774.3 - 3.8515 < μ < 774.3 + 3.8515 )

= (770.4485, 778.1515)

$\simeq$ (770.45, 778.15)

4 0

3 years ago

In Mr. Quad’s PE class, 48 out of 50 students dressed out. Use one of the three forms of ratios to represents the ratio of stude

natali 33 [55]

The answer is 2:50. 2 people didnt dress out, & there are 50 total students.

5 0

3 years ago

Read 2 more answers

What is −4 1/3 ÷( −2 3/5)

raketka [301]

Answer:

5/3

1.6

Step-by-step explanation:

mixed number from: 1 2/4

3 0

3 years ago

Read 2 more answers

PLS HELP ME I WILL GUVE YOU BRAINLIST AND A THANK YOU!!!!!

Vlad [161]

Answer: 35

Step-by-step explanation:

If you take the three angles shown, it's total is 180

So take the two angles you know, and subtract them from 180

Now we have 100 left, and we can subtract 30 to be left with 2x.

Now divide what is left by two, which is 70

70/2=35

3 0

4 years ago

Read 2 more answers

Results of a random survey showed that 15 out of 25 students plan to vote for Stacy for class

Alexandra [31]

165 votes

So we know that there would be 225 votes.

Explanation:

225 divide 25=11

Then lastly multiply 15 with 11.

Final Result: 165 votes

5 0

3 years ago