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love history [14]

3 years ago

13

Jeff helped repair one half of the bicycles in a bike shop last week. If jeff worked on 5 bicycle, how many bicycles did the sho

p repair last week ?

1 answer:

denpristay [2]3 years ago

7 0

The answer would be 10.

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Dale drove 845 miles in 13 hours. at the same rate, how long would it take him to drive 585 miles?

vladimir1956 [14]

9 hours because you have to see how many miles he drove pre hour.

5 0

3 years ago

These cones are similar. find the volume of the smaller cone. round to the nearest tenth.

Kamila [148]

Answer:

Volume of the smaller cone = 8.34 cm³

Step-by-step explanation:

"If two figures are similar, their dimensions will be proportional.

Following this rule,

Ratio of the dimensions of two cones = $\frac{\text{Radius of the large cone}}{\text{Radius of the small cone}}$

= $\frac{r_2}{r_1}$

= $\frac{5}{2}$

= 2.5

Similarly, "ratio of the volumes of two similar figures is cube of the dimensional ratio".

Ratio of the volumes = (ratio of the dimensions)³

$\frac{V_1}{V_2}=(2.5)^3$

$\frac{131}{V_2}=15.625$

$V_2=\frac{131}{15.625}$

= 8.384 cm³

≈ 8.4 cm³

Therefore, volume of the smaller cone is 8.4 cm³.

8 0

3 years ago

A square has a perimeter of 39.6 millimeters. What is the length of each side?

garri49 [273]

Answer:

9.9 millimeters

Step-by-step explanation:

To find the perimeter of a square,

Equation: 4 • length = P

So in this case, we're just working backwards. To find the length, divide.

39.6/4 = 9.9

3 0

2 years ago

Read 2 more answers

Researchers found a linear relationship between tail-feather length (in mm) and weight (in g) in a random sample of 20 male long

Dafna11 [192]

Answer:

Step-by-step explanation:

As far as I know, this question is not correct. I have the searched the internet and found a similar question which makes sense. In the correct question, 95% Confidence Interval is already given calculated from the software and

<em>95% prediction interval is asked (PI) for the weight of one male long tailed finch weighing 20 g.</em>

We have this data given in the correct question found on internet. And they have calculated this data using software:

New Obs = 20

Fit = 92.34

SE Fit = 5.26

95% Confidence Interval = (81.29, 103.38)

95% Prediction Interval = (67.61, 117.06)

Now, Just look at the prediction interval:

Now the formula for Prediction Interval = Point Estimate ± Margin of Error

Upper limit for prediction interval = 117.06

lower limit = 67.61

Formula for point estimate = (Upper + Lower)/2

Point Estimate = (117.06 + 67.61)/2

Point Estimate = 92.34

Formula for margin of error = (Upper - Lower)/2

Margin of Error = (117.06 - 67.61)/2

Margin of Error = 24.72

Formula for Prediction Interval = Point Estimate ± Margin of Error

PI = 92.34 ± 24.72

4 0

3 years ago

The three angles of a triangle measure x+37, 90, and x+67. Find the measurement of the smallest angle in degrees.

Kisachek [45]

Step-by-step explanation:

so the smallest angle is angle A which is 30 degree

7 0

3 years ago

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