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3 years ago

The square root of 72 is between which two whole numbers?

Mathematics

2 answers:

Nina [5.8K]3 years ago

8 0

Answer:

The answer is D

Step-by-step explanation:

boyakko [2]3 years ago

4 0

D- sqrt72 is between two perfect squares: sqrt64 and sqrt81 which equal 8 and 9 respectively. This allows us to assume that sqrt72 is between 8 and 9 becuz 72 is between 64 and 81. Hope this helps!

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Plz help! I will mark brainliest and 5 stars to whoever answers both questions correctly!!!

kvasek [131]

1) The relative frequency of spinning a 6 would be 7/50 OR 14%.

2) There are 45 tiles expected t be vowels.

6 0

3 years ago

Problem PageQuestion Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. I

SIZIF [17.4K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The calcium level that is the borderline between low calcium levels and those not considered low is $c = 8.68$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 9.5\ mg/dL$

The standard deviation $\sigma = 0.5 \ mg/dL$

The proportion of the population with low calcium level is $p =$ 5% = 0.05

Let X be a X random calcium level

Now the P(X < c) = 0.05

Here P denotes probability

c is population with calcium level at the borderline

Since the calcium level is normally distributed the z-value is evaluated as

$P(Z < \frac{c - \mu}{\sigma } ) = 0.05$

The critical value for 0.05 from the standard normal distribution table is

$t_{0.05} = -1.645$

=> $\frac{c - \mu}{\sigma } = -1.645$

substituting values

$\frac{c - 9.5}{0.5 } = -1.645$

=> $c - 9.5 = -0.8225$

=> $c = 8.68$

6 0

4 years ago

The scatterplot shows the relationship between the number of slices of pizza eaten by each member of a football team (x) and the

ivolga24 [154]

Answer:

5.31

Step-by-step explanation:

Given the regression line equation, $y = 10 - 0.67x$ , where,

x = number of slices of pizza eaten

y = number of laps run immediately

Number of laps run by a player who ate 7 slices of pizza can be predicted by plugging in x = 7 into the regression line equation to find y:

$y = 10 - 0.67x$

$y = 10 - 0.67(7)$

$y = 10 - 4.69$

$y = 5.31$

5 0

3 years ago

The sales tax on a surfboard is 12$ .what is the percent of sales tax

sashaice [31]

It will be 12% because if you have 0.12 and you move the decimal 2 spots it will give you 12% try it when you have to turn a decimal into a percent.

8 0

3 years ago

An 18 in long rebar is driven into the ground until it touches an underground pipe. A backsight to a benchmark with an elevation

WARRIOR [948]

Answer:

398.71 ft

Step-by-step explanation:

Length of rebar = 18 inches = 1.5 ft

Elevation = 393.66 ft

Reading of backsight on Benchmark= 7.56 ft

Rod reading = 1.10 ft

<em>First step : determine height of Instrument been used</em>

= elevation + backsight on Benchmark

= 393.66 + 7.56 = 401.22 ft

<em>Elevation of top of rebar </em>

= 401.22 - 1.01 = 400.21 ft

Finally determine the elevation of the top of the pipe

= 400.21 - length of Bar

= 400.21 - 1.5 = 398.71 ft

6 0

3 years ago