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2 years ago

Find FD if the building is 75 feet tall. Round your answer to the nearest tenth

Mathematics

2 answers:

atroni [7]2 years ago

5 0

If you round 75 to the nearest tenth it would be 80

uysha [10]2 years ago

5 0

Answer:

The Answer is 242.7 feet

Step-by-step explanation:

Therefore the answer is option B on edge. Hope this helps!

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One afternoon 12 inches of snow fell after 1 1/2 hours. At this rate, how many inches of snow fell in 1 hour?

lidiya [134]

Answer:

8 inches

Step-by-step explanation:

Use a Ratio:

12 inches : 1 1/2 hours

? inches : 1 hours

12/1.5 = x/1

8 = x/1

x = 8 * 1

x = 8 inches

8 0

3 years ago

From the lighthouse 1000 ft above sea level the angle of depression to boat a is 29 degress.a little bit later the boat moved cl

AnnyKZ [126]

Answer: The boat moved 768.51 feet in that time .

Step-by-step explanation:

Since we have given that

Height of the lighthouse = 1000 feet

Angle depression to boat 'a' = 29°

Angle of depression to shore 'b' = 44°

Consider ΔABC,

$\tan 44\textdegree=\frac{AB}{BC}\\\\\tan 44\textdegree=\frac{1000}{BC}\\\\BC=\frac{1000}{\tan 44\textdegree}\\\\BC=1035.53\ feet$

Now, Consider, ΔABD,

$\tan 29\textdegree=\frac{AB}{BD}\\\\\tan 29\textdegree=\frac{1000}{BD}\\\\BD=\frac{1000}{\tan 29\textdegree}\\\\BD=1804.04\ feet$

We need to find the distance that the boat moved in that time i.e. BC

so,

$DC=BD-BC\\\\CD=1804.04-1035.53\\\\CD=768.51\ feet$

Hence, the boat moved 768.51 feet in that time .

6 0

3 years ago

Mrs Williams has 30 students in her class 12 of her students are boys what percent of Mrs Williams students are boys

photoshop1234 [79]

30 divided by 12 equals 2.5 so it should equal 2.5%

8 0

2 years ago

Read 2 more answers

The sampling distribution has a mean of 0.03 and a standard error of 0.007. The researchers' sample mean comes back at 0.026. In

SIZIF [17.4K]

Answer:

z = -0.57

Step-by-step explanation:

A z-score indicates how much away is something from the mean so it can be more(above) than the mean or less(below) than the mean.

sampling distribution mean = 0.03

standard error = 0.007

researcher's sample mean = 0.026

z = (0.026 - 0.03)/0.007

z = (-0.004)/0.007

z = -0.57

So that means the researcher's sample mean is 0.57 standard deviation below the sampling distribution mean.

The negative sign above is the indicator of below the mean value.

5 0

3 years ago

If other factors are held constant, what happens to a confidence interval if the sample variance increases? The range of t score

Firlakuza [10]

Answer:

The standard error increases and the width of the interval increases

Step-by-step explanation:

The variance is equal to the square of the standard deviation. An increase in variance will increase the standard deviation.

The width of the confidence interval can be defined as:

$W=UL-LL=2z\sigma/\sqrt{n}$

The width is proportional to the standard deviation, so when the variance increases, the standard deviation and also the width of the interval increases.

3 0

2 years ago