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3 years ago

Unit 11 Homework 1: Area of Plane Figures

Mathematics

2 answers:

mariarad [96]3 years ago

7 0

Answer: There’s nothing

Step-by-step explanation:

iren2701 [21]3 years ago

4 0

Answer: 4. 432 cm^2/2 = 216 cm^2

6. 309.76 mm^2

8. pi * 22^2 = 484pi (or, approximately 1,519.76) in^2

484/2 = 242pi or 759.88 in^2.

10. 297.84 in^2/2 = 148.92 in^2

Step-by-step explanation:

To find the area of a triangle, you take the base and multiply by the height, and then divide by 2. Hence giving me the answers I obtained in #4 and #10.

A square is equal on all sides, so you would just square the measurement of the one side.

To find the area of a circle, you would do pi times the radius^2. Since this is a semicircle, you actually should divide the number you got by 2. (Which is why I did so up above).

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Kiara made a square baby blanket she decided to add one foot of material to one side then cut 4 inches of material off from the

schepotkina [342]

Answer:

Step-by-step explanation:

960 which is the area u divide by the one foot which is 144 square units to get your answer,6.66666666667

8 0

2 years ago

What is the volume of a rectangular prism with a length of 12 feet, a width of 7 feet, and a height of 8 feet?

Bingel [31]

Answer:

672

Step-by-step explanation:

V=LWH

V=12*7*8

V=672

6 0

3 years ago

Read 2 more answers

Help ASAP please!!!!

RoseWind [281]

Answer:

There are 327,811 doctors.

Step-by-step explanation:

Percentage of female doctors = $16.9$ %

Number of female doctors = $55,400$

Percentage of Male doctors = $100-16.9$ %

= $83.1$ %

So if $55,400$ doctors are represented by $16.9$ how many doctors are represented by $100$ %?

$100$ % represents total number of doctors.

⇒ $\frac{55,400}{16.9} \times100$

=327,810.65

Number of doctors has to be a whole number so we rounf off the number to nearest whole number:

Therefore there are 327,811 doctors.

4 0

3 years ago

At a manufacturing company for medical supplies, machines produce parts used in highly specialized lasers. Company researchers a

vodomira [7]

Answer:

A) Increase the significance level to increase the probability of a Type I error

Step-by-step explanation:

According to the information of the problem we can say that the researchers have the difficulty with a test that is evaluating a machine, which works well but the test does not get to verify this information correctly, we have that the null hypothesis is that the new machine does not improve precision, so the risk of the researchers is to accept the hypothesis when it is false, what is called type II error, to avoid this, the level of significance should be increased, which in turn would increase the probability of type I error. , so the correct answer is A.

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3 years ago

the Wright flyer was the first successful powered aircraft a model was made to display in a museum with the length of 35 cm and

Savatey [412]

To compare the displayed Wright flyer in the museum with the actual plane, we have to compute for the ratio of the corresponding parameter. In this item, for both the display and the actual plane, we are given with the length. Computing for the ratio gives us,
ratio = length of the model / length of the actual plane

Length of the model = 35 cm
We need to calculate for the length of the model in ft.
length of the model = (35 cm)(1 in/2.54 cm)(1 ft/12 in)
length of the model = 1.148 ft

Going back to the equation for the ratio,
ratio = (1.148 ft)/21 ft
ratio = 0.055

Hence, the dimensions used in the model is equal to 0.055 times the actual dimensions.

Error may occur because of the number of significant figures considered for rounding up or down of the answers after each calculation.

6 0

3 years ago