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sertanlavr [38]
3 years ago
12

HELP PLEASE ASAP!! I CAN'T FAIL

Mathematics
1 answer:
Anettt [7]3 years ago
3 0

Since you take 56 from 140 to get 84, then the percent decrease is 56/140. 56/140 is 0.4, and when converted into a percent it is 0.4 x 100 = 40%.

The answer is 40% decrease.

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The measure of an angle is fourteen times the measure of its supplementary angle.What is the measure of each angle?
alina1380 [7]

Answer:

12 and 168

Step-by-step explanation:

Supplementary add up to 180°

x+14x = 180

15x=180

x=12

12*14=168

168+12 = 180

5 0
3 years ago
Monica built a remote-controlled, toy airplane for a science project. To test the plane, she launched it from the top of a build
True [87]

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[0,50]

Step-by-step explanation:

The function takes from value the distance from the plane to the building, and returns the height of the plane at that point in feets. Assuming that the plane goes always down, it will always be up to the height of the building. Note that the horizontal distance the plane travels at any point is equivalent to the distance of the plane with the building at that point, because the building is perpendicular to the ground. So, at the end of the travel the plane will be 50 feets away from the building. SInce it starts at 0 distance, then the domain of the function is [0,50]

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3 years ago
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Gala2k [10]

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7 0
3 years ago
The data set shows the number of hours per week that each student in a class spends studying at home. What is the shape of the d
AVprozaik [17]

Answer:

The answer is symmetrical

Step-by-step explanation:

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4 0
3 years ago
Compute the standard deviation of the following set of data to the nearest whole number:
Klio2033 [76]

Answer:

Step-by-step explanation:

The standard deviation is the square root of the variance, and the variance is found by using the mean. So we will do that first. I will use the population variance as opposed to the sample variance since our set of numbers is small.

The mean: 8 + 12 + 15 + 17 + 18 = 70 and divide that by 5 to get

\bar{x}=14 and use this to find the variance in the formula:

s^2=\frac{\sum(x_i-\bar{x})^2}{n} it is a bit difficult to enter that formula in correctly, but here's how it works mathematically:

s^2=\frac{(8-14)^2+(12-14)^2+(15-14)^2+(17-14)^2+(18-14)^2}{5}

Squaring this ensures us that we don't end up with zero, which would be useless.

s^2=\frac{36+4+1+9+16}{5} so

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s = 3.633

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3 0
3 years ago
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