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PilotLPTM [1.2K]
3 years ago
11

The sum of the measures of the interior angles of a convex polygon is 360 degrees? How many sides does the polygon have?

Mathematics
1 answer:
Alex17521 [72]3 years ago
3 0

Answer: the polygon has

Four sides

Step-by-step explanation:

A square has 4 interior angles of 90° each. 4×90°=360°

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During the spring Nina Milling assembles bicycles at the wheeler Dealer. She is paid $10.00 for each bicycle assembled during a
Lena [83]

Answer:

Step-by-step explanation:

4x10=40

7x10=70

6x10=60

10x10=100

8x10=80

4x14=56

5x16=80

40+70+60+100+80+56+80= $486

5 0
3 years ago
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Melanie is very concerned with avoiding late fees. The table shows her choices for paying her bills. Method Bill Payment Methods
pshichka [43]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
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A random sample of 100 observations from a quantitative population produced a sample mean of 22.8 and a sample standard deviatio
natima [27]

Answer:

We conclude that the population mean is 24.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 24

Sample mean, \bar{x} = 22.8

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 8.3

First, we design the null and the alternate hypothesis

H_{0}: \mu = 24\\H_A: \mu \neq 24

We use Two-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{22.8 - 24}{\frac{8.3}{\sqrt{100}} } = -1.44

We calculate the p-value with the help of standard z table.

P-value = 0.1498

Since the p-value is greater than the significance level, we accept the null hypothesis. The population mean is 24.

Now, z_{critical} \text{ at 0.05 level of significance } = \pm 1.96

Since,  the z-statistic lies in the acceptance region which is from -1.96 to +1.96, we accept the null hypothesis and conclude that the population mean is 24.

7 0
3 years ago
If f(x) = 4(3x - 5), find f-1(x)
deff fn [24]

Answer:

f^{-1}(x) =  \frac{1}{12}(x+20)

Step-by-step explanation:

Given: f(x) = 4(3x - 5)

Is required to find f⁻¹(x)

f(x) = y = 4(3x - 5)

∴ y = 4 * 3x - 4 * 5

∴ y = 12x - 20 ⇒ add 20 to both sides

∴ y + 20 = 12x ⇒ divide both sides by 12

∴ \frac{1}{12} (y+20) = x

Replace the places of x and y.

∴ y=\frac{1}{12} (x+20)

∴ f^{-1}(x) =  \frac{1}{12}(x+20)

7 0
3 years ago
What is the sum of 6 feet 10 inches and 8 feet 9 inches?
vivado [14]
Lets first convert everything to inches.

6 feet= 12*6 = 72 + 10 = 82 inches
8 feet= 12*8 = 96+9 =  105 inches

Now add!

82+105 = 187

Now convert them back to feet.

187/12 = 15 feet

12*15 = 180

187 - 180 = 7 inches

15 feet. 7 inches. 

Final answer: B. 15 ft. 7 in.
6 0
3 years ago
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