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3 years ago

What is the measure of angle C?

Mathematics

1 answer:

Kaylis [27]3 years ago

5 0

Answer:

angle C = 36°

Step-by-step explanation:

Fun fact that I found out:

all interior angles of a triangle added together = 180°

5x + 3x + 2x = 180°

combine like terms:

10x = 180°

divide both sides of the equation by 10:

x = 18°

angle C = 2(18°) = 36°

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Rachel measures the lengths of a random sample of 100 screws. The mean length was 2.6 inches, with a standard deviation of 1.0 i

olga_2 [115]

Answer:

Step-by-step explanation:

Using the alternative hypothesis (µ < µ0),

To find the p-value with test statistic -1.25 and assuming a standard level of significance of 0.05, using a p value calculator, the p-value is 0.1057 which is great that 0.05. Thus, the results is not significant.

Using the p value calculation.

1. Check the left tailed z table as the test statistic is negative,

2. Then find the probabilitythat z is greater than your test statistic (look up your test statistic on the z-table- the value under 1.2 and 0.05 which is 0.8944

3. Then, find its corresponding probability, and subtract it from 1 to get your p-value- 1-0.8944 = 0.1056.

4 0

4 years ago

I still need help guys

8_murik_8 [283]

Answer: 399=300+90+9

-45=0+40+5

300+130+14=414

Step-by-step explanation:

Expanded form is a way to write numbers by showing the value of each digit.

4 0

3 years ago

Read 2 more answers

Find the distance between -2 1/2 and -5 3/4 on a number line

Elena-2011 [213]

Answer:

13/4

Step-by-step explanation:

Convert these numbers to a mixed fraction.

-5 3/4 => -23/4

-2 1/2 => -5/2

Make them have a common denominator

-5/2 => -10/4

-23/4 can stay the same.

To find the distance between the two numbers, subtract the lesser value from the greater value.

-23/4 is less than -10/4.

(-10 - (-23)) /4

= 13/4

Therefore the distance between -2 1/2 and -5 3/4 on a number line is 13/4.

5 0

4 years ago

Write an equation in slope intercept form of the line containing the points (-2,5) and (9,-6)

otez555 [7]

(-2,5)(9,-6)
slope(m) = (-6-5) / (9 - (-2) = -11/11 = -1

y = mx + b
slope(m) = -1
(-2,5)...x = -2 and y = 5
now we sub and solve for b, the y int
5 = -1(-2) + b
5 = 2 + b
5 - 2 = b
3 = b

so ur equation in slope intercept form is : y = -x + 3

4 0

3 years ago

A 4-bedroom, 4-bath 4,875 square feet house was listed at $445,000. Andreas, the seller, accepted an offer that was 95% of the l

klasskru [66]

Answer: He gets $86.71 per square foot

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Area = 4,875 square feet

Price = $445,000

First, we have to divide the price of the house by the area, to obtain the price per square foot:

Mathematically speaking:

$445,000 / 4,875 square feet = $91.2 per square foot (original price)

Now we have to multiply it by the offer in decimal form (95/100 =0.95)

$91.2 x 0.95 = 86.71 per square foot

He gets $86.71 per square foot.

Feel free to ask for more if needed or if you did not understand something.

8 0

3 years ago