All categories

2 years ago

I need help ASAP, please save me.

Mathematics

1 answer:

Sav [38]2 years ago

4 0

Answer:

Angle DCE is a central angle so it's equal to the arc facing it, which is DE, which is given as 116. So angle DCE= 116°

Angle EDF is an angle between a tangent line, DF, and a secant line, DE. So its measure is equal to half of the arc it surrounds, which is arc DE. 116/2= 58°. Angle EDF=58°.

You might be interested in

Find the missing side of the triangle

Leona [35]

Answer:

Step-by-step explanation:

Using Pythagoras theorem, we have

x^2+11^2=15^2, x^2=104, x=2*sqrt(26)

6 0

2 years ago

A runner was timed at 4 miles per hour. how many feet per minute did they run?

kherson [118]

Answer:

352

Step-by-step explanation:

because miles are 5,280 steps so 5,280 multiplied by 4 as in miles is 21,120 so that divided by 60 as in a minute it will be 352

8 0

3 years ago

Read 2 more answers

2/3 cups of raisins are mixed with 1/2 cup peanuts what is the ratio

krok68 [10]

3:5 because if you add the fractions together it is what you get so the 5 would be raisins and the 3 would be peanuts

6 0

2 years ago

One skeleton in a museum has 189 bones.another skeleton has 232 bones. How many bones are in the two skeleton?

gayaneshka [121]

421 is the correct answer.

8 0

2 years ago

The head of a computer science department is interested in estimating the proportion of students entering the department who wil

olya-2409 [2.1K]

Answer:

Step-by-step explanation:

From the given information:

At 95% Confidence interval level,Level of significance $\alpha$ 0.05, the value of Z from the standard normal tables = 1.96

Margin of Error = 0.10

Let assume that the estimated proportion = 0.5

therefore; the sample size n can be determined by using the formula: $n =(\dfrac{Z}{E})^2 \times p\times (1-p)$

$n =(\dfrac{1.96}{0.1})^2 \times 0.5\times (1-0.5)$

$n =(19.6)^2 \times 0.5\times (0.5)$

n = 96.04

n $\approx$ 96

8 0

3 years ago