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zavuch27 [327]
3 years ago
10

What is the measure of EBC ? ___ degrees

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
8 0

Answer:

The measure of arc EBC is 220°

Step-by-step explanation:

step 1

Find out the measure of angle COB

we know that

m∠COB+m∠DOC=90°  -----> given problem

we have that

m∠DOC=m arc DC -----> by central angle

m arc DC=50°

so

m∠DOC=50°

Find m∠COB

m∠COB+50°=90°

m∠COB=40°

step 2

Find out the measure of arc BC

we have that

m arc BC=m∠COB -----> by central angle

m∠COB=40°

therefore

m arc BC=40°

step 3

Find out the measure of arc EBC

we know that

m arc EBC=m arc EB+m arc BC

m arc EB=180° -----> because the diameter divide the circle into two equal parts

so

m arc EBC=180°+40°=220°

Finger [1]3 years ago
6 0

Answer:D

Step-by-step explanation:

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MariettaO [177]

Answer:

B

Step-by-step explanation:

40+88+15=128+15=143

There are three rectangles that compose this shape. The first one has side lengths of 5 & 8 (l times w=a 5 times 8=40, area of the rectangle is 40). The second one has side lengths of 8&11 (8 times 11=88, area is 88). Final rectangles has side lengths of 16-(8+5) and 5 (16-13=3, 3 times 5=15, Area=15). All three of those rectangles added up is 143 as an area of the figure.

5 0
2 years ago
$35,125 loan, a feat which took ten years of quarterly payments. The loan had an interest rate of 7.44%, compounded quarterly. I
Darya [45]
First find the amount of each payment:
35,125 = P(\frac{(1+i)^{40} -1}{i (1+i)^{40}}) , i = \frac{.0744}{4}  \\  \\ P = 1252.70

The total cost will be 40 payments plus service charges.
40*1252.70 + 5180.70 = 55,288.90

The percentage is the service charge divided by total cost:
X = \frac{5180.70}{ 55,288.90} = .0937 = 9.37\%
7 0
3 years ago
PLEASE SOLVE THIS FOR ME sorry if it’s blurry :(
daser333 [38]

Answer:

A=500

Step-by-step explanation:

for mylar for polygon Area =ap/2

where a =apathem,p =perimeter

A=10*100/2

1000/2

500=a

the perimeter is the square of all the sides of the given polygon =10 sides =100

6 0
3 years ago
The amount Denise charges to repair computers is $50 an hour plus a $25 service fee. Write an expression to show how much she wi
k0ka [10]
The expression is

50h+25

50 times the number of hours, "h"
25 representing the one time service fee
6 0
3 years ago
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