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2 years ago

Find the measure of the arc DC

Mathematics

1 answer:

Nat2105 [25]2 years ago

3 0

Answer:

The measure of arc DC is 50°. Circle O is shown. Line segments A C and E B are diameters. Line segment O D is a radii. Point D is between points E and C. Angle B O D is 90 degrees. What is the measure of Arc E B C? 40° 90° 140° 220°

Step-by-step explanation:

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Find the height of a parallelogram with an area of 300 square yards and a base of 15 yards

dmitriy555 [2]

Answer:

The formula for the area of a parallelogram is bh.

15(h) = 300

h = 20

The height of the parallelogram is 20 yards.

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2 years ago

How many pounds are there in a kg

Dafna11 [192]

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All outcomes being equally likely, what is the probability a classmate receives a gift bag with a bouncy ball?

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2 years ago

Given that cos(30°) = cos(45°)cos(15°) + sin(45°)sin(15°), it follows that cos(30°) =

mario62 [17]

Answer:

$cos(30\°) = cos(45\°-15\°)$

Step-by-step explanation:

To solve this problem you must know the formula of subtraction of angles for the function cosx.

The formula is:

$cos(h-d) = cos(h)cos(d) + sin(h)sin(d)$

We can write 30° as: 45° - 15°

Then:

$cos(30\°) = cos(45\°-15\°)$

Using the formula for subtraction of angles we have:

$cos(45\°-15\°) = cos(45\°)cos(15\°) + sin(45\°)sin(15\°)$

Notice that we have achieved the expression shown in the statement

Finally:

$cos(30\°) = cos(45\°-15\°)$

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2 years ago

Read 2 more answers

Happy Paws charges $19.00 plus $2.50 per hour to keep a dog during the day. Woof Watchers charges $10.00 plus $3.75 per hour. Co

Papessa [141]

Answer:

equation: y = 2.5h + 19 for happy paws

y = 3.75p + 10 for woof watchers

hours: 7.2 or 7 hours and 12 minutes

Step-by-step explanation:

lmk if you want an explanation

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2 years ago