All categories

3 years ago

Find measure of angle BDC

Mathematics

1 answer:

Liula [17]3 years ago

4 0

The 2 angles are complemantary or form right angles so $-3x+20-2x+55=90=-5x+75=90=-5x=15
$ so $x=3$ . Plugging that into BDC we get 11

You might be interested in

The best way to solve the equation log 6 (6)^7 = x is

dybincka [34]

Answer:

(A) put the 7 in front of the log

log 6 (6)^7 = x

7 * log 6 (6) = x

7 * 1 = x

x = 7

6 0

4 years ago

I NEED HELP PLEASEEeeeeee

tatuchka [14]

X=18

Explanation:

The sum of the 3 angles in a triangle is 180∘

hence , the sum of the 3 angles given must equal 180

We can form an equation

2x + 3x + 5x = 180 ⇒10x=180⇒x=180/10
x=18

2(x) = 2(18)=36
3(18)=54
5(18)=90

3 0

3 years ago

What is 4(2 + a) = 24 <br> a=

frez [133]

A=4 biigchvuivbibiinon

3 0

3 years ago

Read 2 more answers

You have a jar containing 55 coins, consisting entirely of nickels and quarters, worth a

yawa3891 [41]

Answer: 22 quarters

Step-by-step explanation:

Let N be the number of nickels.

Then the number of quarters is (55-N)

The nickels contribute 5N cents to the total.

The quarters contribute 25*(55-N) cents to the total.

5N + 25*(55-N) = 715

5N + 1375 - 25N = 715

-20N = 715 - 1375 = -660

$N=\frac{-660}{-20}$

$=33$

$55-33=22$

So there is 22 quarters inside the jar.

Check to see if my answer is correct-

33*5 + 22*25 = 715 cents

6 0

3 years ago

Find the area of the circle with the given radius or diameter. use = 3.14. r = 6 a =

Slav-nsk [51]

A=πr2 A=3.14 x 6 x 6 answer=113.04

3 0

4 years ago

Read 2 more answers