1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Harlamova29_29 [7]
2 years ago
14

Find the value of a and b

Mathematics
1 answer:
Kipish [7]2 years ago
4 0

Answer:

Step-by-step explanation:

In triangle ADC,

b+50+60=180(sum of angles of triangle equals 180)

or,b=180-110

▪b=70

also,

In triangle ABD,

angleA = 30+50=80

now,

a+80+60=180(sum of angles of traingle equals 180)

or,a=180-140

▪a=40'

Ans.

You might be interested in
The speeds of cars on a given i street we are normally distributed with a mean of 72 miles per hour and a standard deviation of
Ostrovityanka [42]

Answer: 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

Step-by-step explanation:

Let X be a random variable that represents the speed of the drivers.

Given: population mean : M = 72 miles ,

Standard deviation: s= 3.2 miles

The probability that the drivers are traveling between 70 and 80 miles per hour based on this distribution:

P(70\leq X\leq 80)=P(\frac{70-72}{3.2}\leq \frac{X-M}{s}\leq\frac{80-72}{3.2})\\\\= P(-0.625\leq Z\leq 2.5)\ \ \ \ \ [Z=\frac{X-M}{s}]\\\\=P(Z\leq2.5)-P(Z\leq -0.625)\\\\\\ =0.9938-0.2660\ \ \ [\text{Using p-value calculator}]\\\\=0.7278

Hence, 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

3 0
3 years ago
Hi, have a good day!
Zinaida [17]
Thank.........you......so.........much.....
3 0
2 years ago
Read 2 more answers
The larger of two numbers is 4 more than 2 times the smaller number. If the sum of the two numbers is 28, what is the larger num
Musya8 [376]

Answer:

The larger number is 20.

Step-by-step explanation:

Let x and y be the two numbers.

y = 2x + 4

x + y = 28

So x + 2x + 4 = 28

3x = 24

x = 8

y = 20

3 0
2 years ago
Manny's parents came in to eat and he waited on them. Their bill was $45.20, and they left him a 35% tip. How much was his tip?
Sav [38]

Step-by-step explanation:

Use the equation ?/45.20 = 35\100 and what you get is your answer

Hope this helps

8 0
2 years ago
A ball is launched into the sky at 54.4 feet per second from a 268.8 meter tall building. The equation for the ball’s height, h,
worty [1.4K]

Answer:

7.41

Step-by-step explanation:

Vertical component:

S = 268.8

U = 0

V =?

A = 9.8

T=?

S = ut + 0.5at^2. u = 0

268.8 = 0.5x9. 8xt^2

T = 7.41 seconds

5 0
2 years ago
Read 2 more answers
Other questions:
  • Evaluate f(x) = -3x+3 for x=-2
    12·2 answers
  • Napkins came in a box of 500.How many people could use 3 napkins each?How many more would be needed for another person?
    15·1 answer
  • Solve 4x - c= k for x.
    8·2 answers
  • What is the volume of the cylinder if the height is 2x+7 and the radius is x-3
    9·1 answer
  • What they mean by 1/2? I mean I do know that 1/2 means half, but what they mean?​
    14·2 answers
  • Who could help me please and thank you
    10·1 answer
  • What is the common ratio of 9, 81, 729. -6561
    13·1 answer
  • 14. peggy had 4 times as many quarters as nickels, she had 2.10 in all how many buckles and quarters did she have?
    11·1 answer
  • Jason went bowling with his family. He rented shoes and bowled 5 games. He also
    13·1 answer
  • Two interior decorating teams are competing in a kitchen remodel competition. Their remodels are graded on the following categor
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!