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
sdas [7]
3 years ago
8

Find the value of z.

Mathematics
1 answer:
Leokris [45]3 years ago
3 0

The exterior angle at the intersection of the tangent and secant has a measure that is half the difference between the intercepted arcs.

... ((10x+20) -80)/2 = 2x+15

... 5x -30 = 2x +15

... 3x = 45

... x = 15

So, the unknown arc to the right has measure

.. 10x + 20 = 10·15 +20 = 170

And the arcs of the circle total 360°.

... 80 + z + 170 = 360

... z = 360 - 250 = 110 . . . subtract 250 from both sides

The appropriate choice for the value of z is

... B. 110

You might be interested in
TO get a certain shade of green paint, Melissa decides to mix 3 gallons of blue paint with 2 gallons of yellow paint. How much b
Harlamova29_29 [7]
You have a fraction of 3/2. 3/2=1.5
Therefore, she needs 1.5 gallons of blue paint per 1 gallon of yellow paint.
7 0
3 years ago
When given an inverse variation, how do you find k?
atroni [7]

Considering an inverse proportional relationship, you find k taking a point (x,y), and multiplying the values of x and y.

<h3>What is a proportional relationship?</h3>

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

For an inverse relationship, the function is:

y = \frac{k}{x}.

Then:

k = xy.

Which means that to find k, you take a point (x,y), and multiply the values of x and y.

More can be learned about proportional relationships at brainly.com/question/10424180

#SPJ1

8 0
2 years ago
The tile backslash will be a mixture of colors of five-inch square tiles. One quarter of the tiles will be "Indian Red" one sixt
Vladimir79 [104]

Answer:

The fraction of tiles that will be the color of "sand" is 23/60

Step-by-step explanation:

we know that

The sum of the fractions of the tiles must be equal to 1

Let

x ----> the fraction of tiles that will be the color of "sand"

we have that

\frac{1}{4}+\frac{1}{6}+\frac{1}{5}+x=1

solve for x

Find the Least Common Multiple of denominators

LCM=(2^2)((3)(5)=60

Multiply both sides by 60

\frac{60}{4}+\frac{60}{6}+\frac{60}{5}+60x=60

simplify

15+10+12+60x=60

60x=60-37\\60x=23\\x=\frac{23}{60}

therefore

The fraction of tiles that will be the color of "sand" is 23/60

5 0
3 years ago
What is the retail price of a couch at a furniture store that has a wholesale price of $115 and is marked up by 75 percent?
mel-nik [20]
115 + 0.75*115
= 115 + 86.25
= $201.25
4 0
3 years ago
You evidence of how you got that answer
Evgesh-ka [11]
It’s a. The reason is because Beth makes a stable income for her first 20hrs of work, and then gets another constant income for her coming hours. That said this has to be a straight line followed by another straight line. That narrows it down to a and b. It can’t be b, because if it were Beth would be making less than she did before after her pay changes. Because she makes more, the graph showing this must be a
8 0
3 years ago
Other questions:
  • Mrs. Sanchez has a bag of assorted nuts that contain almonds, pecans, and walnuts. 1/3 of the nuts are almonds and 3/4 of the re
    5·2 answers
  • Calculate the effective annual interest rate if the annual interest rate, i, is 9%.
    13·2 answers
  • Which is the graph of the function y=2(4)^x
    11·2 answers
  • Factor. Explain.<br> 24x³y²-4x²y+84x^4
    9·1 answer
  • How many times lotion is in Bottle Y than in bottle X
    6·1 answer
  • Which graph represents and exponential function?
    13·1 answer
  • You have $4.10 and would like to buy some almonds .if a pond costs $8, how many ounces can you buy ?
    11·1 answer
  • Sam has twice as many as books as Jim. If Sam gives 12 books to Jim, they will have the same number of books. How many books do
    9·1 answer
  • Andre looks at a box of paper clips. He says: “I think the number of paper clips in the box is less than 1,000.” Lin also looks
    8·1 answer
  • Back to school is coming and laura is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!