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
Svetradugi [14.3K]
2 years ago
7

What is the measure of angle 2z (pic in question)

Mathematics
2 answers:
Natali5045456 [20]2 years ago
7 0
Z should be 63
the third angle is 180 - 168 ( adjacent angles on St line)
so the angle should be 12,
and the sum of triangle is 180,
so it should be 2z = 180 - 42 - 12
z should be 63
mart [117]2 years ago
4 0
180 - 168 = 12

180 - 42 - 12 = 126
2z = 126 
You might be interested in
Which of the followibg expressions is equivalent to the expression a^2/3​
Naily [24]

Answer:

C. I can’t really enter square roots

Step-by-step explanation:

a^2/3 = a^2*a^1/3

Which is the cube root of a squared

4 0
3 years ago
What is the solution to this equation? 4x^2+98=0
Bess [88]
There is no real solution

6 0
3 years ago
Please help me i don’t understand this question at all.
Maru [420]

9514 1404 393

Answer:

  D.

Step-by-step explanation:

The wording "when x is an appropriate value" is irrelevant to this question. That phrase should be ignored. (You may want to report this to your teacher.)

When you look at the answer choices, you see that all of them are negative except the last one (D). When you look at the problem fraction, you see that it is positive.

The only reasonable choice is D.

__

Your calculator can check this for you.

  √12/(√3 +3) ≈ 3.4641/(1.7321 +3)

  = 3.4641/4.7321 ≈ 0.7321 = -1 +√3

__

If you want to "rationalize the denominator", then multiply numerator and denominator by the conjugate of the denominator. The conjugate is formed by switching the sign between terms.

  \displaystyle\frac{\sqrt{12}}{\sqrt{3}+3}=\frac{\sqrt{12}}{(\sqrt{3}+3)}\cdot\frac{(\sqrt{3}-3)}{(\sqrt{3}-3)}=\frac{\sqrt{36}-3\sqrt{12}}{3-9}\\\\=\frac{6-3\cdot2\sqrt{3}}{-6}=\boxed{-1+\sqrt{3}}

_____

<em>Additional comment</em>

We "rationalize the denominator" in this way to take advantage of the relation ...

  (a -b)(a +b) = a² -b²

Using this gets rid of the irrational root in the denominator, hence "rationalizes" the denominator.

We could also have multiplied by (3 -√3)/(3 -√3). This would have made the denominator positive, instead of negative. However, I chose to use (√3 -3) so you could see that all we did was change the sign from (√3 +3).

3 0
2 years ago
On Saturday, Nicole earns no more than $55 at her job. On Sunday, she earns at least $40. Which of these inequalities represent
makkiz [27]

Answer:

B

Step-by-step explanation:

use your head

7 0
3 years ago
Read 2 more answers
Help with practice problem
padilas [110]

Answer:

attached above with detail explanation.

5 0
2 years ago
Other questions:
  • Which is the graph of f(x)=3 two thirds to the power of x
    8·1 answer
  • Decompose the fractions from fraction in 2 different way 1 3/5
    6·1 answer
  • Members of the drama club sold T shirts for their upcoming musical. Of the 80 T shirts sold, 55 % were size medium. How many of
    6·1 answer
  • How do i this im so bad at it
    10·1 answer
  • Determine algebraically whether the function is even, odd, or neither even nor odd.
    12·1 answer
  • A total of 400 students voted in school's singing contest. The circle graph shows results. How many votes did Adrian get
    13·1 answer
  • Lee is a teacher at a local high school who wanted to assess whether or not dogs physically resemble their owners enough for peo
    6·1 answer
  • Need help please I would really appreciate it
    11·1 answer
  • Use function notation to represent each statement. Six hours after it started raining, the amount of rain was 37 millimeters.
    11·1 answer
  • Can someone help me solve this?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!