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
jenyasd209 [6]
3 years ago
11

In the diagram below, determine the value of $x$: [asy] size(6.5cm); pair cis(real magni, real argu) { return (magni*cos(argu*pi

/180),magni*sin(argu*pi/180)); } draw(cis(1.5,15)--cis(-1,15)--cis(-1,15)+cis(2.5,-15)); draw(cis(-1,60)--cis(1,60)--cis(1,60)+cis(2.2,-75)); label("$30^\circ$",cis(-1,15)+(0.2,0),E); label("$45^\circ$",cis(1,60)+(-0.05,-0.2),S); label("$130^\circ$",(-0.03,0.03),SE); label("$x^\circ$",(0.8,-0.64)); [/asy]
Mathematics
1 answer:
Inessa05 [86]3 years ago
6 0

Answer:

55 degrees

I answered the question on AoPS and it said it was correct.

You might be interested in
-950-?= -379<br><br><br> Help Will give brainliest!!
Karolina [17]
Answer: -571

Step-by-step-explanation:
-950 - (-571) = -379
-950 + 571 = -379
Hope this helps :)
8 0
3 years ago
3. A big league pitching coach tries to limit his pitchers to 110 pitches per game. If the pitcher has
krek1111 [17]
110 minus 52 is 58 so the answer would be 58 more pitches
5 0
3 years ago
Solve for w, where w is a real number.
Ber [7]

Answer:

w= 9

Step-by-step explanation:

\sqrt{ - 4w + 61}  = w - 4

Square both sides:

-4w +61= (w -4)²

\boxed{(a - b)^{2}  = a^2 -2ab + b^2 }

Expand:

-4w +61= w² -2(w)(4) +4²

-4w +61= w² -8w +16

Simplify:

w² -8w +16 +4w -61= 0

w² -4w -45= 0

Factorize:

(w -9)(w +5)= 0

w -9= 0 or w +5= 0

w= 9 or w= -5 (reject)

Note:

-5 is rejected since we are only taking the positive value of the square root here. If the negative square root is taken into consideration, then w= -5 would give us -9 on both sides of the equation.

<u>Why </u><u>do </u><u>we </u><u>use </u><u>negative </u><u>square </u><u>root?</u>

When solving an equation such as x²= 4,

we have to consider than squaring any number removes the negative sign i.e., the result of a squared number is always positive.

In the case of x²= 4, x can be 2 or -2. Thus, whenever we introduce a square root, a '±' must be used.

However, back to our question, we did not introduce the square root so we should not consider the negative square root value.

6 0
2 years ago
Read 2 more answers
How does a person use credit to make a
Black_prince [1.1K]

Answer:

makes a promise to pay at some point in the future

Step-by-step explanation:

Using credit means you borrow money to buy something, which is called a "loan", then you can buy the things you want, and you can pay it back later (with interest).

6 0
3 years ago
What is the z-score of a newborn who weighs 4,000 g?.
vagabundo [1.1K]

The z-score of the considered newborn having 4,000 g weight is \dfrac{4000 - \mu}{\sigma}

<h3>How to get the z scores?</h3>

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

X \sim N(\mu, \sigma)

(X is following normal distribution with mean \mu and standard deviation  \sigma)

then it can be converted to standard normal distribution as

Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

P(Z \leq z) = P(Z < z) )

Also, know that if we look for Z = z in z tables, the p value we get is

P(Z \leq z) = \rm p \: value

For the considered case, the statement in the problem is missing the mean weight of the newborn and standard deviation of the data set of weights of newborn.

Thus, for them, we can consider variables in place of their actual values.

Let we have:

  • X = weights of newborns for some considered system (in grams)
  • \mu = mean weight of newborns (in grams)
  • \sigma = standard deviation of the data set of weights of newborns

Then, the z-score for X = 4000 is

z = \dfrac{x - \mu}{\sigma} = \dfrac{4000 - \mu}{\sigma}

Thus, the z-score of the considered newborn having 4,000 g weight is \dfrac{4000 - \mu}{\sigma}

Learn more about z-scores here:

brainly.com/question/13299273

3 0
2 years ago
Other questions:
  • HELP I NEED HELP ASAP ONEIS BRAINLY
    9·1 answer
  • A bag of apples weighs 7 7/8 pounds and a full bag costs $10.88. By weight 1/18 of the apples are rotten . What is the cost of t
    9·2 answers
  • Solve for w<br> S=2(lw +lh+wh)
    10·1 answer
  • SOMEOEN PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 ITS URGENT PLEASE HELP! 20 POINTS!!!!!
    15·2 answers
  • What is the inequality for 5(x+3)−8&lt;17
    10·1 answer
  • Please actually help because my anxiety sucks. "Joe is seven years younger than Bill. The sum of their ages is less than 49. At
    6·1 answer
  • What is the next term of the arithmetic sequence?<br> 2,-1,-4,-7,-10
    8·1 answer
  • 2. The coordinate grid shows triangle RST. (x, y) - 0,-) S R. ✓ O (x,y) - (x, y) O (x,y) - (-y, x) O (x,y) - (-x, y) CLEAR ALL T
    12·2 answers
  • What is the solution set for this inequality? -8x + 40&gt;-16
    13·2 answers
  • The graphs below have the same shape. What is the equation of the blue graph?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!