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
Goryan [66]
3 years ago
6

Help me pleaseeeeeeeeee

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0
Most likely 45 i think
spayn [35]3 years ago
7 0

Answer:

I think it should be 40°

Step-by-step explanation:

-------------

You might be interested in
What equation would help determine the cost of 4 markers if five markers are $6.55 and remember I am asking for the equation not
harkovskaia [24]

Answer:

4($6.55)/5

Step-by-step explanation:

If five markers cost $6.55

then equate or cross multiply inorder to get the cost of 4 markers.

4($6.55)/5

7 0
2 years ago
Maria mixed a purple paint color using 5 tubes of blue and 7 tubes of red to create one painting. How many tubes of red paint wo
saveliy_v [14]

Answer:

42

Step-by-step explanation:

because it took 7 tubes of red for one painting and when she does 6 you would multiply 6x7 and it would equal 42.

5 0
3 years ago
In a clinical test with 2161 subjects, 1214 showed improvement from the treatment. Find the margin of error for the 95% confiden
Vlad [161]

Answer:

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment.

This means that n = 2161, \pi = \frac{1214}{2161} = 0.5618

95% confidence level

So \alpha = 0.05, z is the value of Z that has a p-value of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Margin of error:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.96\sqrt{\frac{0.5618*0.4382}{2161}}

M = 0.0209

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

4 0
3 years ago
Are the triangles shown congruent?
boyakko [2]

Answer:

the second one i think

Step-by-step explanation:

because both have 2 sides with 1 angle

5 0
3 years ago
For the equation 2(4+x)+(13+x)=3x+k which value of k will create an equation with no solutions. .A. x B. 3x .C 15 D. 21
Artist 52 [7]
<h3>Answer: choice C) 15</h3>

Simplify the left side to get

2(4+x)+(13+x)

2(4)+2(x) +13+x

8+2x+13+x

3x+21

------------

So the original equation

2(4+x)+(13+x) = 3x+k

turns into

3x+21 = 3x+k

------------

Subtract 3x from both sides

3x+21 = 3x+k

3x+21-3x = 3x+k-3x

21 = k

k = 21

-----------

If k = 21, then the original equation will have infinitely many solutions. This is because we will end up with 3x+21 on both sides, leading to 0 = 0 after getting everything to one side. This is a true equation no matter what x happens to be.

If k is some fixed number other than 21, then there will be no solutions. This equation is inconsistent (one side says one thing, the other side says something different). If k = 15, then

3x+21 = 3x+k

3x+21 = 3x+15

21 = 15 .... subtract 3x from both sides

The last equation is false, so there are no solutions here.

note: if you replace k with a variable term, then there will be exactly one solution.

6 0
3 years ago
Other questions:
  • Please help for number 22 I will give 20 points!
    5·1 answer
  • Kelly spent $20 on rides and snacks at the state fair if X is that amount she spit on rides and y is the amount she spent on sna
    8·1 answer
  • Ted is taking a true-false test. He has a 90% chance of identifying the correct answer to each question. Unfortunately, there is
    14·1 answer
  • Help me pls
    9·2 answers
  • The school choir is selling fruit boxes to earn money for new robes. The fruit boxes sell for $30
    12·1 answer
  • If a value increases from 4 to 6 what is the percent of increase
    12·2 answers
  • Nothing nothing nothing nothing
    10·2 answers
  • The coordinate grid shows the plot of four equations:
    10·1 answer
  • How are (5.3,1) and (-5.3,1) related?
    13·1 answer
  • Help pls
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!