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
Naddika [18.5K]
3 years ago
9

Help me please and show all work.

Mathematics
1 answer:
Brrunno [24]3 years ago
3 0
Arctan(53/22) = 67.5 degrees
You might be interested in
Select the point that is a solution to the system of inequalities.
Lyrx [107]

Answer:

D. (2, 6)

Step-by-step explanation:

Look at the picture.

Check:

(2, 6) → x = 2, y = 6

Put the coordinates of the point to the inequalities:

y < x² + 6

6 < 2² + 6

6 < 4 + 6

6 < 10    TRUE

y > x² - 4

6 > 2² - 4

6 > 4 - 4

6 > 0   TRUE

8 0
3 years ago
Multiplying polynomials find the product (2a-1)(8a-5)
Yuki888 [10]
(2a-1)(8a-5)=2a\cdot 8a-2a\cdot 5-8a\cdot 1-5\cdot (-1)=\\ \\=16a^2-10a-8a+5=16a^2-18a +5


4 0
3 years ago
Read 2 more answers
A repeated-measures study comparing two treatments with n = 4 participants produces md = 2 and ss = 75 for the difference scores
valentinak56 [21]

The estimated standard error for the sample mean difference is  2.5 .

According to the question

A repeated-measures study comparing two treatments

n = 4

MD(mean difference) = 2

SS (sum of square) = 75

Now,

error for the sample  

Formula for standard error

S^{2} = \frac{SS}{n-1}

by substituting the value

S^{2} = \frac{75}{4-1}

S^{2} = \frac{75}{3}

S² = 25

S = 5 (s is never negative)

Standard error of the estimate for the sample mean difference

As

The standard error of the estimate is the estimation of the accuracy of any predictions.

The formula for standard error of the mean difference

standard error of the mean difference  =\frac{standard\\\ error}{\sqrt{n} }  

standard error of the mean difference = \frac{5}{\sqrt{4} }  

standard error of the mean difference = 2.5

Hence, the estimated standard error for the sample mean difference is  2.5 .

To know more about estimated standard error here:

brainly.com/question/14524236

#SPJ4

5 0
1 year ago
Solving fp<br> Algebra 2<br> I do not understand how to solve this, could someone please explain?
Olenka [21]

f(x) =  \sqrt{x + 2}
What's The Fixed Point? Well, Let's Assume X=0, this is our point.

f(0) =  \sqrt{0 + 2}  \\ f(0) =  \sqrt{2}  \\ this \: is \: our \: fixed \: point \:  \\ (0, \sqrt{2} )
OR

f(p) =  \sqrt{p + 2}  \\  \\  or \:  \sqrt{x + 2}  = 0 \\ ( \sqrt{x + 2} ) ^{2}  =  {0}^{2}  \\ x + 2 = 0 \\ x  =  - 2
I'm unaware of the nature of the question, so here are some different ways a fixed point is found based on the merits of the question.
4 0
3 years ago
Please help me with this question, thanks.
arlik [135]

Answer:

  2.48×10^13 miles

Step-by-step explanation:

There are about (365.25 days)(86400 seconds/day) = 31,557,600 seconds in one year. There are 1609.344 meters in one mile. So, the conversion can be written as ...

  (4.22 ly) (3×10^8 m/s) (3.15576×10^7 s/yr) / (1.609344×10^3 m/mi)

  = 4.22×3×3.15576/1.609344×10^(8+7-3) mi

  ≈ 24.8×10^12 mi

4.22 light years is about 2.48×10^13 miles

8 0
3 years ago
Other questions:
  • Samantha's age is 3 years more than half her uncle's age. If her uncle's age is z years, which of the following expressions best
    14·2 answers
  • What is the median of 3 8 14 14 14 15 15 15 16 18<br> Plz help me
    10·2 answers
  • What is the vertex of g(x) = 3x2 − 12x + 7?
    6·2 answers
  • A cafeteria manager needs to know how many apples and bananas to to order. He asked students to choose either an apple or a bana
    15·1 answer
  • The sum of three consecutive numbers is 72 what is the largest of these numbers
    13·1 answer
  • The double number line shows the approximate number of ounces in a certain number of pounds:
    9·2 answers
  • Which of these strategies would eliminate a variable in the system of equations?
    10·1 answer
  • Multiply 30x2 14/15 I will give branliest
    7·2 answers
  • Find the midpoint of the line segment with the given endpoints: (- 9, 3)(7, - 8)
    10·1 answer
  • At a coffee shop, the first 100 customers' orders were as follows. Smol Medium Large Hot 5 48 8 12 5 ll/ If we choose a customer
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!