Answer:
56.55
Step-by-step explanation:
C=2πr=2·π·9≈56.54867
Answer:
18π cm or 56.52cm
Step-by-step explanation:
Circumference = 2πr
2π(9)
18π
18π = 56.52
I need help with this question
Find the domain of the graphed function
find the slope given on the graph
Answer:
m = rise / run = 2/1 = 2
Step-by-step explanation:
The line shown passes through (-2, -1) and (-1, 1).
The horizontal distance moved is -1 - (-2), or 1 (this is the 'run'), and the vertical distance moved is 1 - (-1) = 2 (this is the 'rise')
Thus, the slope of the given line is m = rise / run = 2/1 = 2
David just accepted a job at a new company where he will make an annual salary of $69000. David was told that for each year he stays with the company, he will be given a salary raise of $2500. How much would David make as a salary after 4 years working for the company? What would be his salary after t t years?
Answer:
After 4 years working for the company, he would make $79,000 of salary.
His salary after t years will be:
[te]S(t) = 69000 + 2500t[/tex]
Step-by-step explanation:
David just accepted a job at a new company where he will make an annual salary of $69000. David was told that for each year he stays with the company, he will be given a salary raise of $2500.
This means that after t years, his salary will be given by:
[te]S(t) = 69000 + 2500t[/tex]
How much would David make as a salary after 4 years working for the company?
[te]S(4) = 69000 + 2500*4 = 69000 + 10000 = 79000[/tex]
After 4 years working for the company, he would make $79,000 of salary.
how to solve 2x-4(x+3)= x-3
Answer: x=-3
Step-by-step explanation:
2x-4(x+3)=x-3
2x-4x-12=x-3
-2x-12=x-3. add 12 to both sides
-2x=x+9. subtract x from both sides
-3x=9. Divide both sides by -3
x=-3
Find the value of x
NEED HELP ASAP PLS NO FILE DROPS OR I WILL REPORT THANKS
Answer:[tex]x=15[/tex]
Step-by-step explanation:
Angles that are opposite from each other are going to be the same in this case.
Let's plug in 15 into x
[tex]4(15)+8\\60+8\\68[/tex]
What is the value of x in the figure below?
A. 85°
B. 32°
C. 27°
D. 30°
What is the slope for 10x + 15y = -90 ?
Answer:
m = − 2/ 3
Step-by-step explanation:
WILL GIVE BRAINLIEST PLEASE HELP: In rectangle ABCD the diagonals intersect each other at point O and m ABD = 30 degrees. Find BC if AC = 16 in.
Answer:
8
Step-by-step explanation:
We know that ABD is 30 degrees. To find BC, we need to use sin.
Equation:
BC = 16*sin(30 degrees) I recommend using a calculator to find the sine if you don't know what it means and how to use it. Sine is basically the side length opposite of the angle over the hypotenuse of the right triangle.
BC = 16*0.5
BC = 8
Sorry, I couldn't find an image.
Hope this helps!
Can anyone help me with my homework
Answer:
1: (0,3)
2: (-4,-2)
3: (-1,-5)
4: (4,0)
Step-by-step explanation:
the sum of three times the square of a number and -7
Answer:
3x² - 7
Step-by-step explanation:
3 times (number squared) and sum with (-7)
3 times x² and add (-7)
3x² + (-7)
3x² - 7
A positive angle less than 360 degrees that is coterminal with -5 degrees is
Answer:
[tex]\theta = 355[/tex]
Step-by-step explanation:
Given
Let the angle be [tex]\theta[/tex]
[tex]\theta < 360[/tex]
[tex]\theta[/tex] is co-terminal with -5
Required
Find [tex]\theta[/tex]
Start by dividing 5 by 360 (ignore the negative)
[tex]\frac{5}{360} = 0.0138[/tex]
The nearest integer greater than 0.0138 is 1.
This implies that if you were to draw for this problem, the circle you would draw to show -5 degrees would go around 1 time
So, [tex]\theta[/tex] is calculated as:
[tex]\theta = -5 + 1*360[/tex]
[tex]\theta = -5 +360[/tex]
[tex]\theta = 355[/tex]
If the length of a rectangular prism is 6 meters , the breadth is 7 meters and the height is 9 meters , then determine the volume of the rectangular prism ( in cubic meters ) . Write the correct answer .
Answer:i don’t know
Step-by-step explanation:
please
Add, simplify the answer and write it as a mixed number
Spencer sampled 50 students of a private school who were questioned about their scores in Mathematics. Spencer wants to test the hypothesis that the private school students score better than the general public which has an average of 62 marks with a population standard deviation of 7 marks. z equals fraction numerator x with bar on top minus mu over denominator begin display style fraction numerator sigma over denominator square root of n end fraction end style end fraction If the sample mean is 65 marks, what is the z-score
Answer:
The z-score is 3.03.
Step-by-step explanation:
The null hypothesis is:
[tex]H_{0} = 62[/tex]
The alternate hypotesis is:
[tex]H_{1} > 62[/tex]
The z-score is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
Spencer sampled 50 students of a private school who were questioned about their scores in Mathematics.
This means that [tex]n = 50[/tex]
Spencer wants to test the hypothesis that the private school students score better than the general public which has an average of 62 marks with a population standard deviation of 7 marks.
This means that [tex]\mu = 62, \sigma = 7[/tex]
If the sample mean is 65 marks, what is the z-score
This is z when [tex]X = 65[/tex]. So
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{65 - 62}{\frac{7}{\sqrt{50}}}[/tex]
[tex]z = 3.03[/tex]
The z-score is 3.03.
( t+8) x2 = s when t is 4
Answer:
24
Step-by-step explanation:
(4+8)x2=s
12 x2=s
24=s
what is the difference between 724,435 and 226,710
Answer:
The difference is:497,725
Step-by-step explanation:
PLS HELP WILL GIVE BRAINIEST Which triangle makes this statement true?
Mary sells fruit with four of her friends. If the earnings are divided evenly
much must the business make in order for each person to earn $30?
In the problem above, how many partners are included in this business?
what is 33x2+3 who wants to zo om
Answer:
33x2=66
66+3=69
Step-by-step explanation:
Answer:
69
Step-by-step explanation:
PEMDAS their are no parenthesis no exponents but their is multiplication 33 times 2 is 66 their is addition 66 plus 3 is 69
Brighton is 15 kilometers due east of kinsburg and 13 kilometers due west of Hamilton how many meters apart are kings burg and Hamilton
Answer:
ig the answer is 195 kilometers apart from each other cuz 15x13=195
4,000mL=__L what is the answer?
Answer:
4 Liters
Step-by-step explanation:
Blake is cutting a piece of rope into fourths. if each piece is 16 inches long, what is the length of the entire rope?
Answer:
64inches.
Step-by-step explanation:
Let x represent the length of entire rope.
Division Equation:
\frac{x}{4} = 16
\frac{x}{4} X 4 =16x4 (Multiply each side by 4)
x=64
Therefore, length of entire rope is 64 inch.what does f + t equal?
5500
10
900
Answer:
What is f & what is t?
Please help i have been trying to figure this out for like an hour
Answer:
B
Step-by-step explanation:
Since x varies directly as y, the ratio of x to y remains the same. Let the value of x when y=4 be a. Then we have
[tex]\dfrac {7 \frac12} {10} = \dfrac a4[/tex]
We can cross multiply to get that
[tex]10a = 30, \text{so } \boxed{a=3}[/tex]
Jennifer and Jonson weigh a total of 193.23 pounds. If Jonson
weighs 114.47 pounds, how much more does Jonson weigh
than Jennifer?
Answer:
78.76
Step-by-step explanation:
subtract 114.47 from 193.23
193.23-114.47=78.76
Answer:
35.71 pounds
Step-by-step explanation:
193.23 - 114.47 = 78.76
114.47 - 78.76 = 35.71
hope this helps :)
PLS HELP WILL GIVE BRAINIEST Which triangle makes this statement true?
Answer:
Option B
Step-by-step explanation:
Option D can be eliminated to start off with since the angles are different from the original triangle
Options C and A can be eliminated since they have different side lengths
This leaves us with B
Juanita made an initial investment of $3000 in a mutual fund. During the first year the value of her investment decreased by 5%, but during the second year
the value increased by 12%.
What was the value of Juanita's mutual fund investment after the first two years?
Answer:
the answer is 1433.55
Step-by-step explanation:
3. People with type O-negative blood are universal donors (any patient can
receive a transfusion of O-negative blood). Only about 6.6% of the American
population has O-negative blood. If 270 unrelated people give blood in a certain
week, how many of these people do we expect to be universal donors? (Hint:
Remember to convert percent numbers to decimals before multiplying.)
PLEASE HELP
Answer:
We expect 17.82, that is, approximately 18 people to be universal donors.
Step-by-step explanation:
For each person, there are only two possible outcomes. Either they are universal donors, or they are not. The probability of a person being an universal donor is independent of any other person. This means that we use the binomial probability distribution to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
Can be approximated to a normal distribution, using the expected value and the standard deviation.
The expected value of the binomial distribution is:
[tex]E(X) = np[/tex]
The standard deviation of the binomial distribution is:
[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]
Only about 6.6% of the American population has O-negative blood.
This means that [tex]p = 0.066[/tex]
If 270 unrelated people give blood in a certain week, how many of these people do we expect to be universal donors?
This is E(X) when [tex]n = 270[/tex]. So
[tex]E(X) = np = 270*0.066 = 17.82[/tex]
We expect 17.82, that is, approximately 18 people to be universal donors.
2-9 of the students are in a school are in 6th grade how many sixth graders are there if the school has 27 students
Answer:
Step-by-step explanation: