Answer:
C
Step-by-step explanation:
Cos x has a minimum of -1.
So Let find what x value in radians will equal -1
[tex] \cos(x) = - 1[/tex]
This occurs at x=pi
[tex] \cos {}^{ - 1} (1) = \pi[/tex]
Since cos is a periodic function, we add 2pi to it continously
[tex]\pi + 2\pi n[/tex]
convert pi to 3.14
[tex]3.14 + 2(3.14)n[/tex]
[tex]3.14 + 6.28n[/tex]
Let try when n is 4
[tex]3.14+(6.28)4[/tex]
[tex]3.14 + 25.12[/tex]
[tex]28.26[/tex]
[tex]28.3[/tex]
Change 4972 metres to kilometers
Answer:
4.972 kilometers
Step-by-step explanation:
meters => kilometers => divide by 1000
=> 4972/1000
=> 4.972 km
Answer:
4.972
Step-by-step explanation:
divide by 1000
hope it helps
SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.
Step-by-step explanation:
I think It might be this im not sure
A square has side length y. The side length of a second square is 2 more than y. Express the area, A, of the second square in terms of y.
Work Shown:
Area = (side length)^2
Area = (y+2)^2
Area = (y+2)(y+2)
Area = y^2 + 2y + 2y + 4
Area = y^2 + 4y + 4
Can someone help me with this please
Answer: y=-2x+6
Step-by-step explanation:
[tex]m=\frac{6-2}{0-2}=\frac{4}{-2}=-2[/tex]
So [tex]y=2x+b[/tex]. We can substitute (0, 6) to get:
6 = 2(0)+b
b=6.
Meaning y=-2x+6.
1.1.1 4x - 8x x 1.1.2 3x-2x =14 (Correct to two decimal places) 1.1.3 2x-2
Answer:
I think I have a ride to the dispo house and I have to go to the dispo and get the rest of the day you can get it done before you get home and I'll be there in about to be a little late to the dispo and I will be there in a few minutes to get there so we can get it done before we get back and I will be home you can get it done
Find the equation for the line that passes through the point (3,4) and that is parallel to the line with the equation x=4
Answer:
x = 3
Step-by-step explanation:
This is a slightly special case because x = 4. That means that there is no slope to the line.
Since our parallel line goes through the point (3, 4) the equation will be x = 3 to "match" the slope, or lack of, to the original line.
o What is the slope of the equation y- 5 = -3x? o 5 -3 bo do o 8
Answer:
-3
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
Chad has 40% less money than Erin.Erin has $240 .How much money does chad have?
Answer:
96
Step-by-step explanation:
Use g00g*e- just type --% of $----.
sorry its censors the word.
Answer:
Chad has: $144
Step-by-step explanation:
First we need to get 40% of 240 which we can do by multiplying 240 by 0.40.
240 * 0.40 = 96
Now we can just take what we got for 40% of 240, and then subtract it from 240.
240 - 96 = 144
Please can anybody answer fast?
Answer:
1: 0.5
2: 0.921
3: 4.705
4: 2.203
5: 0.695
Compare the rates of change of the following items.
20 points !!! PLEASE HELP
A.
The rate of change of item II is greater than the rate of change of item I.
B.
The rate of change of item I is greater than the rate of change of item II.
C.
The rate of change of item I is equal to the rate of change of item II.
Answer:
C
Step-by-step explanation:
the equation of relationship between x and y in item ll is: y = -x -3
the rate of change of it is -1 that is equal to the rate of change of items l.
What are the phase shift and period for the function y=2cos1/2(0+30°)-4
Phase shift 30° left, period 720°
Phase shift 30° right, period 330°
Phase shift 30° right, period 90°
Phase shift 30° left, period 180°
Answer:
The last one is because the phase shift happens to the left.
And the period 2pi/2
I need help,
Find the perimeter of the rectangle. Write your answer in Scientific Notation
area = l x w
w = area : l
w = 5.612 x 10¹⁴ : 9.2 x 10⁷
w = 6.1 x 10⁶
the perimeter: 2(l+w)
= 2(9.2 x 10⁷ + 6.1 x 10⁶)
=1.84 x 10⁸ + 1.22 x 10⁷
=10⁷(18.4+1.22)
= 1.962 x 10⁸ cm
Answer:
P = 2.0 × 10⁸ cm
Step-by-step explanation:
5.612 × 10¹⁴ = 9.2 × 10⁷ · x
6.1 × 10⁶ = x
9.2 × 10⁷ + 9.2 × 10⁷ + 6.1 × 10⁶ + 6.1 × 10⁶ = 1.962 × 10⁸ cm
The area of 8 cm
8 cm
6 cm
7.2 cm
7.2 cm
Answer: 2(6+7+8)cm =42cm
Step-by-step explanation:hope it helps you!
Question:
The mean lifetime of 100 mobile phones in a sample is 1,500 hours and their standard deviation is 120 hours, u is the mean lifetime of all the mobile phones produced. Perform a test of hypothesis that the sample comes from a population whose mean is 1,600 hours at 586 significance level 10 marks
Using the t-distribution, as we have the standard deviation for the sample, it is found that since the absolute value of the test statistic is greater than the critical value for the two-tailed test, there is enough evidence to conclude that the sample does not come from a population whose mean is 1,600 hours.
What are the hypothesis tested?
At the null hypothesis, it is tested if the mean is of 1600 hours, that is:
[tex]H_0: \mu = 1600[/tex]
At the alternative hypothesis, it is tested if the mean is different of 1600 hours, that is:
[tex]H_1: \mu \neq 1600[/tex]
What is the test statistic?It is given by:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.In this problem, the values of the parameters are:
[tex]\overline{x} = 1500, \mu = 1600, s = 120, n = 100[/tex]
Hence, the value of the test statistic is:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{1500 - 1600}{\frac{120}{\sqrt{100}}}[/tex]
[tex]t = -8.33[/tex]
What is the decision rule?
Considering a two-tailed test, as we are testing if the mean is different of a value, with 100 - 1 = 99 df and a significance level of 0.01, the critical value is of [tex]t^{\ast} = 1.66[/tex].
Since the absolute value of the test statistic is greater than the critical value for the two-tailed test, there is enough evidence to conclude that the sample does not come from a population whose mean is 1,600 hours.
More can be learned about the t-distribution at https://brainly.com/question/13873630
can I have help with the problem in the picture pls
10.
The school auditorium can seat 200 people. The middle school was putting up a school play
on two different days. On the first day, people sat in 70% of the seats. On the second day,
people sat in 81% of the seats. What was the total number of people for both days?
Answer:
302
Step-by-step explanation:
10 = 20
70 = 140
81 = 162
140+162=302
Write the equation of the line that passes through the point (2, -1) and has a slope of
-3
A. Y=3x+5
B. Y=-3x+5
C. Y=-3x - 5
D. Y=3x -5
Let's recall that , the equation of line that passes through the point [tex]{\bf (x_{1},y_{1})}[/tex] and has a slope m is [tex]{\bf y-y_{1}=m(x-x_{1})}[/tex]
Now using the same concept in our question , we have ;
[tex]{:\implies \quad \sf Y-(-1)=-3(x-2)}[/tex]
[tex]{:\implies \quad \sf Y+1=-3x+6}[/tex]
[tex]{:\implies \quad \sf Y=-3x+6-1}[/tex]
[tex]{:\implies \quad \bf \therefore \quad \underline{\underline{Y=-3x+5}}}[/tex]
Hence , Option B) Y = -3x + 5 is correct :D
Solve the measurement conversion problem. 12 inches=1 foot
Each s'more is 4 inches long. If you placed 6 s'mores in a row, they would be 2 feet.
A) less than
B) 2 times
C) equal to
D) greater than
Answer:
A) less than
Step-by-step explanation:
4 times 6 is 20
24 inches is 2 feet
So, it is A because 20 is less than 24.
The number of people estimated to vote in an election was 7000. The actual number of people who voted was 5600
Answer:
If you mean the percentage error then look at this
Step-by-step explanation:
% error = Estimated - Actual x 100
Estimated. 1
% error = 7000 - 5600 x 100
7000. 1
% error = 1400 x 100
7000
% error = 140000/7000
% error = 20%
what is a double prime in geometry?
provide example if possible.
Answer/Step-by-step explanation:
A double prime is a symbol used to distinguish a third quantity x^('') ("x double prime") from two other related quantities x and x^' ("x prime). Double primes are most commonly used to denote transformed coordinates, conjugate points, and derivatives. A double prime is also used to denote the number of arc seconds in an angle measure, or the number of inches in a length.
The system of equations below has no solution. Which equation could represent a linear combination of the system? lm *+¿x= 15 = 42 4x + 15 y = 12 0 0 = -78 DO 15 -y=33 2 O0=0
Answer:
0
Step-by-step explanation:
Answer:
Your answer is B!
Step-by-step explanation:
Have an amazing day/night!
Please mark me brainliest!
Quinn is playing in a trivia competition. He earns 50 correct points for each correct response variable =c. He loses 25 points for each wrong variable =w. Write an algebraic expression to represent Quinn's points
(PLEASE RESPOND QUICKLY!!!)
Answer:
50c-25w=p
Step-by-step explanation:
Let p be Quinn's total points.
c represents the amount that he got right, therefore, earning 50 points per c's that he gets.
w is the amount of points that he loses, therefore we must subtract it from the points that he has gained from the correct questions.
The extended warranty on a garage door is $238. If the warranty costs 35% of the purchase price, how much does the garage door itself cost, to the nearest dollar?
Answer:
$680
Step-by-step explanation:
X = total price of garage door
238 = .35x
divide both sides by .35
680 = x
The door cost $680
Answer correctly and give the solution.
Answer:
(a) Independent variable: b (number of bags sold)
Dependent variable: p(b) (profit)
(b) 25
(c) 84700
(d) 70
(e) b < 25
Step-by-step explanation:
(a) Independent variable: b (number of bags sold)
Dependent variable: p(b) (profit)
(b) To break even, set p(b) to zero and solve for b:
⇒ 350b - 8750 = 0
⇒ 350b = 8750
⇒ b = 8750 ÷ 350
⇒ b = 25
(c) Substitute b = 267 into equation and solve for p(b):
⇒ 350(267) - 8750 = 84700
(d) Set p(b) to 15750 and solve for b:
⇒ 350b - 8750 = 15750
⇒ 350b = 15750 + 8750
⇒ 350b = 24500
⇒ b = 24500 ÷ 350
⇒ b = 70
(e) If she breaks even when she sells 25 bags, if she sells less than 25 bags she will have a negative profit. So b < 25
pls Help I give brainlyest
Answer:
increased by 10%
Step-by-step explanation:
The circumference of a circle is 35 13/21 in.
What is the approximate diameter of the circle?
Use 22/7 for π.
Enter your answer as a mixed number in simplest form in the box.
in.
Answer:
11 1/3
i did the test
Answer:
The answer is 11 1/3
Step-by-step explanation:
I took the test
solve trigonometric function
2csc∅- 2cos^2 ∅ ×csc∅
Answer:
[tex]2\sin(\theta)[/tex]
Step-by-step explanation:
[tex]\csc(\theta)=\dfrac{1}{\sin(\theta)}[/tex]
[tex]\sin^2(\theta)+\cos^2(\theta)=1\implies \sin^2(\theta)=1-\cos^2(\theta)[/tex]
[tex]2\csc(\theta)- 2cos^2(\theta)\times csc(\theta)[/tex]
[tex]=\dfrac{2}{\sin(\theta)}-\dfrac{ 2cos^2(\theta)}{\sin(\theta)}[/tex]
[tex]=\dfrac{ 2[1-cos^2(\theta)]}{\sin(\theta)}[/tex]
[tex]=\dfrac{ 2sin^2(\theta)}{\sin(\theta)}[/tex]
[tex]=2\sin(\theta)[/tex]
[tex]\\ \rm\Rrightarrow 2cscA-2cos^2A(cscA)[/tex]
[tex]\\ \rm\Rrightarrow 2(1/sinA)-2cos^2A(1/sinA)[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2}{sinA}-\dfrac{2cos^2A}{sinA}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2-2cos^2A}{sinA}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2(1-cos^2A)}{sinA}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2sin^2A}{sinA}[/tex]
[tex]\\ \rm\Rrightarrow sinA[/tex]
Discuss the present and the future of information system in Ghana.*
Do you guys know the answer?
Answer:
147
Step-by-step explanation:
This is because, 33 and x are supplementary so you just solve for x;
33 + x = 180
-33 -33
x = 147
If every 5 minutes I get 3 coins then how long will it take for me to get 75 coins?
