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Related Questions
Rewrite with only sin x and cos x.
cos 2x + sin x
1 + 3 sin x
1 + 3 sin2x
1 - 2 sin2x + sin x
1 + 2 sin2x + sin x
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Answer:
[tex]cos(2x)+sin(x)=1-2\,sin^2(x)+sin(x)[/tex]
which agrees with the third option listed.
Step-by-step explanation:
I believe you meant to write the answer with only sin(x).
Use the double angle identity for the cos(2x) as shown below:
[tex]cos(2x) = cos^2(x)- sin^2(x)\\since \\cos^2(x) = 1-sin^2(x)\\then:\\cos(2x) = 1-sin^2(x)- sin^2(x)\\cos(2x)=1 - 2\,sin^2(x)[/tex]
Now we use this identity in the original expression to get:
[tex]cos(2x)+sin(x)=1-2\,sin^2(x)+sin(x)[/tex]
which agrees with the third option listed.
Which equation represents the relation this between x and y?
x | y
1 | 4
2 | 5
3 | 6
4 | 7
a. y = x + 1 b. y = x - 3 c. y = x + 3
d. y = 3x + 1
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How can I use a model to solve 1.4 divided by 4?
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Answer: 0.35
Step-by-step explanation:
A survey of 800 students yielded the following information: 519 were seniors, 430 were commuters, and 300 of the seniors were commuters. How many of the 800 surveyed students were seniors or were commuters?
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Answer:
The number is [tex](S \ u \ C ) = 649[/tex]
Step-by-step explanation:
From the question we are told that
The sample size is n = 800
The number of seniors is S = 519
The number of commuters is C = 430
The number of of seniors that are commuters is [tex](S\ n \ C )= 300[/tex]
Generally the number of 800 surveyed students who were seniors or were commuters is mathematically evaluated as
[tex](S \ u \ C ) = S + C - ( S \ n \ C )[/tex]
=> [tex](S \ u \ C ) = 519 + 430 - 300[/tex]
=> [tex](S \ u \ C ) = 649[/tex]
Yuki works at a garden store. She is stacking 40-pound bags of soil. Write an equation that gives the total weight, w, of the soil in pounds when yuki stacks b bags.
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The answer is w=40b Answer:
Step-by-step explanation:
Answer:200
Step-by-step explanation:
w=40b
=40(5)
=200
Giving everything. Plzzz help.
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Answer:
a is the answer..........
The side of a square is measured to be 10ft with a possible error of plus/minus 0.1ft. Use linear approximation or differentials to estimate the error in the calculated area. Include units in your answer.
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Answer:
±2∧
Step-by-step explanation:
x=10ft dx=±0.1
area y=x²
dy=2xdx
when x=10
dy=2×10×(±0.1)=±2
error in area=±2
4. I
Write a linear function f with f (0) = 7 and f(3) = 1.
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Answer:
f(x)=
Step-by-step explanation:
Arrange the integers 1,4,8,12,17,32 so that all consecutive integers add to a perfect square. Enter your answer with numbers separated by commas.
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One possible answer is: 1, 8, 17, 32, 4, 12
I don't know if there's a methodical way to get this answer. I used trial and error. I started with 1 and looked through the list to see what adds to 1 to get a perfect square. That would be 8 since 1+8 = 9 = 3^2
The process is repeated but this time for 8. After a bit of guess and checking, we see that 8+17 = 25 = 5^2.
Then after 17 is 32 because 17+32 = 49 = 7^2.
Keep doing this until all of the values are used up. If you get stuck, then try backtracking to a previous branch/path where everything worked and try another fork in the road. If that doesn't work, then try starting the sequence with a completely different value (instead of 1).
Other answers may be possible. I haven't checked all possible permutations.
If 6 sandwich rolls cost $1.08, How much will 18 rolls cost ?
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Answer: 3.24
Step-by-step explanation: because :)
i need help with this question please
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Answer: it C
Step-by-step explanation: if it not incorrect sorry for the wrong answer
james bought a pound of chicken for 2.99 a pound of cheese for 5.99 and a bag of potatos for 3.99 find his total at checkout if the sales tax is 7%
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Answer:
13.88 (if you round up)
Step-by-step explanation:
2.99+5.99+3.99 = 12.97
12.97 * 7% = .9079
12.97 + .9079 = 13.8779
What is the name of a polygon that has four congruent sides and these angle
measures: 60°, 120°, 60°, 120°?
A. Rectangle
B. Rhombus
C. Trapezoid
D. Square
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Answer:
I believe the answer is "rhombus." so B
Step-by-step explanation:
If bananas cost $0.45 each, how much will 9 bananas cost in all
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Answer:
$4.05
Step-by-step explanation:
0.45 x 9 = 4.05
Answer:
$4.05
Step-by-step explanation:
1 banana = $0.45
9 bananas = $0.45 × 9
= $4.05
find the slope please help
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A 22-ounce casserole contains 8 servings. How many ounces are in 1 serving of the casserole?
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Answer:
the answer is 2.75 to this question
Answer:
2.75
Step-by-step explanation:
22 divided by 8 will get the ounces per serving.
Find the quotient: 6)27L 600 mL
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Answer:
27*1000=27000ml
600ml
Now, 27000ml+600ml=27600ml
Step-by-step explanation:
The graph of a system of equations will intersect at exactly 1 point?
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Answer:
A system of equations can intersect at no points; this is when the lines are parallel, which means they have the same slope and different y-intercept. A system of equations can intersect at one point; this is when the lines have different slopes.
Step-by-step explanation:
Which one of these transformations move by sliding in any direction?
A.Translation
B.Rotation
C.Reflection
D.Dilation
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Answer:
D. Dilation, sorry if i'm wrong ;)
Step-by-step explanation:
Parker grew
2 1/2 inches each year for the past 3 years. How many inches total has Parker grown in the past 3
years?
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Answer:
it will be 7 and 1/2
Step-by-step explanation:
2 and 1/2 x 3=7 and 1/2
Distance between 3,-6 and -2,-5
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-2,-5 is three
Answer for 24 points
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Math 201 Statistics week 6 discussion board?
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Explanation: what’s the question??
A local restaurant only sells burgers and cokes. 3 burgers and 5 comes cost $17, while 6 burgers and 9 cokes cost $33. What’s the price of a burger?
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Answer:
The price of a burger is $4 and that of cone is $1.
Step-by-step explanation:
Let the cost of burger is x and that of cone is y.
ATQ,
3x+5y = 17 ....(1)
And
6x + 9y = 33 ...(2)
Multiply equation (1) by 2.
6x + 10 y = 34 ...(3)
Subtract equation (2) from (3)
6x + 10 y-(6x + 9y) = 34 - 33
6x + 10 y-6x- 9y = 1
y = 1
Put the value of y in equation (1)
3x+5 = 17
3x = 12
x = 4
So, the price of a burger is $4 and that of the cone is $1.
Plzzzzz help right answer gets a brainly!
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Answer:
3
Step-by-step explanation:
i think because that what's between
This is multipling fractions 3x8/9=
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Answer:
8/3
Step-by-step explanation:
to multiply 3 by 8/9 then convert 3 into a fraction
3/1 x 8/9 (multiply across)
24/9 (now simplify)
8/3
What is the least common denominator of 7/12, 7/15, and 7/24?
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Answer:
120
Step-by-step explanation:
PLZ HELP IM WASTING MY POINTS FOR THIS Match each expression to its value.
1. -1 + 2
1
2. 1 + (-2)
-3
3. -1 - 2
3
4. 1 - (-2)
-1
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Answer:
1. 1
2. -1
3. -3
4. 3
If you have any questions on the topic let me know. :)
Answer:
1. 1
2. -1
3. -3
4.3
Step-by-step explanation:
...
Graph the line
Y=-2x-5
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Step-by-step explanation:
I hope this helps you answer your questions about graphing the line.
what is the relationship between any place value position
and the next greater place value position.
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Step-by-step explanation:
Possible description: As I move from a lesser place-value position to the next greater place-value position, the pattern is that the greater place-value position is 10 times as much as the next lesser place-value position.