Hi I hope you can help me im struggling with this. ((: I'll give you a brainy thing if your right
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Related Questions
Sin^3A.cos A + Cos^ 3 A = Cos A
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Answer:
One root is 90 degrees or π/2 radians.
Drawing a graph we get all the roots:
nπ and π(n - 1/2)
Step-by-step explanation:
Sin^3A.cos A + Cos^ 3 A = Cos A
Divide through by cos A
sin^3A + cos^2A = 1
sin^3 A = 1 - cos^2 A
sin^3 A = sin^2 A
sin A = 1
So one root is A = 90 degrees or π/2 radians.
Checking this result:
(sin 90^3 * cos 90 + (cos 90)^3 = 1 * 0 + 0 = 0
cos 90 = 0
So this is correct..
I'll give you a Branily Jin spent 32 hours on math and language arts homework last month. She spent about 30% of this total time on math. About how many hours were spent on math?
Group of answer choices
3/10 of 30 hours is 9 hours
1/5 of 30 hours is 6 hours
1/2 of 30 hours is 15 hours
3/5 of 30 hours is 18 hours
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Answer:
its a
Step-by-step explanation:
32 divided by .3 gives you the correct answer
Which relation is a function? Group of answer choices (2, 7), (6, 5), (4, 4), (3, 3), (2, 1) (9, −3), (9, 3), (4, −2), (4, 2), (0, 0) (1, 0), (3, 0), (1, 1), (3, 1) (1, 3) (1, 1), (2, 2), (3, 3), (4, 4), (5, 8)
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Given:
The relations in the options.
To find:
The relation which is a function.
Solution:
Consider the options are :
(a) {(2, 7), (6, 5), (4, 4), (3, 3), (2, 1)}
(b) {(9, −3), (9, 3), (4, −2), (4, 2), (0, 0)}
(c) {(1, 0), (3, 0), (1, 1), (3, 1) (1, 3)}
(d) {(1, 1), (2, 2), (3, 3), (4, 4), (5, 8)}
A relation is a function if there exist a unique y-value for each x-value.
In option (a), y=7 and y=1 at x=2. So, it is not a function.
In option (b), y=-3 and y=3 at x=9. So, it is not a function.
In option (c), y=0 and y=1 at x=3. So, it is not a function.
In option (d), there are unique y-value for each x-value. So, it is a function.
Therefore, the correct option is (d).
Hamza bought 8 gallons of brown paint to paint his kitchen and dining room. Unfortunately, when Hamza started painting, he thought the paint was too dark for his house, so he wanted to make it lighter. The store manager would not let Hamza return the paint but did inform him that if he used 1/4 of a gallon of white paint mixed with 2 gallons of brown paint, he would get the shade of brown he desired. If Hamza decided to take this approach, how many gallons of white paint would Hamza have to buy to lighten the 8 gallons of brown paint?
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Answer:
1 gallon of white paint
Step-by-step explanation:
correct me if im wrong
Which angle number is a vertical angle to ∠IHK?
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Somebody please help.
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Answer:
310°
Step-by-step explanation:
I would assume it's asking about the other measure of angle ABC which is 310° because the more sensible angle that is already labeled.
360-50=310
Answer:
C
Step-by-step explanation:
5. A new cable company charges its customers by the number of channels they order.
The data shows the cable packages ordered the most.
Which linear equation best represents the model?
A. y=1/3x+7
B. y=3x+20
C. y=1/3x+20
D. y=3x+7
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Which ratio has the same unit rate as 15 : 9?
A. 9 : 5
B. 10 : 6
C. 16 : 10
D. 25 : 18
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Answer:
16:10
Step-by-step explanation:
15:9 is the same as 5:3 when simplified
If you multiply both by 2 it would be 10:6
So 15:9 and 10:6 both have the same ratio of 5:3
5. A picture measures 40 cm by 50 cm. A 7.5-cm-wide mat goes around the picture. Calculate the area of the mat.
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731.25
To get the answer you would do 47.5 x 57.5
Then subtract 40 x 50.
The area of the square is 18 times the area of the triangle.
Work out the perimeter of the square.
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Answer:
The Answer would be 9.
Step-by-step explanation: The triangle would get an area of 2 and 18*2 is 36 which is the area of the square. Divide by 4 to get the answer of 9.
The perimeter of the square is 24 units.
What is the perimeter of the square?The perimeter of a square is defined as the addition of the lengths of the square.
The perimeter of a square = 4a
Where a is the length of the side of the square
Given that
The area of the square is 18 times the area of the triangle.
The area of the triangle = (1/2)height × width
The area of the triangle = (1/2)(5/8)(32/5)
The area of the triangle = 2 units²
The area of the square = 18×2 = 36 units²
Let a is the length of the side of the square
The area of the square = a² = 36
So a = 6
The perimeter of a square = 4a = 4(6) = 24
The perimeter of a square = 4(6)
The perimeter of a square = 24 units
Learn more about the Perimeter of the square here:
https://brainly.com/question/11495285
#SPJ5
The question seems to be incomplete the correct question would be
please help am smol brain
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Answer:
A
Step-by-step explanation:
In the proof, it says that MO is congruent to MO, <PMO is congruent to <NMO, and <POM is congruent to <NOM. We can locate these angles and side to find that these congruent angles surround the side. Therefore, the congruent relation is ASA (angle-side-angle) postulate
Answer:
a. ASA Postulate
Step-by-step explanation:
The proof is using an angle, a side, and an angle, in that order, to prove two triangles congruent, so the missing reason in ASA Postulate.
Answer: a. ASA Postulate
will mark brainliest
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Answer:
It would be b
Step-by-step explanation:
Answer:
Answer choice 3
Step-by-step explanation:
I REALLY REALLY NEED HELP. I WILL MARK BRAINLIEST FOR THE BEST ANSWER!!! Question: What are the dimensions of a box with minimal surface area that has a volume of 64000 cm^3? AND REMEMBER, PLEASE SHOW ALL WORK NECESSARY. THANKS.
God Bless :)
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9514 1404 393
Answer:
40 cm × 40 cm × 40 cm
Step-by-step explanation:
Since this is in the high-school math forum, we assume that you're not intended to use calculus to determine the answer. All three dimensions are open for variation, so we'll try to use some logic to determine a reasonable solution.
The dimensions of a box are interchangeable with respect to their effect on surface area. You can see this in the area formula:
A = 2(LW +LH +WH)
That is, no particular dimension makes more or less contribution to surface area than any other. This suggests that the minimum area will be obtained when each dimension is equal to the others. That is, a cube has the minimum surface area for a given volume.
The volume of a cube in terms of its edge dimension s is ...
V = s³
So, the edge dimension is ...
s = ∛V = ∛(64000 cm³) = 40 cm
The dimensions of the box are 40 cm × 40 cm × 40 cm.
_____
Calculus method of Lagrange Multipliers
We want to minimize A=2(LW +WH +LH) subject to the constraint that LWH = 64000. We can write the Lagrangian as ...
L = 2(LW +WH +LH) +λ(LWH -64000)
We want to set all of the partial derivatives of L to zero.
dL/dL = 0 = 2(W+H) +λWH
dL/dW = 0 = 2(L+H) +λLH
dL/dH = 0 = 2(L+W) +λLW
dL/dλ = 0 = LWH -64000
Solving the first two equations for λ and setting the results equal, we have ...
-2(W+H)/(WH) = λ = -2(L+H)/(LH)
Multiplying by H/(-2) gives ...
1 +H/W = 1 +H/L ⇒ W = L
Similarly, solving the 2nd and 3rd equations for λ and setting the results equal, we have ...
-2(L+H)/(LH) = λ = -2(L+W)/(LW)
1 +L/H = 1 +L/W ⇒ H = W
So, now we know that L = W = H, which is the assumption we started with in our "logical" answer.
Answer:
Step-by-step explanation:
By the arithmetic-geometric mean inequality, surface area of any rectangular parallelpiped satisfies
2(xy+yz+zx)≥2(3)(x2y2z2−−−−−−√3)=6V23.
On the other hand, a cube with side lengths V13 has surface area
2(V13V13+V13V13+V13V13)=6V23.
Hence the cube does indeed have minimum surface area
Solve the inequality for n in the equation
14 < n - 3
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14 < n - 3
you take away the -3 by adding 3 so it cancels out and when you do one thing to one side, you do the same to the other side, meaning you add 3 to 14 making it 17
I'll give brainliest to the most reliable and well-explained answer.
It takes 24 feet of fence to surround a square piece of land in Linda’s backyard. Linda wants
to plant flowers everywhere but on the diagonal sidewalk (shaded in the diagram below).
Note that there is 1 foot of sidewalk along two sides of the square as indicated in the
diagram below. What is the area of the sidewalk?
I'll give brainliest to the most through and reliable answer.
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Answer:
Option B. 5.5 ft²
Step-by-step explanation:
Perimeter of the square piece of land = length of fence required
4(length of a side of the square) = 24 ft
Length of a side = 6 ft
Area of the square land = (Side)²
= 6²
= 36 square ft
Area of the side walk = Area of the square - [Area of two triangles separated by the sidewalk]
= 36 - [1/2 (Area Of The Sqaure) + 1/2 (Base) (Height) ]
= 36 - [36/2 + 1/2 (6 - 1) (6 - 1)]
= 36 - (18 + 12.5)
= 36 - 30.5
= 5.5 ft²
Therefore, Option B. is the correct answer.
Answer:
5.5 ft^2.
Step-by-step explanation:
The length of each side of the square piece of land = 24 / 4 = 6 feet.
Total area of the land = 6^2 = 36 ft^2.
There are 2 triangular areas each side of the path.
Area of the top triangle = 1/2 * 6^2 = 18 ft^2.
Area of the bottom one = 1/2 * 5^2 = 12.5 ft^2.
So the area of the path = 36 - 18 - 12.5
= 36 - 30.5
= 5.5 ft^2.
How may cups are in 3 gallons
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Write the equation of a line that passes through the point (-2,3)and is parallel to the line y=2x-5
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Answer:
y=2x+3
Step-by-step explanation:
Help me y'all plz and thank you
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Answer:
1. 3
2. 20
3. 240
4. 1600
Answer: 1863
Step-by-step explanation:
I have a pic of the question
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Answers anyone ??? Helppp
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Answer:
SAA
Step-by-step explanation:
we know two pairs of congruent angles and one pair of congruent sides
the order depends on if the side or angle is between the two sides or angles or if it is outside them
in this case the side is outside of the two angles so its SAA
Lucas has five buttons in a container. Each button is a different shape. There is a star, an oval, a hexagon, a circle, and a heart. He picks one button, replaces it, and then picks another button.
The sample size for this compound event is
.
Suppose one square-shaped button is added to the container. If Lucas repeats the same picking process, then the sample size would be
.
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Answer:
5
Step-by-step explanation:
Because it just is
Answer:
25 And 36
_________
Did The Test. Hope This Helps :)
Which fraction is equivalent to StartFraction 2 Over 6 EndFraction?
(im to lazy ) : )
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Answer:
1/3
Step-by-step explanation:
2/6
divide both by 2 because they're both even
2/2=1 6/2=3
1/3
would you consider teaching algebra 1 in high school in the future? Write an essay explaining why. I'll mark brainliest .
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Answer:
Would you consider teaching high school algebra 1? I would not for many reasons. One for example is the students, you need to make up a plan to make sure the students don't fall asleep while I am teaching. Also I would not because you have to learn the math too and it would be really hard. Lastly I would not want to be rude to the students and it is a lot of stress working to make them happy and myself happy. Those are the reasons why I would not want to teach High School algebra 1.
Step-by-step explanation:
Hope this helps you and can I have a brainliest maybe?
3. Which are the next three terms
in the geometric sequence 16, 8, 4, 2, ...?
A 1,0, 1
B
С
1,
0,
2, 4
D
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Answer:0, -2, -4
Step-by-step explanation:
Count down by 2s
To repair computers, Computer
Fixers charges $125, plus $18 per
hour. Gadgets R Us charges $200,
plus $12 per hour. Determine the
number of hours for which the
computer repair shops will cost the
same.
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Answer:
12
Step-by-step explanation: not 12
is this a function or no I dont think it is but I want to be sure
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Answer:
You are correct it is not a function
Step-by-step explanation:
The reason is if you look in the x place (x,y) that is the input in this situation and you know a function can only have one output for each input and in this case we see that -3 has two outputs 1 and 5. Also -3 and 3 are two different inputs so if it was a debate between those two it would be a function.
If a bag contains 12 apples , 4 bananas, and 8 oranges, what is the part to whole ratio bananas to all fruit
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Answer:
4:24
Step-by-step explanation:
Monika has 67 stamps in her collection. To expand the collection, she is planning to buy some books of stamps that have 14 stamps each. All of the books cost the same. Monika is not sure yet about the number of books of stamps she wants to buy, but she has enough money to buy up to 5 of them. Write a function to describe how many stamps Monika can have. Let x represent the number of books of stamps Monika buys. Find a reasonable domain and range for the function.
A) f(x) = 67x + 14
D: (1,2,3,4); R: (81, 95, 109, 123, 137)
B) f(x) = 14x + 67
D: (0, 1, 2, 3, 4, 5); R: (67, 81, 95, 109, 123, 137)
C) f(x) = 67x + 14
D: (5); R: (137)
D) f(x) = 14x + 67
D: (0, 1, 2, 3, 4); R: (67, 81, 95, 109, 123)
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Answer:
A
Step-by-step explanation:
It gave us 5 domains and 5 ranges :)
answer this question
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Answer:
45+ 35 = 80
180 - 80 = 100
180 -100 =80
y = 100
help.help.help.pls.pls
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========================================
Work Shown:
Solve the equation for y
-13y - 5 = 8
-13y = 8+5
-13y = 13
y = 13/(-13)
y = -1
Then use this y value to compute 4y+7
4y+7 = 4(-1)+7 = -4+7 = 3
Take 5 to the other side as a positive number
-13y=13
Divide both sides by -13
Therefore, y is equal to -1
But, the question isn't answered, we need to substitute the value of y into 4y+7, to fully answer the question
With our knowledge that y is equal to -1, the expression becomes
4*-1+7, which is 3
So, your answer is 3
