Answers
Answer:
Y = theta = 32.68
Step-by-step explanation:
Formula
y^2 = x^2 + z^2 - 2*x*z * cos(theta)
Givens
y = 55
theta = ?
z = 50
x = 90
Solution
55^2 = 90^2 + 50^2 - 2*90*50 cos(theta)
3025 = 8100 + 2500 - 9000 cos(theta) Combine the right
3025 = 10600 - 9000 Cos(theta) Subtract 10600
3025 - 10600 = -9000 Cos(theta)
-7575 = - 9000 Cos(theta) Divide by - 9000
-7575/-9000 = cos(theta)
0.8417 = cos(theta)
cos-1(0.8417) = theta
theta = 32.68
Related Questions
choose the multiples of 5 a. 7,12,17,22 b.10,25,45,60 c.14,23,32,41 d.9,14,19,24
Answers
Answer:
The multiples of 5 are (b.10,25,45,60)
1/169=1/3 what's the exponent? how do i figure it out?
Answers
Answer:
Step-by-step explanation:
We have been given an equation . We are asked to write the missing exponent for our given equation.
We can see that 169 is square of 13, so we can write left side of our equation as:
We can raise 1 to any power and answer will be same.
Raising 1 to 2nd power, we will get:
Since both numerator and denominator is raised to 2nd power, so we can raise to 2nd power as:
Therefore, our missing exponent is 2.
This is just a question I want u guys to answer cause 99% of the adult population don't know the answer to this question.
Question: 50 divided by 1/2 =?
I already know the answer and rule, lol
Answers
also can i have a brainliest
Evaluate each expression for g = -7 and h = 3 and match it to its value.
Answers
Answer:
1) 10
2) 46
3) 2
4) -21
5) -10
6) -4
Answers + Explanations:
For each substitute g = -7 and h = 3 into the equation:
1.
[tex]h - g\\3 - (-7)\\3 + 7\\10[/tex]
2.
[tex]g^2 - h \\(-7)^2 - 3\\49 - 3\\46[/tex]
3.
[tex]g + h^2\\-7 + 3^2\\-7 + 9\\2[/tex]
4.
[tex]gh\\(-7) * 3\\-21[/tex]
5.
[tex]g - h\\-7-3\\-10[/tex]
6.
[tex]g + h\\-7 + 3\\-4[/tex]
Sarah is going to the store to buy bread for a picnic. She needs twice as many slices of bread than cheese slices. She has 24 cheese slices. If each bag of bread contains 12 slices, how many bags of bread does she need to buy?
Answers
Answer:
4 bags of bread
Step-by-step explanation:
55 divided by 11 + 7 x (2+14) please help
Answers
Answer:
The answer is 5 + 112x
Step-by-step explanation:
Simplify each term.
~Hoped this helped~
Answer:
the answe is [tex]\frac{176}{7}[/tex]
Step-by-step explanation: th
Find all possible values of x for which these two triangles are similar.
Answers
Answer:
tip: study
Step-by-step explanation:
A regular pentagon is rotated clockwise about center point P.
Click on all the degrees of rotation that will carry the regular pentagon onto itself.
60°
72
90°
120
1440
180°
240°
270°
288°
300°
324°
360°
Answers
Answer:90
Step-by-step explanation:
Trust me bro
The degrees of rotation that will carry the regular pentagon onto itself is 72,144,216,288
What is a pentagon in geometry?In geometry, a pentagon is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°.
Given here: A regular pentagon is rotated clockwise about center P.
Now Since you have 5 vertices, your starting vertex can land in 5 different starting places and still come up with the same figure. So if you take 360/5 you get 72 degree rotations to each consecutive vertex.
or more specifically 360/5=72
Again therefore the pentagon will coincide itself after every integral multiple of 72
Thus 72, 144,216,288 are the required angles of rotation.
Learn more about a pentagon here:
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B Hector originally had $60 in his bank account. A buying some books, Hector now has 3 of the original $60. How much does Hector now have in his bank account?
Answers
Answer:
I dont really think this is it but i think its 20
Step-by-step explanation:
60 divided by 3 is 20
A company that sold fish for an aquarium had a special one weekend on tetras and angel fish. The store sold a total of 110 of those types of fish over the weekend. The tetras each sold for $0.40 and the angel fish each sold for $1.20. If they made a total of $80 in selling those fish, how many tetras did they sell?
Answers
Answer: They sold 65 tetras.
Step-by-step explanation:
Let x= Number of tetras
y= Number of angel fish.
As per given,
x+y= 110 (i)
0.40x+1.20y=80 (ii)
Multiply 2.5 on both sides of (ii), we get
x+3y=200 (iii)
Eliminate (i) from (iii)
[tex]2y=90\\\\\Rightarrow y=45[/tex]
Put value of y in (i)
[tex]x+45=110\Rightarrow x=65[/tex]
Hence, they sold 65 tetras.
eva is working two summer jobs, making $16 per hour tutoring and $8 per hour clearing tables. Last week eva worked 3 times as many hours clearing tables as she worked hours tutoring hours and earned a total of $80. Graphically solve a system of equations in order to determine
Answers
Answer
y = 3(2) = 6
Thus, she tutored for 2 hours and cleaned tables for 6 hours.
Explanation
These questions are all about writing down mathematically what they are saying in words. Use variables whenever there is an unknown, and try to write equalities based on what is said.
So, taking it one step at a time:
Eva is working two summer jobs,
Cool.
making $16 per hour and $8 per hour clearing tables.
I'm guessing this is $16/hr for tutoring, and $8/hr for clearing tables?
Last week Eva worked 3 times as many hours clearing tables as she worked tutoring hours
Let C = the number of hours Eva worked at clearing tables
Let T = the number of hours Eva worked at tutoring
Last week Eva worked C = 3 * T
and earned a total of $80.
The amount she earned at each place is:
8*C = money from clearing tables
16*T = money from tutoring
8*C + 16*T = 80
Solve a system of equations in order to determine the number of hours Eva worked tutoring last week, X, and the number of hours Eva worked clearing tables last week, Y,
Welp, I guess they wanted X and Y but it doesn't matter. From the equations above we can say:
8*C + 16*T = 80
C = 3*T
That should be enough to solve for:
C = ?
T = ?
Let x = # of hrs spent tutoring, y = # of hrs spent cleaning tables
We know she worked 3 times as many hours cleaning tables as she did tutoring, which implies:
3x = y
Also, her total earnings add up to $80, which implies:
16x + 8y = 80
This gives us the following system of equations:
3x = y
16x + 8y = 80
Let's make the substitution y = 3x into the 2nd equation:
16x + 8(3x) = 80
16x + 24x = 80
40x = 80
x = 2.
Next, plug in x = 2 into the first equation:
y = 3(2) = 6
Thus, she tutored for 2 hours and cleaned tables for 6 hours.
Which area of American life was de-segregated earliest?
1. The armed forces
2. Buses, swimming pools, and other public facilities
3. Public schools and universities
4. Major League Baseball
Answers
Answer:B
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Help me please, Mathematics.
Answers
The number of men and women receiving bachelor's degrees each year has been steadily increasing. For the years 1970 through the projection of 2014, the number of men receiving degrees (in thousands) is given by the equation y=3.9x+441 , and for women, the equation is y=14.2x+319, where x is the number of years after 1970.
Answers
The coordinates of the vertices are (0,0) (5,4) and (7,0). The trapezoid is dilated with scale factor 2 and center (0,0). What are the coordinates of the vertices of the image of the trapezoid?
A.(0,0) (2,4) (5,4) (7,0)
b. (0,0) (6,12) )(15,12) (21,0)
c.(0,0) (4,8) (10,8) (14,0)
Answers
Answer:
i think its c
sorry if im wrong!
Step-by-step explanation:
Classify the following triangle as acute, obtuse, or right.
45"
A. Acute
B. Obtuse
C. Right
D. None of these
Answers
Hoped this help you
The following triangle is right angle tringle. In the following options the option C is correct.
Let the given triangle is XYZ.
Consider that the data for the given triangle XYZ:
∠X=45°
∠Y=90°
∠Z=45°
The right-angled triangle or right angle triangle is the triangle has one of the angle is 90° or a right angle. The right angle triangle is also known as the orthogonal triangle.
In the given triangle the angle are 45°, 90° and 45° of X, Y and Z, respectively,
Since, the given triangle XYZ has one of the angle is right angle, that is angle Y or the triangle XYZ has one of the angle is 90°, that is, ∠y=90°.
Therefore, the triangle XYZ is right angle triangle.
Learn more about Pythagoras Theorem here:
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10. Find the value of d in the similar polygons
below.
Answers
d = (1.5/4.05)7.29 = 2.7
Write the fraction or mixed number as a percent.
3/5
Answers
Answer:
60%
Step-by-step explanation:
Answer:
60%
Step-by-step explanation:
3 fits in to 5 0.6 times. Multiply that by 100.
alll the answers now PLEASE. i will make you the brainliest!
Answers
Answer/Step-by-step explanation:
Decompose each shape, find the volume of each cuboid, and add both volumes you get together.
Recall: volume of cuboid = L*W*H
4. Volume of cuboid 1: L*W*H = 12*10*4 = 480 ft³
Volume of cuboid 2: L*W*H = 12*3*5 = 180 ft³
Volume of the shape = 480 + 180 = 660 in.³
5. Volume of cuboid 1: L*W*H = 11*2*5 = 110 yd³
Volume of cuboid 2: L*W*H = 10*4*2 = 80 yd³
Volume of the shape = 110 + 80 = 190 yd³
6. Volume of cuboid 1: L*W*H = 8*3*2 = 48 in.³
Volume of cuboid 2: L*W*H = 14*2*3 = 84 in.³
Volume of the shape = 48 + 84 = 132 in.³
7. Volume of cuboid 1: L*W*H = 5*3*2 = 30 yd³
Volume of cuboid 2: L*W*H = 6*2*5 = 60 yd³
Volume of the shape = 30 + 60 = 90 yd³
8. Volume of cuboid 1: L*W*H = 12*2*18 = 432 in.³
Volume of cuboid 2: L*W*H = 18*5*6 = 540 in.³
Volume of the shape = 432 + 540 = 972 in.³
9. Volume of cuboid 1: L*W*H = 13*11*4 = 572 ft³
Volume of cuboid 2: L*W*H = 13*6*7 = 546 ft³
Volume of the shape = 572 + 546 = 1,118 ft³
Help me and if you don’t help me and I get low grades my mother will beat me and that’s how I will get bruises so please help me
Answers
Answer:
13/72
Step-by-step explanation:
Step-by-step explanation:
13/72
y>-3x-2
y s 4x-3
how do i graph this?
Answers
Answer:
you can use desmos, it is a online graphing calculator
Step-by-step explanation:
Answer:
hat is this passage mostly about?
Click for the passage, "Studies in Ice."
A. Studying nature
B. Storing and moving ice safely
C. Powering drills with the sun
D. Saving messages in ice
4) A car is 150 inches long. A truck la 75% longer than the car How long is om the truck?
Answers
Answer:
262.5 inches
Step-by-step explanation:
All we need to do is 75% of 150, which is 112.5, then add it to 150 to get our answer!
Angel wants to finish his dining room with quarter round molding. The room is 12’7” by 9’9”. How much molding will he need?
Answers
Determine the solution, if it exists, for each system of linear equations step by step.
a.
(3x + 2y = 6
(13x + 2y = 3
b.
(6x+2y = 8
(3x - y = -2
Answers
Answer:
A. x = -3/10 , y = 69/20
B. x = 1/2 , y = 5/2
Step-by-step explanation:
A]
3x + 2y = 6......eq1
13x + 2y = 3.......eq2
From eq 2 - eq 1
10x = -3
x = -3/10
So,
3x + 2y = 6
3(-3/10) + 2y = 6
y = 69/20
B]
6x+2y = 8.....eq1
3x - y = -2.....eq2
eq2 x 2 and add in 1
12x = 6
x = 1/2
So,
6x+2y = 8
y = 5/2
Sally bought a sweater for $24.99 with a 25% discount. What is the price of the
sweater after the discount?
Answers
There are two ways to do this, the one that makes more logical sense and the faster one
You can first calculate how much is 25%. You do this by $24.99 × 25 ÷ 100
Since you know how much is "discounted", just minus the answer you get above with the original price ($24.99 - $6.2475)
The quicker way is to recognise that "original price" is always 100%. In other words, you can just do 100% - 25% and get 75%. Then, $24.99×75÷100 is your answer.
24.99 Times .75 = 18.74
Drag each equation to the value that makes it true.First gets brainlest
Answers
Answer:
Step-by-step explanation:
h = 20 h = 3/2 h = 12
1/2 * h = 10 h+5/2 = 4 5h = 60
120/h = 10
h-3 = 9
Decide whether the two expressions are equivalent for each problem below.
If they ARE equivalent, explain why.
If they ARE NOT, provide the reason why the two expressions are not equivalent.
A) -8(x+7) and -8x-7
B) 6x and 4x+2
C) 15-4x and - 4x +15
D) 7(x+10) and 7x+70
Answers
Answer:
Step-by-step explanation:
Please help me and thank you formula A= 1/2 (b) (h)
Answers
height: 48 inches
area: 2,880
hope this helps. let me know if you need an explanation :)
height - 48
base (120) x height (48) = 5,760
5760 x 1/2 = (area) 2880
Work out
(1×10−4)+(2×10−2)
Give your answer in standard form.
any awnser would be apriciated
Answers
Answer:
24
Step-by-step explanation:
first the left part: 1x10=10, 10-4=6
Right part: 2x10=20, 20-2=18
And the final 18+6=24
PLEASE HELP,a rectangular prism has a base that is 7 inches wide and 19 inches long and what is the area of the base in square inches?
Answers
Answer:
133
Step-by-step explanation:
I dont trust myself so you shouldnt eirther