Answers
Related Questions
find the expression as the cosine of an angle
cos pi/4 cos pi/9 - sin pi/4 sin pi/9
Answers
Answer: cos(13pi/36)
Step-by-step explanation: just did the assignment
Which angle is coterminal with a 645° angle?
A. An angle measuring 265°
B. An angle measuring 75°
O C. An angle measuring 285°
D. An angle measuring 345º
Answers
Answer:
C
Step-by-step explanation:
Coterminal angles are angles that have a common terminal side.
So, given an angle θ, its coterminal angles will always be ±360°. This can be repeated.
We have a 645° angle.
Therefore, all values of the equation:
[tex]645\pm 360n[/tex]
Where n is an integer is coterminal with our original angle.
Letting n = 1 and using the negative case, we acquire:
[tex]\Rightarrow 645-360=285[/tex]
Therefore, an angle measuring 285° is coterminal with a 645° angle.
None of the other options can be reached by adding/subtracting 360.
Therefore, our answer is C.
write an equivalent expression 8(y-7z+1)
Answers
Answer:
8y−56z+8
Step-by-step explanation:
Determine the slope and y-intercept of each linear function below y=x/3-1
Answers
Answer:
Slope= 1/3
y-int: -1
Step-by-step explanation:
Help help help help help help
Answers
Answer:
18.457
Step-by-step explanation:
A scale model of an object has a scale of 1cm : 2ft. The actual object is 11 feet tall. How tall is the model?
Answers
Given:
The scale model of an object has a scale of 1cm : 2ft.
The actual object is 11 feet tall.
To find:
The height of the model.
Solution:
It is given that the scale model of an object has a scale of 1cm : 2ft and the actual object is 11 feet tall.
Let the height of the model be x cm.
[tex]\dfrac{x\ cm}{11\ ft}=\dfrac{1\ cm}{2 \ ft}[/tex]
[tex]x\ cm=\dfrac{1 \ cm\times 11\ ft}{2 \ ft}[/tex]
[tex]x\ cm=5.5\ cm[/tex]
Therefore, the model is 5.5 cm tall.
Sophie needs to determine the amount of water that will fit into her new vase, shown below.
Which combination of geometric shapes can she use to best estimate the vase's volume?
A cone and a hemisphere
A cylinder and a sphere
A truncated cone and a sphere
A truncated pyramid and a hemisphere
Answers
Answer:A truncated cone and a sphere
Step-by-step explanation:
I just did it.
The combination of geometric shapes can she use to best estimate the vase's volume is a truncated cone and a sphere.
Sophie needs to determine the amount of water that will fit into her new vase, as shown below.
What is the volume?
Volume is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface.
We have to determine the combination of geometric shapes can she use to best estimate the vase's volume.
Therefore the combination of geometric shapes can she use to best estimate the vase's volume is a truncated cone and a sphere.
To learn more about the volume visit:
https://brainly.com/question/1972490
#SPJ2
3. Write the equation of the circle with a center at (-6, 1) and an area of 7n.
A Q(x + 6)^2 + (y - 1)^2 = 14
B (x - 6)^2 + (y + 1)^2 = 49
C (x + 6)^2 + (y - 1)^2 = 49
D (x + 6)^2 + (y - 1)^2 = 7
E (x - 6)^2 + (y + 1)^2 = 7
Answers
Answer:
D [tex] (x +6) ^2 +(y-1)^2 =7 [/tex]
Step-by-step explanation:
Center of the circle (h, k) = (-6, 1)
Area of the circle [tex] =\pi r^2 [/tex]
[tex] 7\pi=\pi r^2 [/tex]
[tex] \frac {7\pi}{\pi} =r^2 [/tex]
[tex]r^2=7[/tex]
[tex]r=\sqrt 7[/tex]
Radius [tex] r=\sqrt {7}[/tex]
Equation of circle in center radius form is given as:
[tex] (x - h) ^2 +(y-k) ^2 =r^2 [/tex]
Plugging the values of h, k and r in the above equation, we find:
[tex] [x - (- 6)] ^2 +[y-1 ]^2 =(\sqrt {7})^2 [/tex]
[tex] (x +6) ^2 +(y-1)^2 =7 [/tex]
I am giving brainlest
Which statement best describes the value of 8 ÷ 4 × 7 + (38 – 15)?
a
the product of 4 and 7 divided by 8, plus 38, minus 15
b
the quotient of 8 and 4, times 7, plus the sum of 38 and 15
c
the product of 8 and 4 times 7, plus the difference of 38 and 15
d
the quotient of 8 and 4, times 7, plus the difference of 38 and 15
Answers
Answer:
D is the answer
Step-by-step explanation:
Factorise the expression
Answers
it is not possible
that expression is not factorable with rational numbers
rational means - A number that can be expressed as the ratio of two integers.
Find the surface area of the rectangular prism below.
Answers
Answer:
630 ft
Step-by-step explanation:
(11 * 15) * 2 = 330 ft
(5 * 15) * 4 = 300 ft
330 + 300 = 630 ft
Classify each as a minor arc, major arc, or semicircle!!!!!!!!!!!!
AE:
AEB:
FDE:
FED:
FA:
BDF:
Answers
Answer:
Minor Arc: AE, FA
Semicircle: AEB, FDE
Major Arc: FED, BDF
Step-by-step explanation:
Required
Classify base on the type or arc
Keynote
Minor arcs are less than 180 degrees
Semicircle are equal to 180 degrees
Major arcs are less than 180 degrees
Using the above keynote, we have the following observation
AE: Minor
AEB: Semicircle
FDE: Semicircle
FED: Major
FA: Minor
BDF: Major
Which one is the answer
Answers
Answer:
x = 30 degrees
Step-by-step explanation:
a triangle's angles should all add up together to 180 degrees. Since a right angle is 90 degrees then you have your 60 degree angle that only leaves 30 degrees left.
Answer: A and C
Step-by-step explanation:
A is right because it’s right triangle since it has a right angle. C is also right, x=30 because we have 60 degrees and 90 degrees. 60 plus 90 is 150 and a triangle is equal to 180 degrees 180-150 is 30
what is the median to 132, 183, 191, 237, 251, 277, 279, 334, 448, 599?
Answers
Answer:
264
Step-by-step explanation:
(251 + 277) / 2 = 264
Can somebody please help me with this question will give brsinlest
Answers
Answer:
Angle #1: 115°
Angle #2: 64°
Angle #3: 90°
Angle #4: 106°
Angle #5: 165°
Step-by-step explanation:
you subtract the ones that give you the exterior angle by 180 because it is a supplementary angle. that means that both angles add up to 180. the little square next to angle three means its a right angle. this means it is exactly 90°. the last angle is a little tricky. you need to add up all the angles you have and then you if you get 540 then your answer is correct because all interior angles of a pentagon must add up to 540.
Hope you have a great day and I hope this helped you out!
<3 :- )
3. Which of the following could represent the sides of a right triangle?
Hint: use a? + b2 = c2
Answers
PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!
Answers
-5x+32-20x+48=180
-25x=100
x=-4
What does the math equation y-2=
Answers
Answer:
5
Step-by-step explanation:
your answer is 5 hope it help
Which equation could be used to find the
total cost cif Fernando wanted to buy
8 pencils from the school store?
Answers
Answer:
A. C=0.15*8
Step-by-step explanation:
3 pencils for $0.45, think about how much one pencil costs? so divide 0.45 by 3 and get 0.15 which basically means 1 pencils is 15 cents, multiply that by the amount of pencils fernando wants which is 8 and that's your equation
What is the solution of the system of equations? -4x+3y=-12 -2x+3y=-18
*Note: I believe it has no solution, but I would like to make sure. Thank you all for your help.
Answers
Answer:
Step-by-step explanation:
I've enclosed a graph to show you that there is one solution.
-4x + 3y = - 12
- 2x + 3y = - 18 Subtract
-2x = 6 Divide by - 2
-2x/-2 = 6/-2
x = - 3
- 4x + 3y = - 12
-4(-3) + 3y = - 12
12 + 3y = - 12
3y = - 12 - 12
3y = - 24
3y/3 = - 24/3
y = - 8
Which is exactly what the graph shows.
You can tell immediately that this has 1 or more solutions just by looking at the number in front of x and y in each each equation.
It's always a good idea to graph a question like this one. Desmos is a pretty good tool to use if you don't have a graphing calculator.
The y's are the same so you are 1/2 way home in saying what you did.
The x's are different so that means you have at least 1 solution.
(2+√2) is
an integer
a rational number
an irrational number
none of these
Answers
Answer:
Irrational number
Step-by-step explanation:
√2 is an irrational number.
So, when a integer or rational number is added to irrational number, we will get irrational numbers
2 + √2 is an irrational number.
How much money is 15% of $ 14.99
Answers
Answer:
The discount is $2.25 and the final price will be $12.74
Step-by-step explanation:
Discount = Original Price x Discount %/100
Discount = 14.99 × 15/100
Discount = 14.99 x 0.15
You save = $2.25
Final Price = Original Price - Discount
Final Price = 14.99 - 2.2485
Final Price = $12.74
hope this helps and is right. p.s. i really need brainliest :)
Answer:
$12.74
Step-by-step explanation:
15% of 14.99 dollars
14.99-2.25=12.74
Final answer=12.74 dollars
Please I need help on Tis question
Answers
Answer:
Step-by-step explanation:
The answer is D, the function approaches 1 as x approaches +- infinity. We can divide each term by x^2. We will get the following:
[tex]\frac{1-4/x^2}{1-9/x^2}[/tex]
as x goes to infinity, the -4/x^2 and -9/x^2 go to 0. To the equation just becomes 1/1. So the answer is 1.
What kind of shape is this? O A. Not a polygon O B. Triangle O c. Quadrilateral O D. Pentagon
Answers
Answer:
Add the picture please :) i will go on your page and answer when you add the image. Remember to always double check if you have the image clipped on whenever you ask something that needs an image, thank you.
is 10,26,28 a right triangle
Answers
Answer:
No
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
10^2 + 26 ^ 2 = 776
28^2 = 778.
since 776 is less than 778, it is an acute triangle, not right.
techwiz Electronics makes a profit of $35 for each MP3 players sold and $18 for each DVD player sold. Last week, techwiz so the combined total of 128 MP3 and DVD players let X be the number of MP3 players techwiz sold last week write an expression of the combined total profit in dollars Tech whiz made from MP3 and DVD player
Answers
Answer:
128 = 35x + 18y
Step-by-step explanation:
total = 35(MP3) + 18(DVD)
128 = 35x + 18y
You claim you are psychic and can predict a coin flip 60% of the time. To test your claim, your friend has you predict a coin flip and then records whether or not you are correct. You do this 200 times and find you are right 135 times. Considering a null hypothesis that you are correctly predict the coin flip 60% of the time, using a hypothesis test, which of the following statements is most accurate?
a. You cannot reject the null at the 10% level of significance.
b. You can reject the null at the 10% level of significance, but cannot reject the null at the 5%, 2%, or 1% level of significance.
c. You can reject the null at the 10% and 5% level of significance, but cannot reject the null at the 2%, or 1% level of significance.
d. You can reject the null at the 10%, 5%, and 2% level of significance, but cannot reject the null at the 1% level of significance.
e. You can reject the null at the 10%, 5%, 2%, and 1% level of significance
Answers
Answer:
You can reject the null at the 10% and 5% level of significance, but cannot reject the null at the 2%, or 1% level of significance. ( D )
Step-by-step explanation:
let : P = 0.6
x = 135 , n = 200
p = 135 / 200 = 0.675
H0 : P = 0.6
Ha : P ≠ 0.6
performing the test statistic = ( 0.675 - 0.6 ) / [tex]\sqrt{\frac{0.60(1-0.60)}{200} }[/tex]
= 0.075 / 0.0346 ≈ 2.17
p-value = 2 * P ( Z > - 2.17 ) ( using excel function ; NORMSDIST )
= 2 * 0.015 = 0.03
What is y if x= -2 and y = 1/2x?
if you do links i will band you
Answers
y=1/2(-2)
y =1/-4
what is the greatest common factor of 36x and -20??
Answers
Answer:
6x
Step-by-step explanation:
there's no specific method just follow times table
What is the length of AP?
1) 10
2) 12
3) 17
4) 24
Answers
Answer:
4) 24
Step-by-step explanation:
OA = OB = 7 ( radius )
OP = OB + BP
= 7 + 18
OP = 25
In triangle OPB,
By Pythagoras theorem,
( OP )² = ( OA )² + ( AP )²
( AP )² = ( OP )² - ( OA )²
= 25² - 7²
= 625 - 49
( AP )² = 576
AP = 24
Answer:
your answer will be 24
Step-by-step explanation:
∠OAP=90°
OA=OB=7
[tex]OA^{2} +Ap^{2} =OP^{2} \\\\7^{2} +Ap^{2} =(7+18)^{2} \\\\Ap^{2} =25^{2} -7^{2} =576\\\\AP=\sqrt{576} =24\\\\Ap=24[/tex]
hope it helps
have a great day!!