Answer:
5
Step-by-step explanation:
15-(2+13-14)×10 (beacuse 14÷7=2)
15-(15-14)×10
15-1×10
15-10
5 ans
find the area hurry plz
Answer:18
Step-by-step explanation: 6x3
the formula for area: parallelogram
Arya saves 30% of his montly paycheck for college. He earned $270 lst month. How much money did Arya save for college?
Answer:
she saved 900 dollars
Step-by-step explanation:
30/100=270/?
30x9=270
100x9=900
Find the solution to each equation mentally or use your calculator. (do the opposite of the number on the left side of the equation)
A: 30+a=40
B: 500+b=200
C: −1+c=−2
D: d+3,567=0
Help me out with this question (geometry)
Answer:
116
Step-by-step explanation:
13x-1 = 2(6x+4)
13x-1 = 12x+8
x=9
Pls help me this is 7th grade math
Answer:
118 degrees
Step-by-step explanation:
180-62 = 118
A game of chance involves spinning a wheel with 4 number on it. The wheel is designed so that the result of each spin Xhas the following probability distribution. 2 3 Result of a spin .x Probability : 0.50
(a) Find and interpret the mean of X.
(b) Find and interpret the standard deviation of x.
(c) It costs a player $5 for a single spin. The player will receive (in dollars) three times the number that appears. So the profit for one play of this game is Yeur 5. What is the mean and standard deviation of 7
Distribution table :
X : ___ 1 _____ 2 _____ 3 ______ 4
P(x) __0.50 __0.25 __ 0.15 ____ 0.10
Answer:
1.85 ; 1.014 ;` 0.55 ; 3.042
Step-by-step explanation:
Probability distribution :
X : ___ 1 _____ 2 _____ 3 ______ 4
P(x) __0.50 __0.25 __ 0.15 ____ 0.10
The mean: E(x) = Σ(X * p(x))
(1*0.5) + (2*0.25) + (3*0.15) + (4 *0.10)
= 1.85
Standard deviation = sqrt(Var(x))
Var(x) = Σ(x²*p(x)) - E(x)²
Var(x) = ((1^2*0.5) + (2^2*0.25) + (3^2*0.15) + (4^2 *0.10)) - 1.85^2
= 4.45 - 3.4225
= 1.0275
Standard deviation = sqrt(1.0275)
Standard deviation = 1.0136567
Standard deviation(X) = 1.014
3.)
Cost of spin = $5
Amount, y to be received = 3 times the number that appears
y = 3x - cost of playing
y = 3x - 5
E(y) = E(3x - 5)
E(y) = E(3x) - 5
Recall :E(x) = 1.85
E(y) = 3(1.85) - 5
E(y) = 0.55
Standard deviation :Sd(y) =
Sd(3x - 5)
3(1.014)
= 3.042
I REALLY NEED HELP? :,)
Answer:
3/7
Step-by-step explanation:
f(x) = -x^2
Find f(3)
Answer:
9
Step-by-step explanation:
f(x) = -x^2
f(3) = -3^2
f(3) = 9
What is the base in the following expression?
Answer: A. 4
Step-by-step explanation: The base number is 4 and the exponent is 5. Hope this helps ^-^.
What is the value of x in the equation below?
Negative 3 minus (negative 8) minus (negative 2) = x
Answer:
D
Step-by-step explanation:
Took the test ;)
Solve the proportion ASAP help do both questions
Answer:
7. 4
8. 7
Step-by-step explanation:
7. [tex] \frac{1}{2} = \frac{x}{8} [/tex]
Cross multiply
[tex] 1*8 = x*2 [/tex]
[tex] 8 = 2x [/tex]
[tex] \frac{8}{2} = \frac{2x}{2} [/tex] (division property of equality)
[tex] 4 = x [/tex]
[tex] x = 4 [/tex]
8. [tex] \frac{3}{x - 3} = \frac{6}{8} [/tex]
Cross multiply
[tex] 3*8 = 6(x - 3) [/tex]
[tex] 24 = 6x - 18 [/tex]
[tex] 24 + 18 = 6x [/tex] (addition property of equality)
[tex] 42 = 6x [/tex]
Divide both sides by 6
[tex] 7 = x [/tex]
[tex] x = 7 [/tex]
sketch the graph y=x^2+2x+3, indicating clearly the coordinates of any intersection and the coordinates of axes
What is the coefficient in the following expression?
5a2-7
Answer:
5
Step-by-step explanation:
coefficeint is the number before the variable
Give each a sum or difference:
a. -12+4=
b. -4+1=
c. 4 - 12=
d. 4+12=
please help me asap will give brainliest
Step-by-step explanation:
The longest side in a triangle is opposite the largest angle, and the shortest side is opposite the smallest angle.
So the smallest angle is <P.
Hope it may help :)..
The shadow of a 60 foot pole is a 100 feet long. What is the angle of evaluation from the end of the shadow to the top of the pole?
Answer:
The angle is approximately [tex]31^{o}[/tex].
Step-by-step explanation:
The description i the given question can be represented with the sides of a right angled triangle.
Applying the appropriate trigonometric function, we have;
Tan θ = [tex]\frac{opposite}{adjacent}[/tex]
In the question, opposite side = 60 feet, and adjacent side = 100 feet.
Tan θ = [tex]\frac{60}{100}[/tex]
= 0.6
θ = [tex]Tan^{-1}[/tex] 0.6
= [tex]30.964^{o}[/tex]
θ = [tex]31^{o}[/tex]
The angle of elevation from the end of the shadow to the top of the pole is [tex]31^{o}[/tex].
A ski lift makes a 35° angle of elevation with the ground and takes passengers on a 6,550-foot ride up a mountain. Charlotte needs to figure out the elevation of the lift. Which equation and diagram can be used to model this problem?
Answer:
Top right one is the answer
Step-by-step explanation:
B :)
The elevation of the lift is equivalent to 11293.1 ft.
What is the angle of elevation?The angle of elevation is an angle that is formed between the horizontal line and the line of sight.
Given is that a ski lift makes a 35° angle of elevation with the ground and takes passengers on a 6,550 foot ride up a mountain.
Assume the elevation to be [x] ft. We can find the elevation as -
sin (35°) = (6550/x)
x = {6550/sin(35°)}
x = (6550/0.58)
x = 11293.1 ft
Therefore, the elevation of the lift is equivalent to 11293.1 ft.
To solve more questions on Angle of elevation, visit the link below-
https://brainly.com/question/29008290
#SPJ2
Standard form of y=7x+10
Answer: 7x-y=10
Step-by-step explanation:
33 divided by a number Q.
Answer:
33/Q?
Step-by-step explanation:
im confused on what the problem is
Help please :)
And tell me the slope please
Answer:
[tex]\frac{ \frac{7}{3}}{\frac{1}{3}}[/tex] is the slope
Step-by-step explanation:
rise over run
benjamin believes that 1/2% is equivalent to 50%. Is he correct? Why or why not?
Answer:
yes because 1 divided by 2 is 0.5 which can be converted to 50%
A 300 room hotel can rent every one of its rooms at $80 per room. For every $1 increase in rent, 3 fewer rooms are rented.
How much should the hotel charge for each room to maximize its daily revenue? What is the maximum daily revenue?
Answer:
The hotel charge for each room to maximize its daily revenue and the maximum daily revenue is explained below in details.
Step-by-step explanation:
So for every $1 hike in price, the number of rooms goes underneath by 1.
So the earnings can be displayed by R(x) = (300-x)(80+x)
From that, you require to subtract 22(300-x) since it takes $22 per occupied room.
AND there is a framed cost of $1000 per day.
So your profit function is P(x) = (300-x)(80+x) - 22(300-x) - 1000
Simplified, this is P(x) = -x2 +242x + 16400.
P'(x) = -2x + 242 Set it = to 0
x = 121 which displayed the number of unoccupied rooms.
P(121) = -14641 + 29282 + 16400 = $31041
You can verify by computing P(120) and P(122) which both even $31040.
Hope this helps.
solve -3x-2y=2, 9x-5y=-28 using the elimination method
The answer is the picture. Hope this helped.
help please. I need
Answer:
the slope is= 3/2
y= (3/2)x + (-4)
witch equation represents a linear function
If light travel at 3 • 10^8 meters per second. How far can light travel in one minute?
Write your answer in scientific notation.
Answer:
300,000,000 per minute
Step-by-step explanation:
3*10⁸
10⁸ = 100,000,000
3*100,000,000 = 300,000,000
What expressions are equivalent to -4/3 p -2/5
Answer:
-3/6
Step-by-step explanation:
integer rules
Someone please help and thank you
Answer:
7 : 3
Step-by-step explanation:
Divide both numbers by 6
Answer:
Step-by-step explanation:
42:18=42/18=7/3=7:3
I hope it help you
this is so easy
What is the measure of the angle? Enter the answer in the box.
Answer: Acute angle
Step-by-step explanation:
because it is at a 62 I think angle
HELP MEEEEE this is so harddd. the picture is above.
Answer:
A)
Step-by-step explanation:
V=1/3([tex]\pi[/tex]r²)h
3* V=1/3(πr²h)*3 to get rid of the 1/3 on that side
3V/(πr²)=(πr²)h/(πr²) to get rid of the πr² on the other side(they cancel out)
3V/(πr²)=h is the final answer so that matches A