Ethan worked for 2 3/4 hours and earned $20.90.
How much would he make if he worked for 7 1/4 hours?
3
6x
21(x + 1) 21(x + 1 )
.
21(x+1)=21x+21?
3*6x=18x
This probability distribution shows a typical grade distribution for a geometry course with 35 students. Find the probability that a student earns a grade of B or C. PLEASE HELPPP
Answer:
0.71
Step-by-step explanation:
You basically add both amount of students that earned a B or C
After doing that you should get 25 in total, therefore leaves you with 25/35
Divide and you basically get your answer
0.71
Answer:
.71
Step-by-step explanation:
What is the equation for the line in slope-intercept form?
Answer:
y = 8x
Step-by-step explanation:
I believe counting up from the origin to the last point gives a slope of 8/1 which there wouldn't be a y-intercept in the equation.
PLZ HELP
Write and solve an equation to find x then find the measure of the unknown angles
Answer:
1)
8x + x = 180
9x = 180
x = 30
2)
x + 2 = 2x - 40
2 = x - 40
x = 42
3)
2x + x = 90
3x = 90
x = 30
4)
3x + 1 = 4x - 25
1 = x - 25
x = 26
Am I correct?
Or not, please
Answer:
No you are not correct.
Step-by-step explanation:
This answer choice is A.
hope this helps!!
Yes.
The positive numbers are greater than the negative numbers.
8 is what percent of 24?
What is 63% of 130?
36 is 15% of what number?
A farmer decides to sell 32 pounds of his small 96 pound potato crop. What percent of the crop did he sell?
A university has 480 female students. This represents 64% of the student body. How many students are enrolled in the university?
Answer:
1, 33.3
2, 81.9
3, 240
4, the farmer sold 33.3 of his crops
5, 750 students are enrolled.
Answer:
1. 8 is 33.3333333% of 24. 2. 63% of 130 is 81.9. 3. 36 is 15% of 240. 4. 30.72% of crops. 5. 750 students
Step-by-step explanation:
Hope this helped you!! Give brainliest.
Sad Ariana Grande Facts/Moments pt.2
Ariana preformed in Pittsburg, Mac millers hometown. Not only did they split up, but he passed. She sang Thank u, next (more emotional than you might think) and was in tears :( i cry inside when i see her like thissss
What is the sin value of 5pi/3
Answer:√(3)/2
hope that helped you:)
please make my answer brainiest as im trying get 4 brainiest answers
5-(-3.8) + 1.5
I don't understand how to work problems like this
Find the value of x.
71°
(10x + 6)°
(13x - 2)°
(8x - 1)
#15
Answer:
7x7/6x4
Step-by-step explanation:
g Find the required probabilities using the exponential density function f(t) = 1 λ e−t/λ, [0, [infinity]). The time t (in years) until failure of a component in a machine is exponentially distributed with λ = 3.5. Find the probabilities that the lifetime of a given component will be less than 1 year, more than 2 years but less than 4 years, and at least 5 years. (Round your answers to three decimal places.) (a) less than 1 year (b) more than 2 years but less than 4 years (c) at least 5 years
Answer:
(a) less than 1 year =0.751488
(b) more than 2 years but less than 4 years = 0.2458
(c) at least 5 years= 0.760331
Step-by-step explanation:
f(t) = 1 λ e−t/λ, [0, [infinity])
First we calculate the probability for an exponential random variable X with parameter λ
P (X= t) = ∫ 1 λ e−t/λ, dt
P (x=t) = e−t/λ,
λ = 3.5
Now P (X< 1 ) = ∫ 1 λ e−t/λ, dt [the limits are (-∞ to 1)]
= e−1/3.5= 0.751488
P ( 2<X< 4 ) = ∫ 1 λ e−t/λ, dt [ the limits are (2 to 4)]
=e−2/3.5- e−4/3.5
= e-0.57142-e-1.142857
= 0.5647-0.31890
= 0.2458
P (at least 5) = 1- P (x=5)
= 1-∫ 1 λ e−t/λ, dt [ the limits are (∞ to 5)]
= 1- e−5/3.5
= 1 - e-1.4285
= 1-0.239
= 0.760331
please help i have no idea
Ariane borrows $200 on a 2−year loan. She is charged 5% simple interest per year. How much interest is she charged for 2 years? What is the total amount she has to pay back?
Answer:
Interest charged over two years: $20
Total amount: $220
Step-by-step explanation:
The formula for simple interest is A = P ( 1 + rt ).
A = 200 ( 1 + (0.05 * 2))
A is the total amount ( interest + principle )
A = 220
P is the principle ( initial amount deposited )
P = 200
R refers to rate (in percent)
R = 0.05
T = time period (in years)
T = 2
What is the equation of the line that passes through the points (-1, 3) and (1, 11)? (5 points)
4x - y = 1
x - 4y = -13
4x - y = -7
4x + y = 1
Answer:
4
Step-by-step explanation:
I am pretty sure its that one
Use the elimination method to solve the following system. 6x – 7y = –8 –x – 4y = –9
(–6, –3)
(0, 4)
(–3, 8)
(1, 2)
For history class, Joe spent 2 hours writing a 4-page report on ancient Egypt. This weekend, he needs to write a 12-page report on the Roman Empire.
If he writes at the same rate, how long will it take Joe to write his report?
Answer:
2hours/4pages
2/4=1/2
1/2=x/12
cross multiply
12=2x
divide by 2 both sides
6=x
6 hours
Answer:
the answer is 6
Step-by-step explanation:
In triangle XYZ, angle Y = 45º and angle Z = 60º. If XZ = 4, then what is XY?
Answer:
[tex]XY = 4.9[/tex]
Step-by-step explanation:
Given
[tex]XZ= 4[/tex]
[tex]\angle Y = 45[/tex]
[tex]\angle Z = 60[/tex]
Required
Determine the measure of side XY
To do this, we make use of sine law. This is as follows:
[tex]\frac{a}{\sin\ A} = \frac{b}{\sin\ B} = \frac{c}{\sin\ C}[/tex]
In this case:
[tex]\frac{4}{\sin(45)} = \frac{XY}{\sin(60)}[/tex]
Cross Multiply
[tex]XY * \sin(45) = 4 * \sin(60)[/tex]
[tex]XY * 0.7071 = 4 * 0.8660[/tex]
Make XY the subject
[tex]XY = \frac{4 * 0.8660}{0.7071}[/tex]
[tex]XY = \frac{3.4640}{0.7071}[/tex]
[tex]XY = 4.89888276057[/tex]
[tex]XY = 4.9[/tex] -- approximated
Cal plans to paint a wall that is 9 feet tall and 9 feet long. He buys a can of paint that covers 100 square feet. Which of the following statements apply?
He will have half a can of paint left over.
He will have less than half a can of paint left over.
He will NOT have enough paint.
He will have exactly enough paint.
Answer:
D
Step-by-step explanation:
that is 100-81
=19
meaning the paint shall be enough
Lines a, b, c, and d are distinct lines in the same plane. Decide if lines a and d are parallel, perpendicular, or if there is not enough information
Answer:
A. Parrellel
Step-by-step explanation:
it is parrellel because if you look between b and c you can
see that it is a parrellel line
PLEASE HELP!!! It’s about exponential functions. I will mark brainliest!!!!!!
Please help guys I need it
Answer:
a= 20
b= 169.7
c= 29.71
Step-by-step explanation:
The formula of a triangle is (h*b)/2
a= (5*8)/2
b= to find the height, you can use the pythagorean theorem 18^2 - 6^2 = square root of 288. Which is 12root 2 or 16.97. (16.97*20)/2
c= using the pythagorean theorem- 11^2 = 7^2 - c^2 = square root 73, or 6root 2, or 8.49. (8.49* 7)/2
what is m% of n please help
m% of n would technically be some amount of n. To find m%, you would have to do n * 0.m to find your answer
Riz got $200 for his birthday. He bought several long tennis rackets that cost $45.50 each. After the purchase he has $18 . Write an equation to find out how many rackets he bought and then find the number of rackets.
Answer:
he has bought 18 rackets.
Step-by-step explanation
papa loves a big juicy peen inside of him
Answer:
4
Step-by-step explanation:
(200-18)/45.50
= 182/45.50
= 4
1) Find the product of -5x2y4 and 3xy3
Answer:
Answer: -15x3y7
Step-by-step explanation:
Answer:
-15x3y7 is the answer
Step-by-step explanation:
The ratio of berries to oranges is 12:5. If there are 25 oranges, how many berries are there
Answer:
60
Step-by-step explanation:
5*5 is 25
then 12 * 5 is 60!
In which situation would it be appropriate to use square feet as a measurement?
Answer:
The correct answer is B ; Karla must determine the area of a floor in her house.
You pick a card at random. What is P(6)? Write
your answer as a percentage.
ejt-vokv-opj join to teach
Answer:
ive seen this before its not to teach what you think stay away from it
Answer:
i thought this was a different language
Step-by-step explanation:
smh
6. What are the dimensions of this matrix?
Answer:
the dimensions will be 2 x 1
Option C is correct option.
Step-by-step explanation:
We need to determine the dimensions of this matrix [tex]\left[\begin{array}{c}2&\sqrt{5} \end{array}\right][/tex]
The dimensions consists of rows and columns in the form. Rows x Columns
In the given matrix the rows are: 2
The columns are: 1
So, the dimensions will be 2 x 1
Option C is correct option.