Answer:
x = 136, y = 144
Step-by-step explanation:
x+y = 280
y = x +8
use substitution
x + x+8 = 280
2x = 272
x = 136
y= 136+8 = 144
Answer:
the answer is x=136
Step-by-step explanation:
x + y = 280
x + 8 = y (substitute this expression for y)
x + (x + 8) = 280
2x + 8 = 280
2x = 272 -> x = 136
to find y:
x + 8 = y
136 + 8 = y
144 = y
CHECK:
136 + 144 = 280
yes
Solve the system. Tell how many solutions the system has.
3x + 9y= −6
x + 3y= −2
The system has
(select)
solution(s).
Answer:
the system has a solution
Step-by-step explanation:
3x+9y=-6
x+3y=-2
substitute eqtn 2 into 1
x+3=-2
x=1
a container in the shape of a square pyramid is shown below. which formula could be used to determain the value of the container
Answer:
a
Step-by-step explanation:
the volume of a square pyramid is V=1/3bxh
what is the definition of a vertex
Explain and give me the answer please
Answer:
154 because we multiply the 11in and 14 in to get 154 inches so h = 154 inches
Twenty-five students go to lunch. Pizza costs $3 and sandwiches cost $2. Twelve students buy pizza. What is the total amount of money spent on sandwiches?
Answer:
26.
Step-by-step explanation:
Take 25 and subtract 12 from it.
25 - 12 = 13
then take 13 and multiply it by 2.
13 x 2 = 16
pdf Ron, Sue, and Ted arrive at the beginning of a professor’s office hours. The amount of time they will stay is exponentially distributed with means 1, 1/2, and 1/3 hours. (a) What is the expected time until only one student remains? (b) For each student, find the probability they are the last student left. (c) What is the expected time until all three students are gone?
Answer:
a) 0.45 hours
b)
P( Ron ) = 7/12
P( sue ) = 4/15
P(Ted ) = 3/20
c) 1.22 hours
Step-by-step explanation:
Ron , sue and Ted
mean values = 1, 1/2 , 1/3 hours
a) determine the expected time until only one student remains
E(x) = 9/20 = 0.45 hours
b) Probability that each student is the last student left
P( Ron ) = 7/12
P( sue ) = 4/15
P(Ted ) = 3/20
C) Time until all students are gone
= 146 / 120 = 1.22 hours
attached below is the detailed solution
This question is based on the concept of probability.Therefore, the answers are as follows:
(a) 0.45 hours
[tex]\bold{(b) \, P(Ron) = \dfrac{7}{12} ,P (Sue) = \dfrac{4}{15} ,P(Ted) = \dfrac{3}{20}\beta}[/tex]
(c) 1.22 hours
Given:
The amount of time they will stay is exponentially distributed with means 1, 1/2, and 1/3 hours.
According to the question,
The amount of time they will stay is exponentially distributed with means 1, 1/2, and 1/3 hours.
(a) The expected time until only one student remains,
[tex]E(X) = \dfrac{9}{20} = 0.45 \,hours[/tex]
(b) Now, find the probability they are the last student left,
[tex]P(Ron) = \dfrac{7}{12} \\P (Sue) = \dfrac{4}{15} \\P(Ted) = \dfrac{3}{20}[/tex]
(c) The expected time until all three students are gone is,
[tex]= \dfrac{146}{120} \\\\= 1.22 hours[/tex]
Therefore, the answers are as follows:
(a) 0.45 hours
[tex](b) P(Ron) = \dfrac{7}{12} ,P (Sue) = \dfrac{4}{15} ,P(Ted) = \dfrac{3}{20}\beta[/tex]
(c) 1.22 hours
For more details, prefer this link:
https://brainly.com/question/23044118
Find the roots. 2x^2+7x-15=0
Answer
3/2, -5
Step-by-step explanation:
We Just started learning thus stuff and I'm a little confused
Answer:
The volume of a prism is the area of the base times the height, V=Bh. The volume of a rectangular prism is the length times width times height, V=lwh. The volume of a cube is the length of one side cubed, V=s3.
Step-by-step explanation:
if you don't get it, then i'll just answer.
Emily and her twin sister Erica were each given $500 for their birthday. Emily deposits her money in an account that pays 4.75% interest compounded annually. Erica deposits her money in a 5% simple annual interest account. After 10 years how much more money will Emily have in her account?
A $22.41
B $45.26
C $250.00
D $295.26
Emily will have $45.26 more money in her account
PLEASE HELP MEEEE OMG SOMEONE HELP ASAP AND ACTUALLY EXPLAIN THEIR ANSWER PLS PLS PLS IM DESPERATE
solve the exponential growth equation:
y=23,000(1+0.5)^35
Answer:
In the pic.
Step-by-step explanation:
Answer:
27386.718479
Step-by-step explanation:
Hope this helped!!!
PLEASE PLEASE PLEASE HELP MEEEE
Please I need help with answering B...
5. The average price of a personal computer (PC) is $949.
Computer prices are approximately normally distributed
with = $100.
a. The least expensive 10% of personal computers cost less
than what amount? $821
b. The most expensive 30% of personal computers cost more
than what amount?
PlS HELP I NEED THIS IN AN HOUR
explain how the relationship between the sides and angles of a triangle can be applied to equilateral triangles.
Answer:
In any triangle: The shortest side is always opposite the smallest interior angle. The longest side is always opposite the largest interior angle.
Step-by-step explanation:
Answer:
shortest side is always opposite the smallest interior angle. The longest side is always opposite the largest interior angle.
Find the following ratios. Write each answer as a fraction and as a decimal rounded to four decimal places.
Answer:
[tex]y = 56.6208[/tex]
Step-by-step explanation:
Given
The attached triangle
Required
Find y
To find y, we make use of the relationship between sides lengths 44 & y and angle 39
The relationship is:
[tex]cos(39) = \frac{44}{y}[/tex]
i.e.
[tex]cos(\theta) = \frac{Adjacent}{Hypotenuse}[/tex]
Make y the subject
[tex]y = \frac{44}{cos(39)}[/tex]
[tex]y = \frac{44}{0.7771}[/tex]
[tex]y = 56.6208[/tex] -- approximated
Help with these pls
Answer:
8. 96
9. ?
10. 1
Step-by-step explanation:
I don't think your showing the whole image. I don't see the goal.
0•1/91+1/1+1•1/91+2•1/91+...+90•1/91 pls help!!
Answer:
it is 2.021978 or 184/91
heart if this helps
It's 2.021978 or 184/91
Evaluate the expression: 2 x 2 x 2 x 2
Answer:
2×2 =4
4×2 =8
8×2 =16
there is ur answer
Answer:
girl it not hard; just count by 2s
Step-by-step explanation:
2 4 6 8 10 12 14 16
or do what the other person did
G00gle could also help
tthanks for point XD
Surface Area = 408m2
(pls help me)
Answer:
17
Step-by-step explanation:
Do the total divide by the sides
Which equation has the solutions x = 2.5 and x = -3 ?
Answer:
Well, you didn't show the equation . However we can generate an equation
by multiplying (x - 2.5) * (x +3)
x^2 -2.5x +3x -7.5 = 0
x^2 +.5x -7.5 = 0
DOUBLE-CHECK
Solving with the quadratic formula:
x = 2.5 and x = -3
CORRECT!!!
Step-by-step explanation:
Please help give me the brainliest answer
Answer:
±[tex]2\sqrt{6}i[/tex]
Step-by-step explanation:
±√24
±√-1 √24
±√24 i
±2√6 i
Plz help me by solving this problem and showing how you got it
Answer:
y =84
Step-by-step explanation:
25/100*Y = 21
100/25 * 25y/100 =21 *100/25
y = 2100/25
y = 84
Suppose that in the inventory problem, the storage cost depends on the maximum inventory size, rather than the average. This would be more realistic if, for example, the company had to build a warehouse large enough to hold the maxi- mum inventory, and the cost of storage was the same no matter how full or empty the warehouse was. Show that in this case the number of units that should be ordered or manufactured to minimize the total cost is q= âfM/k
Answer:
Suppose that in the inventory problem, the storage cost depends on the maximum inventory size, rather than the average. This would be more realistic if, for example, the company had to build a warehouse large enough to hold the maxi- mum inventory, and the cost of storage was the same no matter how full or empty the warehouse was. Show that in this case the number of units that should be ordered or manufactured to minimize the total cost is q= âfM/k
Step-by-step explanation:
Suppose that in the inventory problem, the storage cost depends on the maximum inventory size, rather than the average. This would be more realistic if, for example, the company had to build a warehouse large enough to hold the maxi- mum inventory, and the cost of storage was the same no matter how full or empty the warehouse was. Show that in this case the number of units that should be ordered or manufactured to minimize the total cost is q= âfM/k
Guys help I’m failing math this assignment is 100 points it will boost my grade I’m timed..
Answer:
edf
Step-by-step explanation:
GIVING OUT BRAINLIEST ANSWER!!! HELP ME OUT PLEASEEE
Answer:
10
Step-by-step explanation:
Hope It Helps
BRAINLIEST PLEASE
Soup is on sale at six cans for $3.31. The cost of an individual can of soup is $0.63. How
much do you save per can if you buy six cans and get the sale price?
Answer:
0.47
Step-by-step explanation:
0.63×6=3.78
3.78-3.31=0.47
what is the value of x ?
Answer:
Since we know that the sum of the two angles equal 180, we can add them together to equal 180 degrees.
2x+10+x+26=180
Combine like terms.
3x+36=180
Subtract 36 from both sides.
3x=144
Divide 3 from both sides.
x=48
Hope this helps :)
Step-by-step explanation:
please answer i am giving brainiest and 100 points
Answer:
2x+5
Step-by-step explanation:
The answer is in the question.
2 and x is 2x and plus 5 is +5.
Answer:
2x+5
Step-by-step explanation:
the product 2 of x is 2x plus 5
2x+5
2x + 8 = -4 solve for c
Show work please
Answer: x=-6
Step-by-step explanation:
Given
2x + 8 = -4
Subtract 8 on both sides
2x + 8 - 8 = -4 - 8
2x = -12
Divide 2 on both sides
2x / 2 = -12 / 2
x = -6
NOTE: I assume the questions "solve for c" actually means "solve for x"
Hope this helps!! :)
Please let me know if you have any questions
Miranda's wages are $15 per hour. write a linear equation that gives the wages w in dollars that miranda earns in h hours.
PLEASE HELP !! ILL GIVE BRAINLIEST !! 100 POINTS
Answer:
m= 9
Step-by-step explanation:
63/7
Answer:
The value of each *m* is 9
Step-by-step explanation:
Mark Brainly