8x + 10y = 8
X = -y
Solve the system by substitution
Answer:
Step-by-step explanation:
X = -4 , Y = 4
Suppose you arrive at a bus stop and the bus arrives every 30 minutes. Given that you arrive at time at the bus stop was uniform random, find the probability that you will wait between 25 to 30 minutes.
Answer:
0.167
Step-by-step explanation:
Arrival time of the bus = 30 minutes
We have to find the probability of waiting between 25 to 30 minutes.
From this we have that,
a = 0
b = 30
The solution can be expressed as;
P(25<x<30) = (30 - 25) / (30 - 0)
P(25<x<30) = 5/30
P(25<x<30) = 0.167
0.167 is the probability of waiting between 25 minutes and 30 minutes.
HELP
Find the value of x
Answer:
x=30
Step-by-step explanation:
2x+x+90=180 (anglesome prop.)
3x+90=180
3x=180-90=90
3x=90
x=90/3=30
Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired, whereas the other 40% must be replaced with new units. If a company purchases ten of these telephones, what is the probability that exactly three will end up being replaced under warranty
Answer:
the probability that exact three would be replaced under each warranty is 0.34
Step-by-step explanation:
The computation of the probability that exact three would be replaced under each warranty is as follows
Given that
Submitted under warranty = P = 20%
Replaced with the new units = 40%
So replaced and submitted would be
= 40% × 20%
= 80%
Now let us assume the number of telephones be x for ending up for replacement
Total number of telephones purchased is 10
Now the probability by applying the formula of binomial probability is
[tex]P(X) = n_C_xp^x(1 - p)^{n-x}[/tex]
[tex]P (X = 3) = ^{10}C_3(0.08)^3 (1 - 0.08)^{10 - 3}\\\\= \frac{10!}{3!(10! - 3!)} (0.08)^3(0.92)^7\\\\[/tex]
= 0.34
Hence, the probability that exact three would be replaced under each warranty is 0.34
cup of oil.
A recipe for one batch of cookies uses 2/3
Edward has 1 1/4 cups of oil.
Does he have enough oil to make 2 batches of cookies?
Answer:
Yes he does
Step-by-step explanation:
that would be 4/3
4/3 < 1 1/4
Hold on, our servers are swamped. Wait for your answer to fully load.
Answer:
2 + 2 =
1
1
3 3
3
23+23 is
greater than
114.
So Edward
does not
have enough oil to make 2 batches of cookies.
Step-by-step explanation:
Brainliest to right answer with explanation
Answer:
It has no solutions : The input is a contradiction: it has no solutions
ANSWER QUICK PLEASESSS
Answer:
Step-by-step explanation:
1). y = - 4x + 7
Reflected across what????
if x-axis, then y ⇒ - y
So the answer would be y = 4x - 7
2). y = 2x - 14
3). y = 2x - 8
4). y = 12x + 9
If 200 men can make an embankment 3km long in 25 days, how much overtime per day must 60 men work to complete an embankment 2km long in 32 days, 12 hours being a day's work?
Answer:
Each man would have to work 7.2 overtime hours per day if they wanted to meet the goal.
Step-by-step explanation:
If 200 men can make a 3 km long embankment in 25 days, their work day being 12 hours, to determine the amount of work that each one does, the following calculation must be made, taking into account that 3 km is the same at 3,000 meters:
3000/25 = 120 meters per day
120/200 = 0.6 meters per day per man
0.6 / 12 = 0.05 meters per hour worked per man
Therefore, to determine the extra work time that 60 men should carry out, if they wanted to complete a 2 km long embankment in 32 days, the following calculation should be performed:
2000/32 = 62.5 meters per day
62.5 / 60 = 1.04 meters per day per man
1.04 / 12 = 0.08 meters per hour worked per man
Therefore, that difference of 0.03 meters must be taken into account to determine the extra time of work that these men must carry out, carrying out the following cross multiplication:
0.05 = 12
0.08 = X
((0.08 x 12) / 0.05) = X
(0.96 / 0.05) = X
19.2 = X
Therefore, each man would have to work 7.2 overtime hours per day if they wanted to meet the goal.
evaluate (-1/3)x2/5x(-9)
Answer:
1.2
Let me know if you want me to explain it. :)
Answer:
(-1/3x5/2x(-9)
How many is dollars will you receive for one Japanese yen
Answer:
You will earn about a cent.
Step-by-step explanation:
The actual amount is about 0.0096 dollars, but you can round it out to 0.01 dollars, or 1 cent.
A racecar driver is doing a time trial of a new car on a straight back. The car's distance from the timekeeper is represented by y=293x+50 where x is time in seconds and y is the distance from the timekeeper's position. How many feet from the timekeeper is the race car at the beginning?
Answer:
50 feet
Step-by-step explanation:
The car's distance from the timekeeper us given by :
y = 293x+50
Where x is time in seconds and y is the distance from the timekeeper's position.
The general equation of a line is given by :
y = mx +c
On comparing, we get : c = 50
It means the timekeeper has covered 50 feets at the beginning.
need help simplifying please.
Answer:
14x² + 7y - 22
Step-by-step explanation:
Combine like terms.
5x² - 6y - 22 + 13y + 9x²
5x² + 9x² = 14x²
-6y + 13y = 7y
Reorder the terms.
14x² + 7y - 22
Hope that helps.
Which graph represents the equation y = x-3?
Answer:
The first
Step-by-step explanation:
The intercept is a negative so the line will be going the opposite way
Answer:
c
Step-by-step explanation:
The equation shows that there is a positive slope of 1 and a y-intercept of -3. The only graph that shows those characteristics is c.
help pls is my homework helppppppppp
15 points
The length of one leg of a right triangle is 3 feet more than the other leg. If the hypotenuse is 15 feet, find the length of each leg
Answer:
9 and 12
Step-by-step explanation:
Pythagorean Theorem. One of the most common Pythagorean triples is 3, 4, 5 with 3 and 4 the legs and 5 the hypoenuse. That will make 9, 12, 15 anotther trible because you are tripling the side lengths. 12-9=3 so this triangle works.
Which decimal is less 17.149 or 17.49
Answer:
17.149
Step-by-step explanation:
One fifth of one number and one fourth of a number are added, the result is 29. What is the original number?
Answer:
[tex] \dfrac{580}{9} [/tex]
Step-by-step explanation:
[tex] \dfrac{1}{5}x + \dfrac{1}{4}x = 29 [/tex]
[tex] \dfrac{4}{20}x + \dfrac{5}{20}x = 29 [/tex]
[tex] \dfrac{9}{20}x = 29 [/tex]
[tex] x = 29 \times \dfrac{20}{9} [/tex]
[tex] x = \dfrac{580}{9} [/tex]
Answer: [tex] \dfrac{580}{9} [/tex]
solve for x in this image
Answer:
x=12
Step-by-step explanation:
11x-3 + 5x-9 = 180
16x -12 = 180
16x = 192
x = 12
A computer store bought a program at a cost of $20 and sold it at a selling price of $23
Find the percent markup.
Answer:
15% markup
Step-by-step explanation:
5% markup would be $1. Since 20*5% or 20*.05=1
We can multiply it by 3 to find the percent for $3 markup. Which is 15% or 0.15
Paris had - $11.00 in her checking account. She did a few chores and made $44.50. She decided to pay for her and a friend Jenifer to go to the movies and each ticket costs $6.25. How much money does she have left in her account? Create a number sentence to show how you got your answer
Answer: 43
Step-by-step explanation:
(11+44.50) - (6.25 x 2)
Part D
The zoo plans to have four more female tigers than male tigers. Write an equation relating the number of male tigers, m, to the number of female
tigers, f.
Answer:
[tex]f\,=\,m\,+ \,4[/tex]
Step-by-step explanation:
The relationship between male and female tigers is given by the equation
[tex]f\,=\,m\,+ \,4[/tex]
Answer:
f = m + 4
Step-by-step explanation:
The sum of two numbers is -124. one number is 22 less than the other. Find the numbers
Answer: -51 and -73
Step-by-step explanation:
Let the first number be x.
Let the second number be x-22.
Since the sum of two numbers is -124, this means that:
x + x - 22 = -124
2x - 22 = -124
2x = -124 + 22
2x = -102
x = -102/2
x = -51
Since the second number is x - 22. This will be:
= x - 22
= -51 - 22
= -73
The numbers are -51 and -73
Simplify the expression -2(3x + x)
Answer:
-8x
Step-by-step explanation:
Multiply what's in the parentheses.
HELP ME!!!!
At the soccer party, each player will get 3 of a pizza. If 24 come, how many pizzas are needed?
A 72 pizzas
B 7 pizzas with leftovers
C 8.33 pizzas
D 8 pizzas
Answer:
D 8 pizzas
Step-by-step explanation:
Solve: 5^2 - 0.2 x (8+12) x 1/2
Answer:
23
Step-by-step explanation:
38,477 rounded to the nearest thousand
Answer: i'm pretty sure it's 38,500
Step-by-step explanation:
Evaluate
(0.3)*4= plplpl
Answer:
1.2
Step-by-step explanation:
0.3 * 4
= 3 * 0.1 * 4
= 3 * 4 * 0.1
= 12 * 0.1
= 1.2
Rate the following bank accounts from most to least liquid: CD, savings account, checking account, money market account. a. CD, savings account, checking account, money market account b. Savings account, checking account, CD, money market account c. CD, money market account, savings account, checking account d. Checking account, savings account, money market account, CD Please select the best answer from the choices provided A B C D
Answer:
Checking account, savings account, money market account, and CD.
Step-by-step explanation:
Answer:
option D
Step-by-step explanation:
took the test on edge
Help please writing equations points !!
Answer:
last one
Step-by-step explanation:
2.50h+10=31.25
because
2.50*h tells you how much you pay for the hours the dogs is at the daycare
10 is you pay for pick-up
31.25 is your total
Which statement is true?
A) | -2.1| = -2.1
B) |2.1| = -2.1
C)|2.1| = -2.1
D) | - 2.1| = |-2.1|