Answer: B. 13.75
First write out the equation you need to solve
1x - 0.25y = total score
Second fill in the known information
1(15) - 0.25(5) = total score
Now solve your equation
15 - 1.25 = total score
13.75 = total score
Her score for the game will be 13.75. Then the correct option is B.
What is the linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
Jamie plays a trivia game.
She earns 1 point for each correct (W) answer and loses 0.25 points for each incorrect (L) answer.
Then the total points is given as
Total point = W – 0.25L
She gets 15 correct answers and 5 incorrect answers.
Then her score for the game will be
Total point = 15 – 0.25 x 5
Total point = 13.75
Then the correct option is B.
More about the linear system link is given below.
https://brainly.com/question/20379472
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When ringing up a customer, a cashier needs 7 seconds to process payment as well as 1 second to scan each item being purchased.If it takes 21 second storing up a customer, how many items are being purchased?
Answer:
14 items
Step-by-step explanation:
21-7=14
please help me with this equation
Answer:
Option A, 1.7
Step-by-step explanation:
Step 1: Figure out the base
The base of an exponent is the number on the bottom. For example, if the given choice was [tex]50^{2}[/tex], then the base would be 50. However, since we are given [tex]1.7^{3}[/tex], then the was would be 1.7
2. The probability that a car will come to a complete stop at a particular stop sign is 0.4. Assume that the next four cars
arrive at the stop sign are independent of one another. Find each of the following probabilities:
a) None of the four cars come to a complete stop?
Answer:
[tex]P(X = 0) = 0.1296 [/tex]
Step-by-step explanation:
This can be solved using the binomial distribution because the cars arriving at the stop are independent of each other. This means we will use:
[tex]P(X = x) = \binom{n}{x} p^{x} q^{n - x}[/tex]
Where p is the probability of success, q = 1 - p is the probability of failure and n is the number of cars sampled.
p = 0.4
q = 0.6
n = 4
Therefore,
[tex]P(X = 0) = \binom{4}{0} 0.4^{0} 0.6^{4}[/tex]
This is equal to
[tex]P(X = 0) = 1 \times 1 \times 0.1296 [/tex]
[tex]P(X = 0) = 0.1296 [/tex]
(Giving brainliest! Pls have at least one sentence to explain why you chose the answer :) )
Rodney sold 45,612 copies of his book and Beth sold 45,612 x one half copies of her book. Which statement compares the numbers of book copies sold?
A) Beth sold half the number of book copies that Rodney sold.
B) Rodney sold half the number of book copies that Beth sold.
C) Beth sold twice the number of book copies that Rodney sold.
D) Rodney sold the same number of book copies that Beth sold.
Answer:
A
Step-by-step explanation:
Hope it helps
Answer:The awnser is
B
Step-by-step explanation:
because rodney sold half her copies
I have 4 separate questions. Please answer by the end of today , I am having trouble.
1.) Melanie invests $2,500 for 6 months at a rate of 3%. How much money will be in her account at the end of the 6 months?
2.) Shawn makes a 3% commission on boats he sells. How much commission would he make, if he sold a boat that cost $112,000?
3.) Jayden purchased a TV for $960. He has to pay sales tax of 5.25%. Which expression could be used to find the total cost of the TV?
4.) Lacey purchased a kayak. The kayak cost $182 and Lacey used a 15% coupon. What was the price of the kayak after the discount was taken?
Answer:
1.)450.00
2.)336.00
3.)50.40
4.)27.30
Step-by-step explanation:
The volume of water in a tank is modeled by the function y = 1.15x3 – 0.1x2 + 2 where x is the number of minutes after the faucet filling the tank is turned on. What is the y-intercept of the graph, and what does it represent in this context? Choose from the drop-down menus.
Given:
The volume of water in a tank is modeled by the function
[tex]y=1.15x^3-0.1x^2+2[/tex]
where, x is the number of minutes after the faucet filling the tank is turned on.
To find:
The y-intercept and what does it represent in this context?
Solution:
We have,
[tex]y=1.15x^3-0.1x^2+2[/tex]
Substituting x=0, we get
[tex]y=1.15(0)^3-0.1(0)^2+2[/tex]
[tex]y=0-0+2[/tex]
[tex]y=2[/tex]
Therefore, the y-intercept is 2 and it represents the volume of water in a tank before the faucet filling the tank is turned on.
Answer:
The volume of water in a tank before the faucet filling the tank is turned on.
Step-by-step explanation:
Determine the slope and y-intercept of each graph. Then, write the equation of the graph in slope-intercept form. please help
Answer:
slope = 2
y intercept = ( 0 , -1 )
equation:
y = 2x - 1
Step-by-step explanation:
SOMEONE HURRY THIS IS EASY BUT I CANT FIGURE IT OUT. I WILL MARK U AS BRAYNLIST
Answer:
e
Step-by-step explanation:
e
1/4 x + 2/3 y = 5 1/2 x + 3/2 y = 11
Which of the following expressions represents the Multiplicative Property of Equality?
Answer:
3x + 8y = 60 ; x + 3y = 22
Step-by-step explanation:
please help and tell me how you got the answer and I will give brainliest
Answer:
32
Step-by-step explanation:
you need to find out which number is 40% of 80 and to do that you go 40/100 is equal to what (x) over 80- x/80 and then you cross multiply so 100 times x is 100x = 40 times 80 which is 3200 and then divide 3200 by 100 so you get 32
A bag contains 4 yellow balls 5 red balls and 6 blue balls what is the probability of picking a yellow ball
Answer:
4/15
Step-by-step explanation:
there is a total of 15 balls and there is 4 yellow balls
The probability of picking a yellow ball
Probability is the likelihood or chance that an event will occur.
Probability = Expected outcome/Total outcome
If the bad contains 4 yellow balls 5 red balls and 6 blue balls, the total outcome will be 15 balls
if a yellow ball is selected, the expected outcome will be 4
Pr(selecting a yellow ball) = 4/15
Hence the probability of picking a yellow ball is 4/15
Learn more here: https://brainly.com/question/13604758
Joey exercised 5/6 of an hour on Monday and 3/5 of an hour on Tuesday. How much longer did he exercise on Monday?
Answer:
5/6 - 3/5 = 7/30
Step-by-step explanation:
Calculation steps:
Answer:
Step-by-step explanation: he exercised 2\10 more than Monday
16 feet
8 feet
11 feet
? feet
What is the length of the missing side?
feet
Answer:
maybe 5.5 feet ( half of 11)
Help quick 16 points
Answer:
124 child tickets, and 78 adult tickets
Step-by-step explanation:
x=child
y= adult
x+y=202
10x+6y=1708
Multiply eq1 by 6
6x+6y=1212
-4x=-496
x=124
y=78
Hope this helps plz mark brainliest :D
Kevin buys 1 T-shirt for $12.99, 1 pair of jeans for $54.00, and a jacket for $125.00. What is the total cost of the items Kevin purchases?
Answer:
$191.99 is the total cost of Kevin's purchases.
Answer:
191.99
Step-by-step explanation:
Add 12.99 and 54 to get 66.99, then add 125 to 66.99 to get $191.99.
Please help me :) Will mark brainliest
Answer:
Option D
Step-by-step explanation:
y = x - 4
y = -3x
x - 4 = -3x
Subtract x from both sides;
-4 = -4x
Divide both sides by -4
x = 1
Substitute x;
y = x - 4
y = 1 - 4
y = -3
(x, y) = (1, -3)
HURRYYYY 30 POINTSSS!!!!
Answer:
The graph of a direct variation equation is a line through the origin. The slope of the graph of y = ax is a. through the point (4,6). Write the direct variation equation and find the value of y when x =24.
Step-by-step explanation:
please help me asap
Determine the value of y, if x is – 7.
y= x2 - 9
Answer:
y= -23
Step-by-step explanation:
A bus travels 200 km in 1 hour. What is the speed of the bus? *
Answer:
There might be more than one way to approach this one. Here is my way:
In a word problem, always write down the information you have, clearly identifying what any variables represent. If you don't, it could lead to confusion later.
Let's let b represent the speed of the bus. Don't use a different variable for the speed of the car. Since we know it is 10 km/hr faster, let b+10 represent the speed of the car.
Let t represent the time it takes the bus to travel 200 km. Since the car takes 1 hour less, use t-1 to represent the time it takes the car.
Our basic formula for this problem is distance = rate x time
For the bus, b·t = 200 km
For the car, (b+10)·(t-1) = 200 km Be sure you're clear on these equations. Again, each equation is that vehicles speed times the amount of time it takes. Each vehicle goes 200 km.
If you're sure you understand the two equations, we an go on.
Since both expressions are equal to 200, they are equal to each other, so we can write
bt = (b+10)(t-1) Now multiply on the right side, to remove the parentheses. You probably learned the FOIL method in class.
bt = bt + 10t - 1b - 10 Again, be sure you understand this step before going on. You should do the multiplication yourself to make sure you can do it.
There is a bt on both sides of the equation, so subtract bt from both sides, to simplify things.
0 = 10t - b - 10 (I've written b instead of 1b, since 1b is the same as b)
Now we have an equation with two variables in it, so we can't solve it yet. If we go back, we see that bt = 200. If we divide both sides of this by b , we get t = 200/b. We can put this expression in place of t in our equation.
0 = 10(200/b) - b - 10
0 = 2000/b - b - 10
The fraction makes the equation very difficult to work with, so let's multiply both sides of the equation by b, remembering that we have to multiply every term in the equation by b.
b·0 = b(2000/b) - b·b - b·10
0 = 2000 - b2 -10b
Let's multiply both sides of the equation by -1 and rearrange the terms. This gives us
0 = b2 + 10b - 2000 which we can solve by factoring. You should be able to take it from here. Be sure to answer both questions.
Who solved the problem incorrectly, and where was the first mistake made?
Answer:
B
Step-by-step explanation:
20 × 30 = 600
30 × 6 = 180
5 × 6 = 30
but 20 × 5 doesn't equal 10
Answer: B
explanation: mariah was doing it right until she multiplied 20x5. she put 10, which is wrong. it’s 100
Marie drives 105 miles in 2 hours. How many miles did she go per hour?
Can someone help me with this problem and show the work pls!
Answer:
52 1/2 miles
Step-by-step explanation:
Hope this helps!
The number of miles she goes per hour is 52.5 miles.
What is a unit rate?It is the quantity of an amount of something at a rate of one of another quantity.
In 2 hours, a man can walk for 6 miles
In 1 hour, a man will walk for 3 miles.
We have,
105 miles = 2 hours
Divide both sides with 2.
105/2 miles = 1 hour
1 hour = 52.5 miles
Thus,
52.5 miles per hour.
Learn more about unit rates here:
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Select the correct answer.
Which property of equality was used to solve this equation?
-5x=4
-5x/-5=4/-5
X= -4/5
A.
addition property of equality
OB.
subtraction property of equality
multiplication property of equality
OD.
division property of equality
Answer:
its probably division property if equality
Step-by-step explanation:
because it has division in it
whoever answers correctly gets brainliest
Answer:
it is C 64.8 do you need explanation?
Please help idk what to put for thisss
Answer:
The distributive property tells us how to solve expressions in the form of a(b + c). The distributive property is sometimes called the distributive law of multiplication and division. ... Then we need to remember to multiply first, before doing the addition!
Step-by-step explanation:
In which scenario would demand be elastic?
A.
increased price of a watch brand
B.
increased price of petrol
c.
increased price of salt
D.
increased price of milk
Answer:
a watch brand
Step-by-step explanation:
Answer:
A. increased price of a watch brand
Step-by-step explanation:
The answer is A increased price of a watch brand
Got 100% on the test
PLEASE HELP ITS TIMEDDDD
Answer:
I'm not 100% sure but if I had to pick one I would go with B.
Step-by-step explanation:
Let me know if I'm correct if you decide to pick mine
Is the following graph
an example of a linear
function?
Yes
No
Answer:
no
Step-by-step explanation:
A linear equation is a straight line.
Tyler takes out a $18,000 loan. The loan is for 7 years at 4.5% annual interest. Assuming Tyler only makes the minimum payment each month, how many total loan payments are required for Tyler to pay off his loan?
Answer: 84 payments
Step-by-step explanation:
12 • 7= 84
Which of the following best describes chemical weathering?
A process in which ice wears away at rocks over a long period of time
A series of changes that moves rocks from one area to another
Any small-scale event such as rain or fog
A process that changes the composition of rocks, causing them to break down _____________________________________ pls help meeeeeeeeeeeee
Answer: a process that changes the composition of rocks causing them to break down
Step-by-step explanation:
hopes this helps
Answer:
A process in which ice wears away at rocks over a long period of time.
Step-by-step explanation:
I just took the test and got it correct.
