Answer:
yes, that is correct
Step-by-step explanation:
- (20÷39) = - 0.513
- 0.513 * 1.43 = - 0.734 ~ - 0.75
10 bags of chips and 8 soda cans cost $15. 5 bags of chips and 5 soda cans cost $8. How much does a bag of chips cost? How much does a can of soda cost?
Answer:
One bag of chips costs $1.10
One can of soda costs $0.50
Step-by-step explanation:
1. Create a system of equations (b = bags of chips | s = soda)
10b + 8b = 15
5b + 5s = 8
2. Use the Elimination method by multiplying 5b+5s=8 by -2
10b + 8b = 15
-2(5b + 5s = 8)
=
10b + 8b = 15
- 10b - 10s = -16
(10b and -10b will cancel out, so you will only have s left)
=
-2s = -1
Divide by 2
Soda = 1/2, or $0.50
3. Plug in S (0.50) into an equation above and get B by itself
5b + 5(0.50) = 8
=
5b + 2.5 = 8
- 2.5 -2.5
5b = 5.5
Bag of Chips = $1.10
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
20% of 80 = 40% of ________ ?
Answer: 160
Step-by-step explanation:
Ann started reading a book that is 300 pages long. She reads 40 pages a day. Which function shows how many pages Ann has left after d days?
a) f(d) = 300 − 40d
b) f(d) = 300 + 40d
c) f(d) =300d − 40
Answer:
A should be the answer
Step-by-step explanation:
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:
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
100 PTS NEED HELP ASAP NO GUESSING NO COMING FOR POINTS IF YOU COMING FOR POINTS THATS FINE I JUST NEED THIS HELP!!!
Answer:
it’s A, because it’s an actually x and y equation that’s functional
Step-by-step explanation:
Ok have a great day
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.
For every cup of milk, we use 4 cups of flour. Write a linear equation to represent the relationship.
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:
pls help me
calculate the slope of the line that passes through (3,2) and (-7,4) in a fraction
Answer:
-1/5
Step-by-step explanation:
slope can be found with the equation found in the image.
assign each coordinate with the according variable
x1 = 3 x2 = -7 y1 = 2 y2 = 4
and input the values accordingly.
4 - 2 / -7 - 3 PEMDAS (order of operations)
= 2/ -10 Simplify
= 1/ -5
=-1/5
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)
Determine the value of y, if x is – 7.
y= x2 - 9
Answer:
y= -23
Step-by-step explanation:
What is the value of (32 + 1)">
Answer:
yes
Step-by-step explanation:
Answer:
i have gotten 160.5
Step-by-step explanation:
In what time will a sum of money double itself at 10%?
ease answer this please I need helppp....
Answer:
8 generations
Step-by-step explanation:
Start with $1 and add 10% per generation until you reach $2. (Multiply by 1.1).
$1
$1.10
$1.21
$1.33
$1.46
$1.61
$1.76
$1.94
$2.12
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
please help me asap
A pickup truck that can hold up to 3000 pounds is carrying a big machine that is 300 pounds and a few smaller ones that each weigh 60 pounds
At least how many small machines can you fit so that it will not exceed the weight limit of the truck?
A) no more than 50
B) no less than 50
C) no less than 45
D) no more than 45
Answer:
no more than 45
Step-by-step explanation:
3k-300 leaves u with 2700/60 and you get 45
Answer:
D. no more of 45
Step-by-step explanation:
i took the quick check
whoever answers correctly gets brainliest
Answer:
it is C 64.8 do you need explanation?
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
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:
Which expression is equal to (1.5)3? Select all that apply. A. 5.0625 B. 3.375 C. 4.5 D. 2.25 × 1.5 E. 2.5 × 1.25
Answer:
c
Step-by-step explanation:
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.
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:
https://brainly.com/question/11258929
#SPJ2
when adding two rational numbers tell what the sign of the sum will be if one rational number is positive and one is negative
PLEASE HELP 50 POINTS AND BRAINLIEST FOR WHOEVER ANSWERS CORRECTLY!!! PLEASE HELP FAST!
1. Sharon and Geordi both worked hard over the summer. Together they earned a total of $525. Geordi earned $75 more than Sharon.
(a) Write a system of equations for the situation. Use s for the amount Sharon earned and g for the amount Geordi earned.
(b) Graph the equations of the system on the graph provided
Answer:
s + g = 575
g = 75 + s
g = 325
s = 250
Step-by-step explanation:
Given that :
Total amount earned by Sharon and Geordi = $525
Also, Geordi earned $75 more than Sharon
Let amount earned by Sharon = s
Amount earned by Geordi = g
Equations :
s + g = 575 - - - equation 1
g = 75 + s - - - equation 2
Put g = 75 + s in equation 1
s + 75 + s = 575
2s + 75 = 575
2s = 575 - 75
2s = 500
s = 250
g = 75 + s
g = 75 + 250
g = 325
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
I don’t understand number 1 and I need help solving it?
Answer:
1/4 cup more
Step-by-step explanation:
1/2 + x = 3/4 ===> 0.5 + x = 0.75
-0.5 -0.5
x = 0.25
0.25 = 25/100 = 1/4 cup
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
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:
