Answer:
B
Step-by-step explanation:
Answer
it is b 30 was the best estimate
Hey so I need some help.
Is this the right answer? Or is it different? Thanks for any help <3
Answer: Yes, your answer would be correct.
Step-by-step explanation:
Reason:
y= -1/2(2) + 11 = 10
y = -1/2(4) + 11 = 9
y = -1/2(6) + 11 = 8
y = -1/2(8) + 11 = 7
All of the values are correct when plugged in.
7. A hospital supply room only has a 70% hydrogen peroxide solution and a 90% hydro-
gen peroxide solution. How many liters of each should be mixed to obtain 50 liters
of a 85% solution? You must set up an equation and solve to receive credit.
Answer: 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.
Step-by-step explanation:
Let x = Quantity of 70% hydrogen peroxide solution.
y = Quantity of 90% hydrogen peroxide solution.
To obtain: 50 liters of a 85% solution.
x+y =50 (i) (Total quantity of solution)
0.70x+0.50y=0.85(50) (Total quantity of hydrogen peroxide)
⇒ 0.70x+0.50y= 42.5 (ii)
Multiply 0.70 to (i) , we get
[tex]0.70x+0.70y=0.70(50)\\\\\Rightarrow\ 0.70x+0.70y=35\ \ \ \ (iii)[/tex]
Subtract (iii) from (ii), we get
[tex]0.20y=7.5\\\\\Rightarrow\ y=\dfrac{7.5}{0.20}\\\\\Rightarrow\ y=37.5[/tex]
Put value of y in (i) , we get
[tex]x+37.5=50\\\\\Rightarrow\ x=50-37.5\\\\\Rightarrow\ x= 12.5[/tex]
Hence, 12.5 liters of 70% hydrogen peroxide solution and 37.5 liters of 90% hydrogen peroxide solution is required.
Write the rate as a unit rate. 44 points in 4 quarters
Answer:
44 p points in 4 quarters = llets per Qtr.
Find the total perimeter of the composite figure.
>30 in
Plz HURRY
Answer:
100
Step-by-step explanation:
because if 3 circles wide is 30 in then 2circles wide is 20 and 30+30+20+20 =100
Enunciado:Si una empresa determina que sus costos obedecen a un modelo lineal y además sabe que si produce $10$ unidades sus costos totales son de $4000$ dólares y que si produce $15$ unidades sus costos ascienden a $5000$ dólares, entonces la función que modela sus costos totales es:
Responder:
y = 200x + 2000
Explicación paso a paso:
Deje que la ecuación lineal se exprese como y = mx + c
m es la pendiente
c es la intersección
Si la empresa produce $ 10 unidades, sus costos totales son $ 4000 dólares y si produce $ 15 unidades sus costos ascienden a $ 5000 dólares, entonces podemos representar esto como puntos de coordenadas;
(10,4000) y (15,5000)
Conseguir la pendiente
m = 5000-4000 / 15-10
m = 1000/5
m = 200
Obtener la intersección c
Sustituya m = 2000 y el punto (10, 4000) en la fórmula y = MX + c
4000 = 200 (10) + c
4000-2000 = c
c = 2000
Sustituya m = 200 y c = 2000 en la ecuación y = mx + c
y = 200x + 2000
Por tanto, la expresión lineal requerida es y = 200x + 2000
Drew earns money washing cars for his neighbors on the weekends. Drew charges a set rate for each car he washes.
The points on the following coordinate plane show how much Drew charges for 2,5, and 8 cars.
How much does Drew charge for
4 cars?
Answer:
The answer is 30
I can't explain because the explanation is long
How did the Pan-African movement lay the foundation for Kenya's independence in 1963?
Answer:
The British controlled Africa, but feelings of nationalism started by the pan Africa movement lead to more and more people in Africa wanting their independence. ... Nationalism lead to the Kenyans feeling that their land was taken unfairly. Eventually, conflict led to independence.
Step-by-step explanation:
buffy ate 100 fries in 5 minutes find her fry-eating rate in fries per minute
Answer:
20 fries per minute.
Step-by-step explanation:
If you express the number of fries per minute as 100/5 (as there are 5 minutes and 100 fries), assuming she ate at the same rate per minute, she had 20 fries per minute.
To check, multiply 20 by 5, in order to find out her fries per 5 minutes. It should be equal to 100.
Answer:
20 Fries per minute
Explanation:
20 fries x 1 minute = 100 fries in 5 min
A twizzler factory makes regular 8in, king size 10in, extra long 16in, and snack size 3in twizzlers. Before packaging the candy, the size is checked and any pieces that have a percent error of 1.5% or more are rejected. Would every size of twizzler be rejected for being 0.14in too short? Why or why not?
Answer:
Step-by-step explanation:
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The box plot shows the time it takes you and your classmates to get to school. What is the median time spent traveling to school?
A.) 6 minutes
B.) 12 minutes
C.) 16 minutes
D.) 24 minutes
Answer:
B 12
Step-by-step explanation:
I got it right
Solve for x.
X + 142
135°
Answer:
X=-7
Step-by-step explanation:
X + 142=135°
X=135-142
X=-7
So the value of X is -7
Jermaine buys T-shirts for $6 each and marks up the price by 45%.
How much does Jermaine charge for each T-shirt (with the mark-up)?
Answer:
8.7
Step-by-step explanation:
6*1.45=8.7
can someone please help!! I don't understand so if you give me an explanation ill make you brainiest
Answer:
so what it is asking you is if there are so many minutes that the hamburgers are being brought out at is how fast it can take the workers to get out as many hamburgers. so at the rate of 1 minute they can get 1 and a half wrappers sold with in one minute and so forth. hope this helps
Step-by-step explanation:
Answer:
ougivkvy
Step-by-step explanation:
51% of the tickets sold at a school carnival were early-admission tickets. If the school sold 100 tickets in all, how many early-admission tickets did it sell?
Answer:
51 were the total number of the tickets sold at a school carnival were early-admission tickets.
Step-by-step explanation:
Total number of tickets sold by = 100
Let [tex]x[/tex] be the early-admission tickets sold by the school.
As 51% of the tickets sold at a school carnival were early-admission tickets.
so
[tex]x=\frac{51}{100}\times 100[/tex]
[tex]= 51[/tex]
Therefore, 51 were the total number of the tickets sold at a school carnival were early-admission tickets.
Pension = 12% of salary
Health Insurance = .3% of salary
Disability Insurance = 0.4% of salary
If Jacob's total contract with benefits is worth $48,814.20, what is his salary
Answer:
Salary = $43,313.40
Step-by-step explanation:
Let his salary be x.
Now we're told that;
Pension = 12% of his salary = 0.12x
Health Insurance = 0.3% of salary = 0.003x
Disability Insurance = 0.4% of salary = 0.004x
Since his total contract with benefits is worth $48,814.20
This means that;
x + 0.12x + 0.003x + 0.004x = 48814.2
1.127x = 48814.2
x = 48814.2/1.127
x = $43,313.40
Find the slope of the line. Use the "/" to make a fraction
Answer:
-1/6
Step-by-step explanation:
The slope is negative because it's going left. If you count the spaces between the points, they go back 6 and up 1, making it -1/6
3y - x = 2
3y + x = 16
{y,x}={3,7}
hope this is helpful :)
Complete this table so that the cost per banana remains the same:
The value of a is $
Question Blank
type your answer...
.
The value of b is $
Question Blank
type your answer...
.
The value of c is $
Question Blank
type your answer...
.
The value of d is $
Question Blank
type your answer...
.
The value of e is
Question Blank
type your answer...
bananas. The value of f is
Question Blank
type your answer...
bananas.
Can I get some help? Pls?
Answer: C, 3158
Step-by-step explanation:
We are given the equation [tex]h(x) = -49x-125[/tex] and we are given the hint to substitute [tex]h(-67)[/tex] into the equation. So let's do that!
[tex]h(-67) = -49(-67)-125[/tex]
we substitute -67 for the values of x.
Then, we simplify.
[tex]= 3283 - 125[/tex]
[tex]h(x) =3158[/tex]
We then subtract the numbers we multiplied together to get out answer: 3158!
Hoped this helped!
Ian has $6000. He wants to buy a car within $1500 of this amount. Define a variable, write an open sentence, and find
the range of car prices. ANSWER ASAP SDJLB
A local charity is selling seats to a baseball game. Seats cost $20 each, and snacks cost an additional $6
each. The charity needs to raise $562 to consider this event a success,
Enter a linear equation that describes the problem.
An equation for the amount of money raised for charity is
seats sold, and y is the number of snacks sold.
= $562, where s is the number of seats sold, and y is the number of snacks sold
Answer:
delet
Step-by-step explanation:
Answer:
Above
Step-by-step explanation:
20s+6y=562
The number of workers, f(x), needed to complete a building is given by the function below where x represents the number of floors in the building.
Select the correct statement.
When f(3) = 18, the 3 represents the the number of workers needed and the 18 represents number of floors.
When f(3) = 18, the 3 represents the number of floors and the 18 represents the number of workers needed.
When f(4) = 48, the 4 represents the number of floors and the 48 represents the number of workers needed.
When f(4) = 48, the 4 represents the the number of workers needed and the 48 represents number of floors.
Answer:
When f(4) = 48, the 4 represents the number of floors and the 48 represents the number of workers needed.
Step-by-step explanation:
Just took the test
m +20= 3
What is m and the inverse operation
Answer:
-17
Step-by-step explanation:
Describe what a positive slope means in a real world situation.
Answer:
A positive slope means that something is increasing. For example if there is a positive slope in the graph of position, that means the position is increasing, or there's a positive velocity. Another example, if the graph of velocity has positive slope, it means it is increasing or there's acceleration.
-1.5 +3.5 +2=
PLEASE HELP my slow brain. :p
Answer:
4
Step-by-step explanation:
-1.5+3.5= 2
2+2=4
Answer:
4
Step-by-step explanation:
−1.5+3.5+2
=2+2
=4
Ashley is taking a road trip to visit her friend. She drives 87.5 miles before taking a break for lunch. After lunch, she finishes the trip without stopping again. The total distance to her friend's house is 200 miles. How far did Ashley drive after lunch? 112.5 miles 113.5 miles 123.5 miles I don't know.
Answer:
Answer 112.5 :)
Step-by-step explanation:
Based on the distance she was able to drive before lunch, Ashley was able to drive 112.5 miles
Ashley has a total of 200 miles to drive in order to get to her destination.
Out of that, she drove 87.5 miles and then rested. The number of miles to go is:
= Number of miles in total - Number of miles driven
= 200 - 87.5
= 112.5 miles
In conclusion, Ashley has driven 112.5 miles.
Find out more at https://brainly.com/question/25282501.
PLEASE! FIRST CORRECT ANSWER GETS BRAINLIEST!!
Consider f(x) = 1.8x – 10 and g(x) = −4
Select the equation that can be used to find the input value at which f (x ) = g (x ), and then use that equation to find the input, or x -value.
A) 1.8x – 10 = –4; x = 10/3
B) 1.8x = –4; x = 1.8 x = -20/9
C) 1.8x – 10 = –4; x = -10/3
D) -4 = x
Answer:B
Step-by-step explanation:
Drag each expression to the correct location on the table.
Place each algebraic expressions next to its corresponding verbal description
Answer:
See attached
Step-by-step explanation:
The answer is pictured below
help me answer this question PLS
Answer:
PQ+QR are the 2 line segments that make up PR
Therefore, 18+9=PR
PR=27
Step-by-step explanation:
- 20y - 7x = -14
10y - 2x = -4
Answer:
(2, 0)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define systems
-20y - 7x = -14
10y - 2x = -4
Step 2: Rewrite systems
10y - 2x = -4
Subtract 10y on both sides: -2x = -10y - 4Divide -2 on both sides: x = 5y + 2Step 3: Redefine systems
-20y - 7x = -14
x = 5y + 2
Step 4: Solve for y
Substitution
Substitute in x: -20y - 7(5y + 2) = -14Distribute -7: -20y - 35y - 14 = -14Combine like terms: -55y - 14 = -14Add 14 on both sides: -55y = 0Divide -55 on both sides: y = 0Step 5: Solve for x
Define original equation: 10y - 2x = -4Substitute in y: 10(0) - 2x = -4Multiply: 0 - 2x - 4Simplify: -2x = -4Divide -2 on both sides: x = 2Step 6: Graph systems
Check solution set and systems.