I NEED HELP ASAP PLZZZZZZZZ 20 POINTS AND BRAINLY
A chemistry teacher needs to make a 42% sulphuric acid solution. The acid solutions available are 4 liters of 30% sulphuric acid and 50% sulphuric acid, by volume. How many liters of the 50% sulphuric acid solution must be mixed with the 4 liters in order to make the 42% sulphuric acid solution?
Answer:
4 liters of 30% and 6 liters of 50% acid.
Step-by-step explanation:
Let the volume of 30% acid be x, then the volume of 50% acid will be
(10 - x) liters.
So we have the equation:
0.30x + 0.50(10 - x) = 0.42* 10
0.30x + 5 - 0.50x = 4.2
0.80 = 0.20x
x = 4 liters.
So we need 4 liters of 30% acid and 6 liters of 50% acid.
The valley High Marching Band is selling candy bars for a fundraiser
~ Sierra sold some candy bars .
~ Breanna sold twice as many candy bars as Sierra
~ Together Sierra and Breanna sold no less than 45 candy bars
Choose an inequality to represents this situation .
A. x + 2x 45
D . X + 2x ≥ 45
Answer:
D
Step-by-step explanation:
The inequality to represents this situation is x + 2x ≥ 45.
What is inequality?A relationship between two expressions or values that are not equal to each other is called 'inequality'.
Given that, a band is selling candy bars for a fundraiser, Sierra sold some candy bars, Breanna sold twice as many candy bars as Sierra and together Sierra and Breanna sold no less than 45 candy bars
Let Sierra sold x bars, then, according to question,
x + 2x ≥ 45
Hence, the inequality to represents this situation is x + 2x ≥ 45.
For more references on inequality, click;
https://brainly.com/question/28823603
#SPJ3
please provide answer and explanation as to how you got there!!
Answer:
it should be 1485
Step-by-step explanation:
You have to multiply
Answer:
A = 742.5 in^2
Step-by-step explanation:
A = 1/2 b*h
A = 1/2 (45 * 33)
A = 1/2 * 1485
A = 742.5
when graphing a system of equations with "the same"or "different" in order to make the sentence a true statement ______________.
Can someone answer these questions plz and I don’t need the answers I need how to solve them. Thank you!
Answer:
1. 12/252. 9/25Step-by-step explanation:
These are easy, we can convert the different formats to get that desired answer.
1.The way we write 0.48 as a fraction is by putting the number over 100 (two decimal places means out of one hundred).
So 48/100 = 24/50 = 12/25
Answer 12/25
2.We can do the same thing with percents. Percents are always a number out of 100.
So 36/100 = 18/50 = 9/25
Hopefully this answer helped you :)210=157-w
solve for w
Answer:
-53=w
Step-by-step explanation:
210=157-w
Subtract 157 from both sides
53=-w
-53=w
Find the quotient.
−2 1/2 ÷ 3/4
Anwser ???
Step-by-step explanation:
I will give you Brainliest
The state of Montana is experiencing a warm day after a heavy snowfall. The graph shows the height of the snow, h, in centimeters after t hours.
The initial value represents
Part A:
Part A: What linear function does the graph represent?
h=3t+6
h=3t+18
h=−3t+6
h=−3t+18
Part B:
A. The amount of snow melting each hour
B. The amount of snow remaining after four hours
C. The amount of snow that accumulated the previous night
Answer:
I'm pretty sure it is c but I'm not 100% but hope this helps
Step-by-step explanation:
Answer:
part A i think is h=3t+6
Part b is A
Step-by-step explanation:
can you guys help me for 10 point Which of the following gives the correct domain and range for the relation graphed? i provide a picture of the graph so use it to answer pls
A. Domain: { x > –2 }, Range: { y > 1}
B. Domain: { x –2}, Range: { y 1}
9514 1404 393
Answer:
D. Domain: {x ≤ -2}, Range: {x ≥ 1}
Step-by-step explanation:
The graph extends to the left and above the point (-2, 1), which is included in the graph.
The domain is the horizontal extent. That will be all numbers less than or equal to -2.
The range is the vertical extent. That will be all numbers greater than or equal to 1.
Domain: {x ≤ -2}, Range: {x ≥ 1} . . . . matches choice D
Pls help me out with this pls ;-;
Answer:
Sorry, I only know the answer to B.
Step-by-step explanation:
The answer is 0=0, 2=5, 4=10, 6= 15. Sorry if I am late. But I hope this helps, and Have an amazing day!!
is this right yes or no
Answer:
i am just a little confused but so far its a yes
Step-by-step explanation:
Answer:
yes you are correct :)
Step-by-step explanation:
Good job :D
What are the answer for these I need it ASP its a test its 505 of my grade!!!!!!! PLZ
Answer:
I'll do #2 for ya.
a) 27
b) 9
c) 17.5
Step-by-step explanation:
a) 75% of 36 = 27
b) 36-27=9
c) 14*1.25=17.5
1. At Parker's Pizza Parlor, the total cost of an order of 5 slices of pizza is $12.37. This price includes $1. 12 in
sales tax Let p represent the cost of 1 slice of pizza.
(a) Write an equation to represent this scenario.
(b) Solve the equation for p to determine the cost of 1 slice of pizza. Show your work.
Answer:
help please, i'll give brainliest
i understand the first two sentences about walmart and target, i just need help finding the calculations regarding the rebate. also, if someone could explain how to find rebates in this situation i'd be veryyyyyyy grateful
Answer:
TARGET
Step-by-step explanation:
walmart- 183.2
target= 179.4
best buy- 229
Target has the best deal. Hope this helps!
edit: i forgot bring down the 1 for walmart. therefore walmart total is $183.2. therfore TARGET has the better deal. sorry in advance
eden find this and help me
Answer:
HELP PLS
Step-by-step explanation:
https://brainly.com/question/20139113
The ratio of mice to snakes in the pet shop is 6:2. There are 42 mice at the pet shop. What is the total number of mice and snakes at the pet shop?
a.7
b.14
c.42
d.56
Answer:
b 14 its 42 divided by 3 becouse 6 divided by 3 is 2
Step-by-step explanation:
Can you guys help me i will give brainliest
Answer:
0.0625 or 1/16
Step-by-step explanation:
1/2 to the 4th power = 0.0625 or 1/16
Answer:
9
Step-by-step explanation:
2×4=8+1=9
if you got it correct....remember me nvm you already got it
UMM IAM I RIGHT IF NOT WHATS THE ANSWER GIVING BRAINLIESTT!!!
Select the graph that matches the equation. y= -x
Please help me on this
Answer:
25
Step-by-step explanation:
5x when x = 5
5(5) = 25
Will get brainily sign if you get it correct with explanation!!!!!
Answer:
$4.50 or $4.5
Step-by-step explanation:
well, this is easy
30% equals to 0.30 right.
we can't divide because if we do then the answer would be 50$ and that's way more money than Jill has.
so your wondering. What do we do?
Well, what's 30% of 15?
It's 4.5
4 dollars and 5 cents that U will have with Jill.
help pleaseeeeeeeeee i dont know what else to write i just need 20 characters
Answer:
the answer is...
Step-by-step explanation:
⚠️SIMPLE QUESTION!⚠️ Write two ratios that are equivalent to 2:6.
Answer:
4:12 6:18 :) I hope this is ok (I haven't done ratios in a while lol)
what circular object has a diameter of 1 cm circle
(I will mark as Brainleist)
HELP
Answer:
a 1 cm circle does? i dont understand the question?
Step-by-step explanation:
Answer:
a belly button
Step-by-step explanation:
Help!!! I struggle at these kinds of things, will mark as brainliest if both answers are solved!! Tysm!
Answer:
-56
-0.3
Step-by-step explanation:
Answer:
if they didnt give what x is you just do the numbers but since you cant take 78 from 7 i cant answer that one
Step-by-step explanation:
ANSWER ALL THREE FOR BRIANLIEST AND THANK YOU!
Answer:
a,c,a.b
Step-by-step explanation:
25,755 + 9,583 and then this one 8,258 x 9
Answer:
First one is 35,338
Second one is 74,322
Step-by-step explanation:
Answer:
its ummmmm 0
Step-by-step explanation:
I NEED HELP ASAPPPPPP (please and thank you)
Answer:
$11.65
Step-by-step explanation:
Since each birdhouse 2.6 feet of plywood, and you are making 8 birdhouses, you have to is they are then you multiply 2.6 by 8 and get 20.8 square feet of plywood in total. Because each square ft is $0.56, you do $0.56 by 20.8 square ft you then get 11.648, but you round it to 11.65.
Answer:
I think it would be c
Step-by-step explanation:
I hope this helped pls correct me if im wrong
please help me im not smart
Answer:
i believe the answer will be 23
Use the graphing calculator to graph the function f(x) = StartRoot x EndRoot. Which table of values contains points that lie on the graph of the function?
A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries 1, 0, 1, 16.
A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries 0, 0, 1, 2.
A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries undefined, 0, 1, 2.
A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries undefined, 0, 1, 16.
The function f(x) = √x is not defined for the negative value of x. Then the correct option is C.
What is a function?The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.
The function is given below.
[tex]f(x) = \sqrt{x}[/tex]
For x = -1, then the value of the function f(x) will be
[tex]f(-1) = \sqrt{-1}[/tex]
The function is not defined as a negative value.
For x = 0, then the value of the function f(x) will be
[tex]f(0) = \sqrt{0}=0[/tex]
For x = 1, then the value of the function f(x) will be
[tex]f(1) = \sqrt{1}=1[/tex]
For x = 4, then the value of the function f(x) will be
[tex]f(4) = \sqrt{4}=2[/tex]
A 2-column table has 4 rows.
x f(x)
-1 not defined
0 0
1 1
4 2
More about the function link is given below.
https://brainly.com/question/5245372