A chemist creates a solution that contains the following ingredients and quantities
5 cups of potassium
5 cups of water
10 cups of sodium
10 cups of magnesium
20 cups of Silver Oxide
How much Silver oxide water and potassium would be in 1 cup of the solution
it is 17
Step-by-step explanation:
ur wecom
Answer:
2/5 cups of silver oxide
1/10 cups of water
1/10 cups of potassium
Step-by-step explanation:
5+ 5 + 10 + 10+ 20 = 50
there are 50 total cups
now we must find the number to divide 50 by to get the 1 cup that we need
50 / 50 = 1
Now that we know what to divide by to get the quantities for 1 cup of solution, time to get the quantities
there are 20 cups of Silver oxide
20 / 50 = 2/5 cups
there are 5 cups of water
5 / 50 = 1/10 cups
there are 5 cups of potassium
5 / 50 = 1/10 cups
help me please..........
Answer: (-3; -11)
Step-by-step explanation:
[tex]\left \bigg \{ {\big{y=7x+10} \atop\big {y=-4x-23}} \right.\\\\7x+10=-4x-23\\7x+10-10=-4x-23-10\\7x=-4x-33\\7x+4x=-4x-33+4x\\11x=-33\\11x \div 11=-33 \div 11\\x=-3\\\\y=7x+10\\y=7 \times (-3)+10=-21+10=-11[/tex]
Which statement is correct? i'll give brainliest
A. (2.06 × 10∧-2)(1.88 × 10∧-1) 7.69 × 10∧-2/2.3 × 10∧-5
D. (2.06 × 10∧-2)(1.88 × 10∧-1) = 7.69 × 10∧-2/2.3 × 10∧-5
Answer:
yay free points also it is d lol
Step-by-step explanation:
The triangular sail has an area of 25 square feet. The sail's height is 10 feet. What is the length of the base of the sail? Hint: Remember that the area of 25 square feet is half of the rectangle. Don't forget units (feet) in your answer. I'LL MAKE FIRST GOOD ANSWER BRAINLIEST PLEASE HELP
Answer:
5 feet
Step-by-step explanation:
Last year, 42 new houses were built in a neighborhood. So far this year, 5/7 of them have been sold. How many new houses have been sold this year?
Answer:
30
Step-by-step explanation:
illl explqain if you need it
For the following problem, you must first solve the problem, then write the inequality.
Ms. Stone wants to spend less than $80 on presents for her 2 brothers.
What is the most amount of money she can spend on each of them?
The most she can spend on each of them is 40
Hello everyone I hope your doing well, I'm having trouble with school at the moment. I have loads of assignments and I need to finish them today. I will have more of these so if anyone is willing to help with all of these please send me a email
Answer:
A is 55 ÷2=27.5? because 1 is 5 5 so to get 1/2 you will half the first one
help me with this question please thx!!
Answer:
B
Step-by-step explanation:
the table represents the equation y= 35x
x = number of hours
I WILL CHOOSE BRAINLIEST TO BEST ANSWER!!!! WORTH 100 POINTS!!!!!!
Answer:
its I my sister said
Step-by-step explanation:
On interstate highways, the minimum allowable lane width is 12 feet. Write an inequality to show the possible width of a lane.
I dont know if this is what you need hope it helps
so we get to see the lane/ line
Can someone pls help mee
Answer:
Here is your answer
if 3 candies cost 25 cents how much do 30 candies cost
Answer:
$2.50
Step-by-step explanation:
3=0.25 and 30=x
30 is 10 times more than 3 which makes the cost 10 times more than 0.25 = 2.50.
what does it mean to add a negative number?
Answer:
The exact same as subtracting.
Example
5 + (-2) = 3
Answer:
To add a negative number means to subtract
Step-by-step explanation:
Select the correct points.
Identify the pair of points that can represent an increasing function that has a greater rate of change than that of the function
y=8/5x+3/5
Answer: Slope = 3.200/2.000 = 1.600
Geometric figure: Straight Line
Slope = 3.200/2.000 = 1.600
x-intercept = 3/8 = 0.37500
y-intercept = -3/5 = -0.6000
Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
y-(8/5*x-3/5)=0
STEP
1
:
3
Simplify —
5
Equation at the end of step
1
:
8 3
y - ((— • x) - —) = 0
5 5
STEP
2
:
8
Simplify —
5
Equation at the end of step
2
:
8 3
y - ((— • x) - —) = 0
5 5
STEP
3
:
Adding fractions which have a common denominator :
3.1 Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
8x - (3) 8x - 3
———————— = ——————
5 5
Equation at the end of step
3
:
(8x - 3)
y - ———————— = 0
5
STEP
4
:
Rewriting the whole as an Equivalent Fraction :
4.1 Subtracting a fraction from a whole
Rewrite the whole as a fraction using 5 as the denominator :
y y • 5
y = — = —————
1 5
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
4.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
y • 5 - ((8x-3)) 5y - 8x + 3
———————————————— = ———————————
5 5
Equation at the end of step
4
:
5y - 8x + 3
——————————— = 0
5
STEP
5
:
When a fraction equals zero :
5.1 When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
5y-8x+3
——————— • 5 = 0 • 5
5
Now, on the left hand side, the 5 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
5y-8x+3 = 0
Equation of a Straight Line
5.2 Solve 5y-8x+3 = 0
Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 5y-8x+3 = 0 and calculate its properties
Graph of a Straight Line :
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is -3/5 so this line "cuts" the y axis at y=-0.60000
y-intercept = -3/5 = -0.60000
Calculate the X-Intercept :
When y = 0 the value of x is 3/8 Our line therefore "cuts" the x axis at x= 0.37500
x-intercept = 3/8 = 0.37500
Calculate the Slope :
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -0.600 and for x=2.000, the value of y is 2.600. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 2.600 - (-0.600) = 3.200 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / R
Find the sum.
start fraction 1 over 7 end fraction + two-fifths
A. one-fourth
B. start fraction 3 over 7 end fraction
C. The fraction states 14 over 35.
D. Start Fraction 19 over 35 End Fraction
plz help
It took a boat 4 hours to travel downstream 120 miles. Upstream, the same trip took 6 hours. Find the rate of the current and the speed of the boat in still water.
Answer:
30 miles per hour downstream
20 miles per hour upstream
Step-by-step explanation:
divide 4 by 120 to get the rate downstream
divide 6 by 120 to get the rate upstream
Hope this helps :(
yan and Kaine are two partners in a business. Ryan makes $3 in profits for every $4 Kaine makes. If Kaine makes $60 profit on the first item they sell, how much profit does Ryan make?
PLS HELP
Answer: 45
Step-by-step explanation: because 60/4 = 15 and 15 x 3 = 45, Ryan makes $45
I hope this helps
Which quadrant is the point (-3,5) located?
quadrant I
quadrant II
quadrant III
quadrant IV
Use the rule ƒ(x) = -2x + 3 to complete the statement. When x = 5, ƒ(x) = _____.
A. -13
B. -22
C. -7
D. -28
Answer:
-7
Step-by-step explanation:
To solve this equation, plug your x value in and simplify.
-2x + 3
-2(5) + 3
-10 + 3
-7
This is my last question for now, i have a test later today but i need to finish this question first, please answer rightly!!! :))
Answer:
Step-by-step explanation:
60-7.5
=52.5
Answer:
52.5 inches
Step-by-step explanation:
If someone is taller than someone, then you would subtract the to heights. Which in this case it would be 60-7.5, and then you would answer it with a lable. So the answer is 52.5 inches.
PLEASE HELP !!!!!!!!!! I'LL GIVE BRAINLIST!!!!!!
need help plsssss i will give brainliest and thanks
Answer:
its d
Step-by-step explanation:
i did the work
The school band has 36 members, including 5 clarinets and 3 French horns.
What is the probability that a band member chosen at random will play the french horn?
A. 2/36
B. 1/36
C. 7/36
D. 2/5
E. 2/7
Answer:
A. 2/36
Step-by-step explanation:
A music store bought a CD set at a cost of $20. When the store sold the CD set, the percent markup was 40%. Find the selling price.
Answer:
20 * 1.4 = 28
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
I need helpppp pleaseee :(
Answer:
u can use desmos it will help a lot
Step-by-step explanation:
The Bill of Rights was added to the U.S. Constitution to support the Anti-Federalists’ demand for the protection of what?
A.sales tax limits
B.individual liberties
C.veto powers of the President
D.precedents set by the Supreme Court
A. sales tax limits ??
Stephanie earned 8 points for every book she read over the summer. The equation y = 8x represents Stephanie's points based on the number of books she read.
Use the table and equation to complete the statements and find the number of books Stephanie read.
1. Stephanie earned 72 points. Did she read fewer than 2 books, between 2 and 5 books, between 5 and 6 books, or more than 7 books? Explain how you know.
2. The equation y = 8x gives the points, y, earned by reading x books.
Use this equation to find the number of books Stephanie read to earn 72 points. Show your work.
(here are the tables)(plz answer both and dont be greedy as * and say i d k and get pts!)
Answer: multiply 8 on all x number of books read
Step-by-step explanation:
1 is 8 because 8 × 1 is 8
2 is 16 because 8 × 2 is 16
3 is 24 because 8 × 3 is 24
4 is 32 because 8 × 4 is 32
5 is 40 because 8 × 5 is 40
6 is 48 because 8 × 6 is 48
7 is 56 because 8 × 7 is 56
8 is 64 because 8 × 8 is 64
9 is 72 because 8 × 9 is 72
10 is 80 because 8 × 10 is 80
1. If Stephanie had read fewer than 2 books, she would have earned less than 16 points.
2. Stephanie read 9 books to earn 72 points.
What is an equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
1. To determine the number of books Stephanie read, we can plug in the number of points she earned, which is 72, into the equation y = 8x and solve for x:
72 = 8x
Dividing both sides by 8, we get:
x = 9
So, Stephanie read 9 books to earn 72 points.
If Stephanie had read fewer than 2 books, she would have earned less than 16 points (since 8 points per book multiplied by 2 books is 16 points).
Similarly,
If Stephanie had read between 2 and 5 books, she would have earned between 16 and 40 points.
If Stephanie had read between 5 and 6 books, she would have earned between 40 and 48 points.
If Stephanie had read more than 7 books, she would have earned more than 56 points.
2. The given equation is as follows:
y = 8x
Substitute the value of y = 72 in the equation,
72 = 8x
Dividing both sides by 8, we get:
x = 9
Therefore, Stephanie read 9 books to earn 72 points.
Learn more about the equation here:
brainly.com/question/10413253
#SPJ2
Risky Retzlaff is cutting it close! She has 20 minutes to get to her destination and it is 25 miles away. She drives 3/5 miles in 10 minutes, and 1/6 in 5 minutes. How many miles does she have to drive in her last 5 minutes? really need help
Answer:y =
40 mi
Step-by-step explanation:
y = -.75(85) + 103.75
y = -63.75 + 103.75
y = 40 mi from home after 85 min
78 ÷ 8 is equivalent to 78.00 ÷ 8. We can write zeros in the tenths place and hundredths place without changing the value. Use the algorithm to solve.
Answer:
9.75
Step-by-step explanation:
Chorally count by 2⁄3 starting at 6 PLEASE I ONLY HAVE 48 MINUTES LEFT TO DO THIS PLEASEEEEEEEEEEEEE :(
Answer:
I dont know if you want your answer in Exact form or Mixed Number form so I put both.
Starting Box: [tex]\frac{6}{3}[/tex] or 2
Box 1: [tex]\frac{8}{3}[/tex] or [tex]2\frac{2}{3}[/tex]
Box 2: [tex]\frac{10}{3}[/tex] or [tex]3\frac{1}{3}[/tex]
Box 3: [tex]\frac{12}{3}[/tex] or 4
Box 4: [tex]\frac{14}{3}[/tex] or [tex]4\frac{2}{3}[/tex]
Just keep adding [tex]\frac{2}{3}[/tex] from the last number
like:
[tex]\frac{14}{3} + \frac{2}{3} =[/tex]