Answer:10 liter * 20%= x liter*40% + (10- x) liter*5%
10l * 20%= x liter * 35% + 10 liter*5%
x liter *35 = 10l * 20 - 10l *5= 10l*15
x liter = 10l *15/35= 4.28 L= 4.3L
The volume of 40% solution= 4.3L
The volume of 5% solution= 10L- 4.3L= 5.7L
Step-by-step explanation:
In this question, you want to make 10 liters 20% concentration solution by mixing 5% and 40% concentration. There should be multiple answers to this question. Assuming that the total volume of 5% and 40% solution equal to 10L(no solution wasted), then you can determine the volume of solution needed. The formula should be:
Last week, Russell bought 8 pizzas and 10 cakes for a total of $160.
Today, Russell bought 26 pizzas and 8 cakes for a total of $226.
Assuming neither item has changed in price, what is the cost of a pizza in dollars?
Answer:
$5
Step-by-step explanation:
Create a system of equations where p is the cost of a pizza and c is the cost of a cake
8p + 10c = 160
26p + 8c = 226
Solve by elimination by multiplying the top equation by -4, and the bottom equation by 5
-32p - 40c = -640
130p + 40c = 1130
Add these together:
98p = 490
p = 5
So, the cost of a pizza is $5
PLEASE HELP QUICKLY!!!!!! ILL GIVE BRAINLIEST
Which equation could be solved using this application of the quadratic formula?
Answer:
Step-by-step explanation:
A.) x² + 1 = 2x − 3 Make the equation into ax² + bx + c = 0. Subtract 2x on both sides, and add 3 on both sides to set the equation equal to 0
x² + 1 - 2x + 3 = 2x - 2x - 3 + 3
x² - 2x + 4 = 0
a = 1
b = -2
c = 4 This is not the answer because b = 2 not -2, and c = -4 not 4
B.) x² - 2x − 1 = 3 Subtract 3 on both sides to set the equation = 0
x² - 2x - 4 = 0
a = 1
b = -2
c = -4 This is not the answer because b = 2 not -2
C. x² + 2x - 1 = 3 Subtract 3 on both sides to set the equation = 0
x² + 2x - 4 = 0
a = 1
b = 2
c = -4 This is your answer
D. x² + 2x - 1 = -3 Add 3 on both sides to set the equation = 0
x² + 2x + 2 = 0
a = 1
b = 2
c = 2 This is not the answer because c = -4 not 2
Hope this helps :)
Which of the following is equivalent to the addition problem below?
46.61 + 51.52
A.
(40 + 50) + (6 + 1) + (0.6 + 0.5) + (0.01 + 0.02)
B.
(40 + 50) + (6 + 5) + (0.6 + 0.1) + (0.01 + 0.02)
C.
(40 + 10) + (6 + 5) + (0.6 + 0.5) + (0.01 + 0.02)
D.
(40 + 50) + (6 + 1) + (0.6 + 0.1) + (0.05 + 0.02)
Answer:
A) (40 + 50) + (6 + 1) + (0.6 + 0.5) + (0.01 + 0.02)
Step-by-step explanation:
In this case, you are breaking each term down to it's non-zero digits, and adding them:
46.61 = 40 + 6 + 0.6 + 0.01
51.52 = 50 + 1 + 0.5 + 0.02
Note however, that the answer choices add each individual non-zero terms together:
(40 + 50) + (6 + 1) + (0.6 + 0.5) + (0.01 + 0.02), or A)
A) (40 + 50) + (6 + 1) + (0.6 + 0.5) + (0.01 + 0.02) is your answer.
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Find the percent of change. Round to the nearest tenth of a percent if necessary.
Answer:
What’s the percent Lol
Step-by-step explanation:
4x - 7y = -40
3x - 2y = -4
what’s the slope for this graph ??
Answer:
M = 0
Step-by-step explanation:
Straight line is always slope of 0
Answer:
Step-by-step explanation:
Slope is defined as
m=(y2-y1)/(x2-x1) in this case
m=(5-5)/(5- -5)
m=0/10
m=0
This is a horizontal line, y=5, with a slope of zero.
A tank contains 550 gallons of water. When the valve is opened, the tank drains at a rate of 12 gallons per minute. Which function shows the relationship between the time t the valve is opened and the amount of water in the tank?
Answer:
y= 550-12x
Step-by-step explanation:
Given data
Content of tank= 550 gallons
Rate of drain= 12gallon per minute
let the time it will take to drain all 550 gallons be x minutes
Hence the expression for amount of water in the tank after x minutes will be
y= 550-12x
HELP ASAP WILL MARK BRAINLIEST
Answer:
1.
A- about 43.98
B- about 17.59
C- 32.99
Step-by-step explanation:
Answer:
1) 43.98
2) 17.59
3) 32.99
Step-by-step explanation:
hopefully they’re all right
Will give brainliest to whoever figures this out :(
Step-by-step explanation:
I think it's 8.9932×10⁶
Answer:
8,993,200
Step-by-step explanation:
10^3 is 1000
8993.2 * 1000
=
8,993,200
A pack of 8 batteries costs £4.99.
How much does each battery cost?
Give your answer to the nearest penny.
Answer:
0.62
Step-by-step explanation:
4.99/8=0.62
Kala deposits $7000 into an account that pays simple Interest at a rate of 4% per year How much interest will she be paid in the first 4 years?
plz help simplify 8/10
[tex]\frac{8}{10}[/tex] → [tex]\frac{4}{5}[/tex]
8 and 10 can both be divided by 2. So, 8 ÷ 2 is 4 and 10 ÷ 2 is 5.
Hope this helps :)
Answer:
4/5
Step-by-step explanation:
okay so to simplify, we first need to find the GCF of 8 and 10. The GCF of 8 and 10 would be 2. We now divide both 8 and 10 by 2. That will give us 4/5.
[tex]\frac{8}{10}[/tex]÷[tex]\frac{2}{2}[/tex]=[tex]\frac{4}{5}[/tex]
Which ratios correctly compare bananas to apples, as shown in the picture ( 6 apples in a circle and 1 banana in the center ) check all that apply.... Pls help
Answer:
6:1
Step-by-step explanation:
There are 6 apples t o1 banana
(This is all i can do would have been easier with picture)
LCM of the following 5,8,4
Answer:
40
Step-by-step explanation:
5 x 8 = 40
8 x 5 = 40
4 x 10 = 40
Answer:
40
Step-by-step explanation:
5: 5, 10, 15, 20, 25, 30, 35, 40
8: 8, 16, 24, 32, 40
4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
How do i get my grade up in algebra 1 honors? i am in middle school taking the class early and i dont wanna fail
Answer:
just do the assignments get help when neccesary ask the teacers if they have any extra credit materials
Step-by-step explanation:
change the following to algebraic expressions
nine times a number decreased by 11
Step-by-step explanation:
let the number be X
so,
X^9 - 11
Answer: the answer is -4
Find the find the area and the circumference of the circle round your answer to the nearest hundredth
Answer:
area = 452.39 square units
circumference = 75.40 square units
Step-by-step explanation:
area = [tex]\pi r^{2}[/tex]
r = 12
452.389
circumference = [tex]\pi *d[/tex]
d = 2r
r = 12
d = 24
75.398
Nicole makes $6.25 an hour babysitting. How much money will Nicole earn if she works 12 hours?
Answer:
$75
Step-by-step explanation:
Nicole makes $75 in 12 hours.
I hope this helped, if you have any other questions you may ask me.
hi please help i’ll give brainliest
What's the value of
[tex] \sqrt{3 \times 3} [/tex]
Answer:
3.
Step-by-step explanation:
Square root is the opposite of power. Simplify:
[tex]\sqrt{3 * 3 } = \sqrt{3^2} = 3[/tex]
3 is your answer.
~
Answer:
√{3×3}=√3²=±3 is your answer
I’m confused on this question
Answer:
percent will be
65÷90×100which the answer will be
72.2%Step-by-step explanation:
hope it helps
A greeting card cost four dollars before tax. A customer has a 15% discount. Then the 5% sales tax is added. How much will the customer pay for the card?
Given:
Greeting card cost before tax = $4
Discount = 15%
Sales tax = 5%
To find:
How much will the customer pay for the card?
Solution:
It is given that the cost of the greeting card before tax is $4.
After 15% discount, the cost of the greeting card is:
Cost of card after discount [tex]=4-\dfrac{15}{100}\times {4}[/tex]
[tex]=4-0.6[/tex]
[tex]=3.4[/tex]
The cost of card after 5% sales tax is:
Cost of card after tax [tex]=3.4+\dfrac{5}{100}\times 3.4[/tex]
[tex]=3.4+0.17[/tex]
[tex]=3.57[/tex]
Therefore, the customer will pay $3.57 for the greeting card.
if jaylee's snow cone maker can make 800 cubic inches of ice, how many snow cones can she make with the dimensions show below?
What dimensions shown below?
Can someone help me find the mistake!!!!!
Answer:
She supposedly multiplies 4*4*16*-3y but distributes it correctly as if she put (16*4)+(4*-3y) which equals 64-12y.
The work shown is a mistake, the answer of y=5 isn't.
1.5 times 3 in a decimal
Answer:
4.5
Step-by-step explanation:
7m – 3m – 6 < 6 Solve each inequality and graph the solution.
Answer:
3
Step-by-step explanation:
Step-by-step explanation:
7m - 3m - 6 < 6
4m - 6 - 6 < 0
4m - 12 < 0
4m < 12
m < 12 ÷ 4
m < 3
A quadrilateral must be a parallelogram if two the opposite sides are 1. Congruent only 2. Parallel only 3. Congruent and parallel 4 parallel and the other two sides are congruent
Answer:
what’s the question
Step-by-step explanation:
1. Opposite Sides Theorem Converse: If both pairs of opposite sides of a quadrilateral are congruent, then the figure is a parallelogram. 2. Opposite Angles Theorem Converse: If both pairs of opposite angles of a quadrilateral are congruent, then the figure is a parallelogram.
Solve each equation: -5(7-8x)-7x=-(3x+1)
Answer:
Step-by-step explanation:
Coach Rivas can spend up to $750 on 30 swimsuits for the swim team. The inequality shown can be used to find the maximum amount in dollars she can spend on each swimsuit. 30p≤750 which inequality represents all the possible values of p,the amount of money in dollars coach Rivas can spend on each swimsuit
Answer:
$0 < p ≤ $25
Step-by-step explanation:
We know that coach Rivas can spend up to $750 on 30 swimsuits.
This means that the maximum cost that the coach can afford to pay is $750, then if the cost for the 30 swimsuits is C, we have the inequality:
C ≤ $750
Now, if each swimsuit costs p, then 30 of them costs 30 times p, then the cost of the swimsuits is:
C = 30*p
Then we have the inequality:
30*p ≤ $750.
To find the possible values of p, we just need to isolate p in one side of the inequality.
So we can divide both sides by 30 to get:
(30*p)/30 ≤ $750/30
p ≤ $25
And we also should add the restriction:
$0 < p ≤ $25
Because a swimsuit can not cost 0 dollars or less than that.
Then the inequality that represents the possible values of p is:
$0 < p ≤ $25
[tex]25x |2| - 16 \: \\[/tex]
Answer:
Step-by-step explanation:
a² - b² = (a +b)(a - b)
[tex]5x^{2} - 16 = 5^{2}x^{2} - 4^{2} \\\\= (5x)^{2}-4^{2}\\\\=(5x + 4)(5x - 4)[/tex]