Answer: d. 29%
Step-by-step explanation:
The mixture of the two concentrations should equal a concentration that is between the concentration percentages of the two solutions.
This is because the lower concentration percentage will pull the higher one down while the higher concentration will pull the lower one up. It will not be possible to get a mixture concentration that is lower than the lower concentrated acid or higher than the higher concentration acid.
Mixture concentration must be between 15% and 25%.
Option D at 29% is therefore not possible.
PLEASE SOMEONE I REALLY NEED HELP THIS IS DUE TODAY!!!!!!!!!!
Carla paints 34 of the fence in 1 hour. Which rates are equivalent to Carla’s rate of painting? SELECT ALL THAT APLLY.
A) 3/10 hour to complete 2/5 of the fence
B) 4/5 hour to complete 3/5 of the fence
C) 2/3 hour to complete 1/2 of the fence
D) 9/4 hour to complete 1/3 of the fence
help me.... this is do in 13 min
Answer:
d
Step-by-step explanation:
if k(x) =5x - 6, what is (k +K)(4)
Answer:
40x−48
Step-by-step explanation:
1. Replace k with 5x - 6.
(5x - 6 + 5x - 6)(4)
2. Combine like terms.
(10x - 12) (4)
3. Multiply.
40x−48
Explain how the Distributive Property can be used to solve the equation.
3(x + 4) = 36.
a. Add 3 to each term inside the parentheses, then use inverse operations to solve.
b. Subtract 3 from each term inside the parentheses, then subtract 12 from both sides.
c. Multiply each term inside the parentheses by 3, then use inverse operations to solve.
d. Divide both terms inside the parentheses by 3, then subtract 12 from both sides.
What interval notation represents the data graphed below?
A. [1, 4]
B. [1, 4)
C. (1, 4)
D. (1, 4]
evaluate.
[tex] - \sqrt{81} [/tex]
.......
Answer:
Step-by-step explanation:
First find factors of 81
3 81
3 27
3 9
3 3
1
81 = 3×3×3×3
81 = 3^4
Taking squareroot
∴ -√81 = -√3^4
= -3^2
= -9
Adam would like to buy a used car, and collected several data to evaluate the best model (such as age, price, weight, etc.) Thanks to a scatterplot, he established that the relation between age and weight is somewhat linear. He calculated that the correlation between age and weight is 0.512. Describe the association.
Answer: There is a strong association between age and weight.
Step-by-step explanation:
The correlation coefficient (r) is used to describe the relationship between two variables.
[tex]-1\leq r\leq1[/tex]
If r lies between -1 to -0.5 or 0.5 to 1, then there is strong association between them.
Here, Variables: Age and weight.
correlation coefficient = 0.512
That means, there is a strong association between age and weight.
Solve for x: -3x + 3 < 6 (2 points)
a
x>-1
..
x <-3
Od
x>-3
Answer:
System of Linear equations. To find the quadratic functions f(x) = ax^2 + bx + c whose graphs contain the points (1,0) and (3,0) we can evaluate f at 1
Step-by-step explanation:
Answer:
Step-by-step explanation:
Here you go mate
Step 1
-3x+3<6 Equation/Question
Step 2
-3x+3<6 Simplify
-3x<3
Step 3
-3x<3 Divide
Answer
x>-1
Hope this helps
11 ÷ 3/4=
what dose it means
Answer:
14.66 or 14.7
Step-by-step explanation:
if we solve the equation we get 14.6666 but since it goes on and on we round and put it on 14.7
Answer:
Step-by-step explanation:
11 ÷ 3/4 = [tex]11 * \frac{4}{3}[/tex]
[tex]=\frac{44}{3}\\\\=14\frac{2}{3}[/tex]
Identify the population and the sample.
a. A survey of 1000 U.S. adults found that 83% think credit cards tempt people to buy things they cannot afford.
b. Thirty-eight nurses working in the San Francisco area were surveyed concerning their opinionsof managed health care.
c. A survey of 39 credit cards found that the average annual percentage rate (APR) is 12.83%.
d. A survey of 1205 physicians found that about 60% had considered leaving the practice ofmedicine because they were discouraged over the state of U.S. health care.
In statistics,
Population = Largest set that contains all the individuals or items related to a particular study.Sample = Subset of population.By using above definitions ,
a. Population = all U.S. adults
Sample = 1000 U.S. adults
b. Population = all nurses working in the San Francisco.
Sample = 38 nurses working in the San Francisco.
c. Population = all credit cards
Sample = 39 credit cards
d. Population = all physicians.
Sample = 1205 physicians
The diagram shows a regular hexagon and a parallelogram.
Answer:
180-112 = 68
120-68=52
Step-by-step explanation:
I think that is 52
Answer:
x=52
Step-by-step explanation:
180-112=68
use the equation :(n-2)x180
(6-2)x180=720
720/6=120
120-68=52
ILL GIVE U BRAINLIST!!
Connor is working two summer jobs, making $8 per hour walking dogs and making $12 per hour landscaping. In a given week, he can work a maximum of 15 total hours and must earn no less than $160. If Connor worked 12 hours walking dogs, determine the maximum number of whole hours landscaping that he can work and still meet his requirements. If there are no possible solutions, submit an empty answer.
Answer:
[tex]\mathrm{No\: solutions}[/tex]
Step-by-step explanation:
Since Connor has worked 12 hours walking dogs, he's earned [tex]12\cdot 8 = \$96[/tex] from walking dogs. He still needs to earn [tex]\$160-\$96=\$64[/tex]. As stated in the problem, he makes $12 an hour landscaping, therefore the minimum number of whole hours he must work to fulfill his requirements is [tex]\lceil{ \frac{64}{12} \rceil = 6\: \mathrm{hours}[/tex]. However, the problem states he can only work a maximum of 15 hours. He would have to work [tex]12+6=18[/tex] to fulfill his requirements and therefore he will not be able to meet his requirements with the restrictions given.
Kimberly went 5 miles after walking for 2 hours. If Kimberly's rate of travel st
the same, how far would Kimberly go if she walked for 8 hours?
Answer:
20 miles
Step-by-step explanation:
5 miles for every 2 hours. There are 4 groups of 2 hour blocks in 8 hours, so we multiply the 5 miles*4 2 hour blocks (5*4). That leaves us with 20 miles is 8 hours.
what is this answer?
Answer:
the answer is h=9
Step-by-step explanation:
the answer is h=9
27/3=9
Will give brainliest, and 32 points. Evaluate the expression for x = 3, y=13 , and z = 5. 12x−3y4x−z Enter your answer in the box. What do I put in the box? Tell me that please.
9514 1404 393
Answer:
5
Step-by-step explanation:
Fill in the given values and do the arithmetic.
[tex]\dfrac{12x-3y}{4x-z}=\dfrac{12\cdot3-3\left(\dfrac{1}{3}\right)}{4\cdot3-5}=\dfrac{36-1}{12-5}=\dfrac{35}{7}=\boxed{5}[/tex]
Answer:
5Step-by-step explanation:
We know that:
Given expression: [tex]\frac{12z - 3y}{4x - z}[/tex]x = 3y = 1/3z = 5Solution:
[tex]\frac{12z - 3y}{4x - z}[/tex]=> [tex]\frac{12z - 3y}{4x - z}[/tex]=> [tex]\frac{12(3) - 3(\frac{1}{3}) }{4(3) - 5}[/tex]=> [tex]\frac{36 - 1 }{12 - 5}[/tex]=> [tex]\frac{35}{7} = 5[/tex]Hence, 5 is the answer.
Find the smallest non-zero whole number n such that 756n is a perfect cube.
Step-by-step explanation:
756 = 2² * 3³ * 7.
For 756n to be a perfect cube, all of its prime factors must have a power that is a multiple of 3.
How to get from 2² to 2³: Multiply by 2.
3³ has already a power that is a multiple of 3.
How to get from 7 to 7³: Multiply by 7².
Hence n = 2 * 7² = 98.
I need your help please
Answer:
9.) A= 23mm².
P= 20mm.
T= PARALLELOGRAM.
Step-by-step explanation:
9.) A=(5+5) × 1/2 × 4.6
= (10) × 1/2 × 4.6
= 5mm× 4.6 mm
= 23mm².
P=(5+5+5+5)
= 20mm.
T= PARALLELOGRAM.
Writing Linear Equations.
help is needed
Answer:
[tex]C=4m+30[/tex]
Answer:
30+4x=c
Step-by-step explanation:
cost of club is the 30$ base price and 4$ every month
30$ to join
plus 4$ times number of months you are in the club
number of months you are in club will be m
cost is c
put this into an equation
30+4x=c
i hope this helps
The price of a shirt is $18.50 but you have a coupon that lowers that price by 20% what is the price of that shirt?
Answer:
$3.70
Step-by-step explanation:
What you would do is 18.50×20%. And to make it easier you would do 18.50×0.20 which equals 3.70.
Answer:
The shirt would be $14.80 after using the coupon!
Step-by-step explanation:
I hope this helps a bit, have a good day! =)
Which angle is congruent to p
Answer: angle q is congruent to angle p
Step-by-step explanation:
congruent means same size shape, ect....
a fruit stand has to decide what to charge for their produce. They decide to charge $5.30 for 1 apple and 1 orange.
Answer:
Each fruit cost $2.65 each
Step-by-step explanation:
530 divided by 2 equals 265
Then move the decimal two places left and you get...
2.65
Brainliest? I'm trying to level up!
</3 PureBeauty
Is 3.5 a rational number
Answer:
Yes
Step-by-step explanation:
3.t can be written as a fraction, which is 7/2, so yes it is a rational number.
Your bill at a restaurant is $28.50. You leave a 16% tip. What is your final bill?
A.$4.56
B.$33.06
C.$23.94
D.$44.50
Answer:
$ 33.06
Step-by-step explanation:
I Hope this helps :))))
estimate the quotient 61 ÷ 8 plz help me someone
Answer:
7.625
Step-by-step explanation:
Pls help extra points and mark brainlist easy reading
Answer: the second one
Step-by-step explanation:
List Factors of 27??? (Pls answer I don't wanna waste points)
Answer:
1, 3, 9, 27
Step-by-step explanation:
Answer:
3*7
3*3*3
3^3
Step-by-step explanation:
.............
Find the volume of a cone with a base diameter of 8 m and a height of 12 m.
Write the exact volume in terms of it, and be sure to include the correct unit in your answer.
Answer:
the formula for the volume of a cone is:
1/3hπr²
1/3×12m×π×8m=100.48m³
tom scored 23 points in a basketball game. He attempted 15 field goals and 6 free throws. If each successful field goal is 2 points and each successful free throw is 1 point, is it possible he successfully made all 6 of his throws?
Answer:
No
Step-by-step explanation:
The number is odd, so if he makes all 6 the number wouldn't make sense, because for every successful field goal he gets is 2points; so mathematically it wouldn't make sense.
Answer:
I don't know sorry
Step-by-step explanation:
In a mathematics class 54, students received an A on the third test, which is 150% of the students who received an A on the second test. How many students received an A on the second test?
10,1 #16
Answer:
Number of students who received A grade on the second test = 36
Step-by-step explanation:
Given that:
Number of students who received A grade on third test = 54
This is 150% of the students who received A on the second test.
Let,
x be the number of students who received A on the second test.
150% of x = 54
[tex]\frac{150}{100}x=54[/tex]
1.5x=54
Dividing both sides by 1.5
[tex]\frac{1.5x}{1.5}=\frac{54}{1.5}\\x=36[/tex]
Hence,
Number of students who received A grade on the second test = 36
What is the constant of proportionality?
Hours
Money
0
$0
1
$9
2
$18
3
$27
4
$36
Answer:the answer is 9 :)
Step-by-step explanation: