Given :
Initial concentration , 240 ppm .
Final concentration , 360 ppm .
To Find :
Percent increase.
Solution :
Percentage increase is given by :
[tex]=\dfrac{Final-Initial}{Initial}\times 100\\\\=\dfrac{360-240}{240}\times 100\\\\=50\%[/tex]
Therefore , percent increase is 50 % .
Hence , this is the required solution .
Match the following items by evaluating the other expressions for x=-2
HELP!
X0= 1
X-2= 1/4
X-1= -1/2
X1= -2
X2= 4
Solve the equation: (3)/(7)-(2)/(5)x=5
Answer:
x = - [tex]\frac{80}{7}[/tex]
Step-by-step explanation:
Given
[tex]\frac{3}{7}[/tex] - [tex]\frac{2}{5}[/tex] x = 5
Multiply through by 35 ( the lcm of 7 and 5 ) to clear the fractions
15 - 14x = 175 ( subtract 15 from both sides )
- 14x = 160 ( divide both sides by - 14 )
x = [tex]\frac{160}{-14}[/tex] = - [tex]\frac{80}{7}[/tex]
Quick ! What is 7/9 + 1/2 ?
Answer:
23/18
Step-by-step explanation:
Answer:
23/18 or 1 and 5/18
Step-by-step explanation:
7/9+1/2 can't be directly added, so you must find the lowest-common-denominator, which is 18 (multiplying the denominators gets you this number.) You then change the factors to have the common denominator of 18, which would be 14/18 and 9/18. From here, you just simply add those two numbers together.
Solve the following equation. -8(-x-5)=40+8x
Answer:
all the values
Step-by-step explanation:
[tex]-8(-x-5)=40+8x\\\\-x-5=\frac{40}{-8}+ \frac{8x}{-8} \\\\-x-5=-5-x\\\\-x-5=-x-5\\\\-x=-x-5+5\\\\-x=-x+0\\\\-x=-x\\[/tex]
[tex]-1(-x)=-1(-x)\\\\x=x[/tex]
so all the values for x are solutions
Answer:
40=40 so the equation is true
Step-by-step explanation:
-8(-x-5)=40+8x
8x +40 = 40 + 8x
if you cancle out the 8x on both sides then it will be 40 = 40
therefore the equation is true and have infinite soulutions
1. Beverly Hibbs earns $325.00 a week. She is single and claims 2 allowances.
What amount is withheld weekly for federal income tax?
Sing Chi Fong carns $41500 wool
Answer:
FEDERAL INCOME TAX
Employers are required by law to withhold a certain amount of your pay for federal income tax (FIT). The Internal Revenue Service provides employers with tables that show how much money to withhold.
The amount withheld depends on your income, marital status, and withholding allowances. You may claim 1 allowance for yourself and 1 for your spouse if you are married. You may claim additional allowances for any others you support.
Use the tax tables in the chapter 02 folder to help you with these problems.
1. Beverly Hibbs earns $325.00 a week. She is single and claims 2 allowances.
What amount is withheld weekly for federal income tax?18
2. Sing-Chi Fong earns $415.00 a week. He is married and claims 3 allowances.
What amount is withheld weekly for federal income tax?12
3. Rebecca David earns $427.50 per week as manager at Marlin Department Sto
i need help... my brain stopped working
Answer:
Well n=6
Step-by-step explanation:
This is because if 0=m you put that in the spot were m is and then that would be 0/5 which is 0 than you add 6 which 0+6 = well 6. Then you just plug your x's in to the equation (second part) but if you don't have a x you plug the y in instead.
At the farmers marke, two pounds of peaches cost $4.20. How much will five pounds cost
8.
Tubular T-shirts charges $22 to come up with a design. They then charge $12 per tushirt.
How many t-shirts can you buy with $4882
Answer: 143
Step-by-step explanation: So, first, you add the two first amounts, which are $12 and $22, which is 34. Then, you divide the amount you have (4882) by the amount you need (34). And finally, you take away the decimal, and you have your answer!
i need to find the area .
Answer:
104 ft^2
Step-by-step explanation:
area of rectangle = 8 × 10 = 80
area of triangle = 1/2 × 6 × 8 = 24
∴total area = 104 ft^2
Add one term to the polynomial expression 14x^19 - 9x^15 + 11x^4 + 5x^2 + 3 to make it into a 22nd degree polynomial
Given:
The polynomial is
[tex]14x^{19}-9x^{15}+11x^4+5x^2+3[/tex]
To find:
One term which is used to add in given polynomial to make it into a 22nd degree polynomial.
Solution:
Degree of a polynomial is the highest power of the variable.
Let,
[tex]P(x)=14x^{19}-9x^{15}+11x^4+5x^2+3[/tex]
Here, the highest power of x is 19, so degree of polynomial is 19.
To make it into a 22nd degree polynomial, we need to need a term having 22 as power of x.
We can add [tex]kx^{22}[/tex], where k is constant.
So add [tex]x^{22}[/tex] in the given polynomial.
[tex]P(x)=x^22+14x^{19}-9x^{15}+11x^4+5x^2+3[/tex]
Now, the degree of polynomial is 22.
Therefore, the required term is [tex]x^{22}[/tex].
The required polynomial to a 22nd degree is [tex]P(x)=x^{22}+14x^{19} - 9x^{15} + 11x^4 + 5x^2[/tex]
Given the polynomial function, [tex]14x^{19} - 9x^{15} + 11x^4 + 5x^2[/tex],, we are to add one term to the polynomial to make it into a 22nd-degree polynomial.
Note the highest and leading power of the variable of any function is the degree of such function.
To convert the given polynomial to a 22nd-degree function, we will simply add a variable term x with a degree of 22 to have:
[tex]P(x)=x^{22}+14x^{19} - 9x^{15} + 11x^4 + 5x^2[/tex]
Hence the required polynomial to a 22nd degree is [tex]P(x)=x^{22}+14x^{19} - 9x^{15} + 11x^4 + 5x^2[/tex]
Learn more here: https://brainly.com/question/2706981
Ashley spent half of her weekly allowance at the movies. To earn extra money, Ashley’s parents let her clean the house windows for $8. What is Ashley’s weekly allowance if she endedupwith$14?
Answer:
$12
Step-by-step explanation:
First you make an equation-
Since she spent half of her allowance at the movies it should start with x/2. Then you add the extra money she made. This should equal $14.
Equation: x/2 + 8 = 14
Solve
x/2 + 8 = 14
Subtract 8 from both sides
x/2 = 6
Multiply each side by 2.
x= 12
Simplify this expression:
6 + 2(7x - 3)
A. 14x + 3
B. 12 + 7x
C. 14x
D. 9 + 7x
Answer:
C
Step-by-step explanation:
6+14x-6
14x as they cancel
Answer:
6+2(7x-3)
6+14x-6
14x
Chris can eat 10 hotdogs and Kelvin can only eat 5. How would you describe how much Chris eats compared to Kelvin? How about Kelvin compared to Chris?
Answer::Chris it’s double the amount of hotdogs as Kelvin
Kelvin is half as many hotdogs is Chris
Chris eats 2x
Kevin eats x
Find the Simple Interest on a loan of ₦60,000 at the rate of 3% for 3½ years.
Answer:
6300
Step-by-step explanation:
T = 3 1/2 = 7/2
R = 3% = 3/100
P = 60,000
I = PRT
I =60,000×3/100×7/2
I =6300
List all of the factors of the number 48 in order least to gradest
Answer:
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48. Prime factorization: 48 = 2 x 2 x 2 x 2 x 3, which can also be written 48 = 2⁴ x 3.
Hoped I helped
50+(2x +30)+ (2x +20) + X=360
how do I solve this problem?
Answer:
x = 52
Step-by-step explanation:
50+(2x +30)+ (2x +20) + X=360
Combine like terms
5x+100 =360
Subtract 100 from each side
5x+100-100 = 360 -100
5x = 260
Divide by 5
5x/5 = 260/5
x = 52
Answer:
x=52
Step-by-step explanation:
50+(2x +30)+ (2x +20) + X=360
First combine like terms
50+30+20=100
2x+2x+x=5x
combine
5x+100=360
subtract 100
5x=260
divide by GCF (5)
x=52
Hope this helps! Plz award Brainliest : )
find the area of (1, 13) (7, 13) (7, 1) (1, 1)
Answer:
36 units squared
Step-by-step explanation:
Let's say that (1, 13) is point A, (7, 13) is B, (7, 1) is C, and (1, 1) is D. The distance from point A to point B is 6 units horizontally, which we now know is the base. The distance from point C to point D is 6 units vertically, so this must be the height of the shape. To find the area we multiply the base times the height (6 * 6). We get 36, so the area of this shape is 36 units squared.
which number below is not an irrational number 46, 47, 48 ,49
Answer:
Undeterminable, as no answer choices are given.
Step-by-step explanation:
No answer choices have been given. However, you can always find this out. Rational numbers are always a fraction or repeating decimal. For example, 1/3 is rational, 2.3838383838 is rational, but 3.1415926535879 is irrational.
7-3x+2? whts the answer
Answer:7-3x+2
9-3x
Step-by-step explanation:
Enter the possible range of the measurement. Round to the nearest hundredth if necessary. 15 lb + 2%
Answer:
17%
Step-by-step explanation:
How many letters are needed to name a plane ?
3,-10, -2, 13, 11 The mean is
Answer:
The Mean is 3
Step-by-step explanation:
For future reference, here's how to solve the mean.
1.Add up all data values to get the sum
2.Count the number of values in your data set and divide the sum by that number.
In this problem, there are 5 values, and all the values added together equals 15. Divide 15 by 5 and you get 3. The mean is 3.
Which transformation results in a figure similar but not congruent to its image?
a. Reflection
b. Translation
c. Dilation
d. Rotation
Answer:
the correct answer is dilation and rotation
Step-by-step explanation:
Dilation is when the figure becomes smaller to form its image. The image will be similar to the figure, but since it becomes smaller it is not congruent.
abcd is a rhombus. if AC is =8cm and BD =12cm find the area and perimeter of the rhombus
Answer:
AC= 8cm....(d1)
BD=12cm....(D2)
Step-by-step explanation:
BD=12cm....(D2)
Area of rhombus when diagonals are given=>
So According to the formula =>
Perimeter of rhombus formula when diagonals are given =
=> d1×d2
=> 8×12=96cm²
The Hernandez family orders 3 large pizzas. They cut the pizzas so that each pizza has the same number of slices, giving them a total of 24 slices. The Wilson family also orders several large pizzas from the same pizza restaurant. They also cut the pizzas so that all their pizzas have the same number of slices. For the Wilson family, the equation y = 10x represents the relationship, where x represents the number of pizzas and y represents the number of total slices. Which statements best describe the pizzas bought by the Hernandez and Wilson families?
Answer:
cStep-by-step explanation:
i did it
Answer:
C B E
Step-by-step explanation:
What is another way to express five to the second power?
Answer: Squared because it equals to the 5 squared
Step-by-step explanation: Its because 5 to the second power is the same as 5 squared Hope this helped :)
Answer:
five squared
Step-by-step explanation:
PLEASE HELP 15 POINTS
-8 - h = 2(-.5h + 4)
Answer:
h= -6
Step-by-step explanation:
-8-h=2(-.5h+4)
-8-h=h+4
-2h=12
h=-6
(5 - i)(5 + I)=
Answer choices:
26
25i
24
Answer:
26
Step-by-step explanation:
We can use difference of squares:
(5 - i)(5 + i) = 5^2 - i^2
i^2 = -1, so we have 25 - (-1) = 25 + 1 = 26
Answer:
26
Step-by-step explanation:
hazal is paid $48 for 6hours work. how much is she paid for 4hours work?
Answer:
she get paid for 192 dollars for 4 hours
At a school carnival 8 out of 20 tickets sold were early admission tickets. What percentage of the tickets were early admission tickets?
Answer:
40% were early admission tickets
Step-by-step explanation:
1.[tex]\frac{8}{20}[/tex]= 0.40 = 40%
