Answer: it’s C
6.3% of the remaining contaminants are removed from water samples after each round of filters
Step-by-step explanation:
I got a good feeling
The value of b indicates 14.9% of the contaminants remains in water after each round of filters.
What is exponential regression?
Exponential regression refers to the process of arriving at an equation for the exponential curve that best fits a set of data.
What is the general form of the exponential regression equation?[tex]y =a b^{x}[/tex] is the general form of the exponential regression equation.
Let the exponential regression equation be [tex]y = ab^{x}[/tex].
Taking natural logarithm both the sides of [tex]y = ab^{x}[/tex]
⇒ [tex]ln y = a + x ln b..(i)[/tex]
For the value of a and b substitute the value of y and x from the given table.
substitute, y = 100 and x = 0 in equation (i)
⇒ [tex]ln100= a + 0[/tex]
⇒ a = 4.6
Substitute, y = 15, x = 1 and a = 4.6 in equation (i)
⇒ [tex]ln15 = 4.6 +( 1)lnb[/tex]
⇒[tex]2.7 - 4.6 = lnb[/tex]
⇒[tex]lnb = -1.9[/tex]
⇒ b = [tex]e^{-1.9}[/tex]
⇒ b = 0.149
⇒b = 14.9%
Hence, the value of b indicates 14.9% of the contaminants remains in water after each round of filters.
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-4x+2=-13 solve for x
Answer:
x = 3.75
Step-by-step explanation:
-4x + 2 = -13
-4x = -13 - 2
-4x = -15
x = 3.75
Answer:
-13
Step-by-step explanation:
just think about it
Is the equation conditional, an identity, or a contradiction? y - 11 + 3y = 6y + 4
Answer:
The equation is a conditional.
y = 7.5
Step-by-step explanation:
y - 11 + 3y = 6y + 4
4y - 11 = 6y + 4
4y - 4y - 11 = 6y - 4y + 4
- 11 = 2y + 4
- 11 - 4 = 2y + 4 - 4
2y = - 15
2y ÷ 2 = - 15 ÷ 2
y = - 7.5
What is x times -3 ?
Answer:
-x3
Step-by-step explanation:
its simple x = 1
Answer:
-3x
Step-by-step explanation:
Find the value for the given variables. Give the variables in simplest radical form.
[tex] \huge\boxed{ \boxed{\mathrm{ \underline{Answer}࿐ }}}[/tex]
The given triangle is a right angled triangle,
so let's apply trigonometry here :
[tex] \sin(30) = \dfrac{7}{y} [/tex][tex] \dfrac{1}{2} = \dfrac{7}{y} [/tex][tex]y = 7 \times 2[/tex][tex]y = 14 \: \: units[/tex]Now,
[tex] \cos(30) = \dfrac{x}{y} [/tex][tex] \dfrac{ \sqrt{3} }{2} = \dfrac{x}{14} [/tex][tex]x = \dfrac{14 \sqrt{3} }{2} [/tex][tex]x = 7 \sqrt{3} [/tex][tex]x = 12.12 \: \: units[/tex]_____________________________
[tex]\mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]
PLEASE HELP ME ILL MAKE BRAINLIEST HURRY
The table below shows a proportional relationship between the cost of movie tickets and number of tickets purchased.
What is the constant of proportionality?
A
5.5
B
9.5
C
8.5
D
17
Answer:
D.17
Step-by-step explanation:
The black graph is the graph of y=f(x). Choose the equation for the red graph
Answer:
a. y= f(x-1)
Step-by-step explanation:
___________
A power company calculates a person's monthly bill from the number of
kilowatt-hours (kWh), x, used.
The function b(x) = {
0.15%,
0.10 (20 – 400) + 60,
2 < 400
2 > 400
determines
the bill.
How much is the bill for a person who uses 600 kWh in a month?
O A. $80
B. $90
C. $100
O D. $110
Answer: (a)
Step-by-step explanation:
Given
The function [tex]b(x)[/tex] is given for the bill as per the kilo-watt hours used
for 600 kWh in a month, [tex]b(x)[/tex] is
Substitute 600 for [tex]x[/tex] in [tex]b(x)[/tex]
[tex]\Rightarrow 0.10(600-400)+60\\\Rightarrow 0.10(200)+60\\\Rightarrow 20+60\\\Rightarrow 80[/tex]
Therefore, the bill for a person is [tex]\$80[/tex]
Lincoln is throwing a pizza party. He has 77 pounds of cheese available and he needs
1/2 pound of cheese to make each pizza. How many pizzas can he make? plss help asap (multiply ig)
Answer: 154
Step-by-step explanation: trust
b) 6a and 6b are having a competition to see who can make the most money for Red Crescent. 6a make $2 for every $3 that 6b make. If 6a makes $30 AED profit how much will 6b make?
Answer:
45
Step-by-step explanation:
6a 6b
2 / 3
30 / x
30×3 / 2
90/2
=45
Someone help me asap!! its 7:51 and my brain completely shut off.
(ill give brainliest and 50 points!!)
What is the coefficient of the variable in the expression 4 − 3x − 7 + 6?
A) -7
B) -3
C) 4
D) 6
Answer:
B) -3
Step-by-step explanation:
The coefficient is the numerical value placed before and multiplying the variable (x).
Answer:
-3
Step-by-step explanation:
that's answer
hope it helps
answer choices 72 76 86 65
Please give me a detailed step by step explanation of how to solve y ≥ 5.
♣ explanation ♣
--------------------------------------------------------------------------------------
It may seem crazy that the value of Y > 5 can be anything, but it can be. Y greater than 5 basically means that Y is any number over 5 and has no exact value.
--------------------------------------------------------------------------------------
Remember, Y is a variable!
PLEASE HELP!!
What is x? Show your work.
Answer:
Girl i dont know im so sorry
Step-by-step explanation:
good luck on ur assignment tho xoxo
Please give me answer find the odd option
Answer:
should be the third (81,90)
Step-by-step explanation:
A pizza has a diameter of 24
in. What is the area of the
pizza with the given diameter?
Show your work
Beatrice made 7 2/3 cups of lemonade for her lemonade stand. Later, she made 10 3/5 more cups of lemonade. How many cups of lemonade did she make in total?
A: 17 4/15
B: 17 5/8
C: 18 4/15
D: 5/8
Answer:
C: 18 4/15
Step-by-step explanation:
7 2/3 + 10 3/5
Convert fractions so that they share a common denoninator:
7 10/15 + 10 9/15
17 19/15
18 4/15
Area of square is
a 2(l+b)
b l+b
c l²
d l³
[tex] \huge \huge \huge\square[/tex]
Here All Sides Are Equal So,
Area = side × side= side²
So Assuming Side As 'l'
so, l×l = l²
Option C= l²Hope This Helps You ❤️Find the measure of the missing angle in the triangle below А B 100° 55° C
Find area of the composite figure
Answer:
517 sq. cm
Step-by-step explanation:
Area of the figure = area of triangle + area of semicircle
Area of semi circle = πr²/2
Area of semi circle = 3.14*15²/2
Area of semi circle = 353.25 sq.cm
Area of the triangle = a/2 * base * height
Base = 30cm
Height h² = 39² - 15²
h² = 1521 - 225
h² = 1296
h = 10.90cm
Area of triangle = 1/2 * 10.90 * 30
Area of triangle = 15 * 10.90
Area of triangle = 163.5 sq. cm
Area of figure = 353.25 + 163.5
Area of figure = 516.75 sq. cm
Area of figure = 517 sq. cm
Create your own story problem ill give 100 points
Answer:
Step-by-step explanation:
Question 1 of 10
f(x) = x2. What is g(x)?
9(x)
(1.4)
f(x)
O A 962)-(3
O B. g(x) = (2x)
c. g(x) = 2x²
OD. (X) = (4x)
Answer:
[tex]B)~g(x)=(2x)^{2}[/tex]
Step-by-step explanation:
g(1)=(2(1))²
= 2²
=4
g(x)= (2x)²
-----------------------
hope it helps...
have a great day!!
If the given function is f(x)=x², the value of g(x) will be (2x)².
What is a function?Each value in the domain is connected to exactly one value in the range according to the function, which is described as a specific form of relationship. They have a predetermined range and domain.
It is given that the coordinate values are (1.4).
For the given function,
g(1)=(2(1))²
g(1)= 2²
g(1)=4
Since g(x)= (2x)² satisfies the given coordinate values it will be the obtained result.
Thus the obtained function will be g(x)= (2x)².
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easy algebra question below first correct answer gets brainliest
1) If the perimeter of triangle STU is 125 cm, and segments TW, VW, and VT measure 21 cm, 30 cm, and 24 cm, respectively, what is the length of segment SU?
GIVEN: The perimeter of triangle STU is 125.
The segments TW=21 cm
VW=30 cm
VT=24 cm
TO FIND: The length of the segment SU.
SOLUTION:
As corresponding sides must be same. so we have,
[tex]\frac{TV}{TS}=\frac{TW}{TU}\\\\ \frac{24}{TS}=\frac{21}{TU}\\\frac{TU}{TS}=\frac{7}{8}=k(say)\\[/tex]
Then, TU=7k and TS=8k
[tex]\frac{TV}{TS}=\frac{VW}{SU}\\\\ \frac{24}{TS}=\frac{30}{SU}\\\frac{24}{8k}=\frac{30}{SU}\\SU=10k[/tex]
As the perimeter of triangle STU is 125.
so,
8·k+7·k+10·k=125
⇒25.k=125
⇒k=5
Therefore, SU=10×5=50
Given the system of linear equations:
4x + 6y = 24
2x+y=8.
Which equations (select all) are a result from ADDING and/or SUBTRACTING the TWO
equations together?
6x + 7y = 32
2x + 6y = 16
2x + 5y = 16
63 - 6y = 32
When a child is born, her grandfather decides to put $100 in an account that earns interest. He plans to make no other deposits or withdrawals for 18 years. When the child turns 18 years old, the money in the account will be a birthday gift. The grandfather is choosing between two options:
Option 1: An account that grows by 10.5% each year.
Option 2: An account that grows by $20 each year.
Which option will result in a better 18th birthday gift? Explain your reasoning.
Answer:
option (1) is a better 18th Birthday gift of child by Grandfather.
Step-by-step explanation:
Amount deposited in bank at time of birth by Grandfather is $100.
And there is no other deposits and withdrawals for 18 years.
So,
Principal amount =$100
Time = 18 years
Rate of interest of bank = 10.5%
Option 1:- An account That grows by 10.5% each year
we know that Bank give compound interest on the deposit amount
then Compound interest = C.I=P(1+r) with an exponent of t
C.I= 100(1 + 10.5 over 100)with an exponent of 18
C.I= 100*6.0328
C.I= $603.28
Option 2:- An account that grows by $20 each year
Here,
Amount credited in account for 18 years = $20
So, Total amount after completion of 18 years = 10+18*20
=460
Hope this helped <3
The child turns 18 years old, and the money in the account will be a birthday gift is a better 18th Birthday gift for a child by a Grandfather.
The amount deposited in the bank at the time of birth by Grandfather is $100.
And there is no other deposits and withdrawals for 18 years.
Principal amount =$100
Time = 18 years
Rate of interest of bank = 10.5%
Option 1:- An account That grows by 10.5% each year
We know that Bank give compound interest on the deposit amount
What is the formula for compound interest?Compound interest = C.I=P(1+r) with an exponent of t
C.I= 100(1 + 10.5 over 100)with an exponent of 18
C.I= 100*6.0328
C.I= $603.28
An account that grows by $20 each year
The amount credited in the account for 18 years = $20
The total amount after completion of 18 years = 10+18*20
The total amount after completion of 18 years=460
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Help me pls I’m giving brainlest plsss helpp
can someone pls help
z = 13/9?? i don't really know hope i helped
Answer:
B) z = 1 4/9
Step-by-step explanation:
z - 7/9 = 2/3
z - 7/9 = 6/9
z (- 7/9 + 7/9) = 6/9 + 7/9
z = 13/9
z = 1 4/9
find the value of x round to the nearest tenth. 10 7 x
Answer:
Step-by-step explanation:
10.6= 11 when rounded
Trust me po hehe
Jennifer invested $400 at 6% interest compounded continuously. Write a model m(t) that represents the money in Jennifer's account in t years. A. B. How much money is in Jennifer's account after 5 years? Round to the nearest cent. C. Approximately when will Jennifer have $800 in her account? Round to the nearest tenth of a year.
Answer:
11.5 years
Step-by-step explanation:
Given data
Principal= $400
Rate= 6%
For the compound interest at time t, the expression is given as
A= P(1+r)^t
Substitute
A= 400(1+0.06)^t
A=400(1.06)^t
B. How much money is in Jennifer's account after 5 years
put t= 5
A=400(1.06)^5
A=400*1.338
A=$535.2
C. Approximately when will Jennifer have $800 in her account
A=$800
P=$400
r=6%
t= ln(A/P)/r
t= ln(800/400)/0.06
t= ln(2)/0.06
t= 0.6931/0.06
t=11.551
Hence the time is about 11.5 years
What is the value of r
Answer:The value of R at atm that is at standard atmospheric pressure is R = 8.3144598 J. mol-1. K-1.
Step-by-step explanation:i got this from someone
