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Related Questions
A survey shows that 67% of peanut butter lovers prefer chunky-style. Out of 850 people surveys, how many can be predicted to say they prefer chunky-style peanut butter?
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All you have to do is make you % into a decimal is multiply by 850
Hope this helps :-)
I like to use this formula cause it's really useful when it comes to these problems:
Part Percent
________ = _________
Whole 100
So, you basically plug in the numbers into the equation, it's really easy:
??? 67%
________ = ________
850 100
Then, you cross multiply. 67% x 850 = 56,950 / 100 =
And the answer to your question is: 569.6 or rounded is 570.
A bag is filled with marbles. You take out and mark 80 marbles. Then you put the marbles back in the bag and mix the marbles. In a sample of 20 marbles, 4 of the marbles are marked. About how many marbles are in the bag?
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Who can help me with this algebra 2 work Need help
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Note:
log_a c=b can be written as:
aᵇ=c
hence:
1. log₄ 16=2
will be written in exponential as:
4²=16
2. 25^(1/2)=5
will be written in logarithmic form as:
log₂₅5=1/2
3. Which function represents exponential growth?
#N/B For an exponential function:
y=a(b)^x
when b>1 it exponential growth
when b<1 it is an exponential decay
F: y=1/20(4)ˣ
b=4>1
exponential growth
G: y=16(0.4)ˣ
b=0.4<1
exponential decay
H: 20(1/8)ˣ
b=1/8<1
exponential decay
I. y=8x³
The above function does not have a growth factor, thus
it is a polynomial function not an exponential function.
4. Solve log₄3+log₄x=log₄18
when we add log functions we can multiply them as follows:
log₄(3*x)=log₄18
the log₄ will cancel and we shall remain with:
3x=18
solving for x we get:
(3x)/3=18/3
thus
x=6
5. Solve log₇36x-log₇2=log₇9
Dividing log functions is like subtracting them, thus we shall have:
log₇(36x/2)=log₇9
simplifying this we get:
log₇ 18x=log₇9
log₇ will cancel because of the same base and we shall have:
18x=9
thus
x=9/18
x=1/2
Expand the following:
Remember:
Multiplying logs is the same as adding them
Subtracting logs is the same as dividing them
thus
6. log₃ 4xy
expanding the above give us:
log₃4+log₃x+log₃y
Answer: log₃4+log₃x+log₃y
7. log₅ (xy²)/3
expanding this gives us:
log₅x+log₅y²-log₅3
Answer: log₅x+log₅y²-log₅3
Condense the following logarithms:
Using the concept from 6 and 7 we shall have:
8. log₈2+log₈7-log₈x
condensing this will give us:
log₈[(2*7)/x]
simplifying gives us:
log₈(14/x)
9. log₇9+3log₇y-4log₇2
Condensing the above gives us:
log₇9+3log₇y-4log₇2
=log₇9+log₇y³-4log₇2
=log₇(9*y³)/2
=log₇(9y³/2)
Cheryl used 40% of her money to buy a dress and 1/5 of the remainder to buy a pair of shoes. She then donated $60 to charity and had $132 left How much money did Cheryl have at first?
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Amount used for dress= 40% of a
amount left =60% of a
amount used for shoe= 1/5*60a/100=3a/25
left=60a/100-12a/100=48a/100
=>48a/100-60=132
=>a=192*100/49=400
She had $400 at first.
Hope I helped, good luck.
Dress = 40% x = 0.4x
Amount left = x - 0.4x = 0.6x
Shoes = 1/5 x 0.6x = 0.12x
Amount left = 0.6x - 0.12x = 0.48x
Donated $60 and had $132 left:
⇒ 0.48x - 60 = 132
Solve x:
0.48x - 60 = 132
0.48x = 192
x = $400
Answer: $400
Which of the following is the correct way to write 6 * 6 * 6 as a base and exponent?
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[tex] 6^{3} [/tex] .
6 to the 3rd power, or 6 cubed, would equal :
6 x 6 x 6 = 216.
Hope this helps.
Which expression repressents “6 more than x”?
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Hope this helps I would appreciate brainliest
Short answer: C. x + 6
Why?
When you're referring to addition, you can use words like 'more than, higher than, added, etc.' In this case, we have 6 more than x, so the correct answer would be the one that shows addition, which is x + 6.
Hope this helped you! ♥
Find f(x) if it is known that f(3k)=3k+7.
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Since f(3k) = 3k+7 (Equation 1)
We have to determine the value of f(x).
That is we have to replace 3k by x,
3k = x
Substituting the value of 3k in equation 1.
So, f(x) = x + 7
Therefore, f(x)=x+7 is the required function.
Please help me!
Which of the following is the best definition of the sample space of a probability event?
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Answer: D. The set of all possible outcomes
Step-by-step explanation:
The set of all possible outcomes is the collection of all possible outcomes of an experiment.In the theory of probability the sample space of an random experiment is the set of all possible results of that particular experiment.Therefore, the best definition of the sample space of a probability event is the set of all possible outcomes.
370x1/10 = please help
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It is thirty seven, use a calculator
This is because 370 times 1/10 is the same as 370 times 0.1 which would be equal to 37
if i started a business making braclets for $2 and necklaces for $3 with a budget >200 what would be the inequality equation?
How would I graph
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How would I graph
Solution:
let x= number of bracelets
y= number of necklaces
Thus, the equation would be:
$2x+$3y>200
In graphing this equation, you just have to substitute any number for the values of x and y as long as when substituted, their sum is greater than 200
A rectangle has vertices at these coordinates. (5, −3), (5, −8),(8, −3) What are the coordinates of the fourth vertex of the rectangle? Enter the coordinates in the boxes.
will give brainlest
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Answer:
Coordinate of 4th vertex of the rectangle is ( 8 , -8 ).
Step-by-step explanation:
Given Vertices of Rectangle are ( 5 , -3 ) , ( 5 , -8 ) , ( 8 , -3 )
To find: Coordinate of Fourth Vertex of the rectangle.
First, Plot all given three points on the graph.
Graph is attached.
We know that Opposite sides of the rectangle are equal and parallel.
Also All angles of rectangles are right angle.
So to satisfy these properties of rectangle.
4th coordinate must be on line x = 8 and y = -8.
⇒ Fourth coordinate = ( 8 , -8 )
Therefore, Coordinate of 4th vertex of the rectangle is ( 8 , -8 ).
what does x equal
5x+2y=3
1x+2y=6
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A researcher randomly surveyed a sample of high school students in a town to find out which career area they were most interested in pursuing. This table shows the results of the sample. The town has a total of 1000 high school students.
Art Science Finance Health Law Education
26 24 16 21 18 20
Based on this sample, how many high school students in the school are predicted to be most interested in pursuing a career in health?
Enter your answer in the box.
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26 + 24 + 16 + 21 + 18 + 20 = 125 total
21 picked health so 21 / 125 = 0.168 of the students picked health
multiply that by total students:
1000 * 0.168 = 168 total students will pick health
The total number of students who will pick health is 168 if a researcher randomly surveyed a sample of high school students in a town.
What is a survey?A survey is a means of gathering information from a sample of people using pertinent questions with the goal of understanding populations as a whole.
We have:
A researcher randomly surveyed a sample of high school students in a town to find out which career area they were most interested in pursuing.
The town has a total of 1000 high school students.
Total of students sampled = 26 + 24 + 16 + 21 + 18 + 20
= 125 total
21 picked health:
= 21 / 125
= 0.168 of the students picked health
Total students will pick health:
= 1000×0.168
= 168
Thus, the total number of students will pick health is 168 if a researcher randomly surveyed a sample of high school students in a town.
Learn more about the survey here:
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An electrolyte solution has an average current density of 1 ampere per square decimeter (A/dm^2). What is the current density of the solution in A/m^2?
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1 m = 10 dm
∴ 1 m² = 100 dm² ⇒⇒⇒ 1 dm² = 0.01 m²
For the given dimension
1 (A/dm²) = [tex] 1 \frac{A}{dm^2} = 1 \frac{A}{0.01 \ m^2} = 1 * \frac{1}{0.01 } \frac{A}{m^2} = 100 \ \frac{A}{m^2}[/tex]
note: 1/0.01 = 100
the density of electrolyte solution is 100 ampere per square meter
Step-by-step explanation:We know that the Average current density of the solution = 1 ampere per square decimeter and we need to find the average current density of the solution in ampere per square meter. So
Sudhanshu is solving a system representing a race between two remote control cars. The variable x is defined as time in seconds, and y is the distance in meters from the starting line. How many solutions should Sudhanshu find?
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However, if the speeds are changing, then there could be multiple solutions.
Answer:
The lines would only cross ONCE. So the answer is ONE.
Step-by-step explanation:
If using a graphing calculator you will see that the lines are at different slopes and will soon cross at (5,20) on a graph. Which means that the second cars is also faster even though the first car had a head start.
Which point is an x-intercept of the quadratic function
f(x) = (x + 6)(x – 3)?
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Answer:
(-6,0) and (3,0)
Step-by-step explanation:
we have the function [tex]f(x)=(x+6)(x-3)[/tex] and the x-intecept of the function will be when y=0 then:
[tex]f(x)=(x+6)(x-3)\longrightarrow 0=(x+6)(x-3)[/tex]
Then the result will be 0 when x=-6 or x=3
simplify this expression 6q/20(q+r)
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6q / 20 (q + r)
Rewriting the expression we have:
(6/20) (q / (q + r))
Simplifying we have:
(3/10) (q / (q + r))
Answer:
The simplified expression is given by:
(3/10) (q / (q + r))
Equation:
6q / 20 (q + r)
=(6/20) (q / (q + r))
Simplify it :
(3/10) (q / (q + r))
The simplified expression is given by:
(3/10) (q / (q + r))
The equation below shows The area of a trapezoid, a, with a height of 9 cm, and one base 35 cm. A=9/2(b+35)
Which formula correctly solves for the other base, b?
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A = 9/2 (b + 35)
We must clear b from the equation, to obtain the value of the other base.
Clearing b we have:
(b + 35) = (2/9) A
b = (2/9) A - 35
Answer:
A formula that correctly solves for the other base, b is:
b = (2/9) A - 35
Find the future value of $1800 deposited at 8% for 5 years if the account pays simple interest, and the account pays interest compounded annually.
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0.08(1800) + 1800
But because it is 5 years:
5(0.08(1800)) + 1800
0.4(1800) + 1800
We can make it simpler:
1.4(1800)
Multiply:
2520
YOU NOW HAVE $2520
Answer:
The answer is 2,644.79.
You would have to calculate the three variables to get and complete your answer.
Step-by-step explanation:
Jamie is 5 years older than Ella. Jamie's age is 11 years less than three times Ella's age. The system below models the relationship between Jamie's age (j) and Ella's age (e):
j = e + 5
j = 3e – 11
Which of the following methods is correct to find Jamie's and Ella's age? (4 points)
Solve j + 5 = 3j – 11 to find the value of j.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.
Solve e + 5 = 3e – 11 to find the value of e.
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The correct method is to use the equation
e + 5 = 3e - 11
on solving, we get e = 8 and j = 13
Other methods are complicated.
What type of triangle is this
1. right isosceles
2. obtuse isosceles
3. equilateral equilangular
4. acute scalene
5. right scalene
6. obtuse scalene
7. acute isoceles
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Find sine cosine and tangent
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SOHCAHTOA (used for reference).
[tex]Sin A = \frac{8}{10} = \frac{4}{5} \\Cos A = \frac{6}{10} = \frac{3}{5} \\Tan A = \frac{8}{6} = \frac{4}{3} \\Sin B = \frac{6}{10} = \frac{3}{5} \\Cos B = \frac{8}{10} = \frac{4}{5} \\Tan B = \frac{6}{8} = \frac{3}{4} \\[/tex]
What is the formula for the perimeter of a rectangle?
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What is the value of x in the solution to this system of linear equations? 4x - 3y = 3
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x-y=2
Multiply the bottom equation by -3
4x-3y=3
-3x+3y=-6
Add the two equations together
The y’s cancel each other out
So your left with:
X=-3
The value of x is -3
Add the two expressions. 4.6x−3 and −5.3x+9 Enter your answer, in simplified form, in the box. PLEASE ANSWER FAST THIS IS A BIG DEAL!!!
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[tex]4.6x - 3 + - 5.3x + 9\\ = (4.6x - 5.3x) + (-3 + 9)\\ = -0.7x + 6[/tex]
-----
Answer: -0.7x + 6
An expression is defined as a set of numbers, variables, and mathematical operations. The addition of the two given expressions (4.6x-3) and (-5.3x+9) is (-0.7x+6).
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The addition of the two given expressions (4.6x-3) and (-5.3x+9) is,
(4.6x-3) + (-5.3x+9)
= 4.6x - 3 - 5.3x + 9
= -0.7x + 6
Hence, The addition of the two given expressions (4.6x-3) and (-5.3x+9) is (-0.7x+6).
Learn more about Expression:
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ANSWER ASAP PLEASE!!!
Johnny wants to know how many students in his school enjoy watching science programs on TV. He poses this question to all 26 students in his science class and finds that 75% of his classmates enjoy watching science programs on TV. He claims that 75% of the school's student population would be expected to enjoy watching science programs on TV. Is Johnny making a valid inference about this population?
A. Yes, it is a valid inference because his classmates make up a random sample of the students in the school
B. Yes, it is a valid inference because he asked all 26 students in his science class
C. No, it is not a valid inference because he asked all 26 students in his science class instead of taking a sample from his math class
D. No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
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Answer:D
Step-by-step explanation:
i got it right onn a test
what does a highter and lower standard deviation tell you!!!!?
what does a higher and lower z-score tell you ?
what does the varience tell you?
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V = s^2
where V = variance and s = standard deviation
So the variance can also be used to determine how grouped or spread out the data values are
------------------------------------------
The z score tells us where this score is located in terms of the group. If the z score is positive, then it is above the mean. If the z score is negative, then it is below the mean. The further the z score is from zero, the further the raw score is from the mean. A score of z = 0 is right at the mean.
charlene is a video game designer and wants to make sure that her game can be played on all types of screens. In order for the games to work on both devices with a standard aspect ratio and those with widescreen aspect ratios, the playable area of the games should an aspect ratio of 3:2. This means that the width is equal to 3/2 times the height. On one type of tablet , the playable area of the game on the screen is 54 square inches. Write and solve a system of equations to determine the dimensions of the playable are.
A) width=6 height=9
B) width=6 height=4
C) width=13.5 height=9
D) width=9 height=6
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Let w represent the width and h represent the height. The first equation we write deals with the area of the screen:
A=wh
Our playable area is 54, so we have
54=wh
Now we write the equation relating the width and the height. The width is 3/2 times the height; this means
w=3/2h
We will use substitution to solve this. Substitute the value for w from the second equation into the first equation:
54=wh
54=(3/2h)h
54=3/2h²
Divide both sides by 3/2:
54 ÷ 3/2 = 3/2h² ÷ 3/2
54/1 ÷ 3/2 = h²
54/1 × 2/3 = h²
108/3 = h²
36 = h²
Take the square root of both sides:
√36 = √h²
6 = h
The height is 6. Substituting this into our first equation,
54=wh
54=w(6)
Divide both sides by 6:
54/6 = w(6)/6
9=w
The width is 9.
How many lawns were mowed?
What is the difference between the greatest amount and least amount of gasoline used to mow lawns?
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11 lawns because there are 11 x’ s
What is the difference between the greatest amount and least amount of gasoline used to mow lawns ?
4/8 of to simplify it’s 1/2
Determine whether quantities vary directly or inversely and find the constant of variation. It takes three identical water pumps 8 hours to fill a pool. How long would it take four of these same pumps to fill the pool, assuming they all pump at the same rate?
PLEASE HELP!!
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24/4 = 6 HOURS