Answer:
2.5
Step-by-step explanation:
273/280 = 97.5%
2.5% are defective
If 280 units of that model are tested, and the manufacturer finds 273 headsets without any defects, There is a 2.5% chance of finding a defective headset.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
A manufacturer tests a certain number of the headsets that are produced each day.
If 280 units of that model are tested, and the manufacturer finds 273 headsets without any defects,
The chance of finding a non-defective headset
= 273/280
= 97.5%
The chance of finding a defective headset
= 100% - 97.5%
= 2.5% are defective
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Which ordered pair is a solution of the equation? −7x+3y=2
Answer:
(-2/7,2/3)
Step-by-step explanation:
Let's solve for x.
−7x+3y=2
Step 1: Add -3y to both sides.
−7x+3y+−3y=2+−3y
−7x=−3y+2
Step 2: Divide both sides by -7.
−7x/ −7 = −3y+2/ −7
x= 3/ 7 y+ −2/ 7
Answer:
x= 3/ 7 y+ −2/ 7
Let's solve for y.
−7x+3y=2
Step 1: Add 7x to both sides.
−7x+3y+7x=2+7x
3y=7x+2
Step 2: Divide both sides by 3.
3y/ 3 = 7x+2/ 3
y= 7/ 3 x+ 2/ 3
Answer:
y= 7/ 3 x+ 2/ 3
Please help! I will give points for helpng.
Answer:
Should Be 19 students
Step-by-step explanation:
Please help I am really confused with this
Answer:
Step-by-step explanation:
volume of sphere = 4/3*pie*radius cubed
4/3*pie*27 = 36pie
113cmcubed to the nearest whole number
Answer:
A. 113 cm
Step-by-step explanation:
Formula: [tex]\frac{4}{3}\pi r^{3}[/tex]
So: [tex]\frac{4}{3}\pi 3^{3}= 113.0973355[/tex]
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The surface area of a cylinder with height 2 in. is given by the function f(x) = 2πx2 + 4πx, where x is the radius. If g(x) = 4πx gives the surface area of the side of the cylinder, which combined function gives the total surface area of the two circular bases?
A. f + g
B. g − f
C. f − g
D. f · g
Answer:
C f - g
Step-by-step explanation:
the surface area of a cylinder consists of the two circles (1 at the top, 1 at the bottom) and the surrounding "mantle", the side of the cylinder, that connects the two circles.
there are no other parts.
so, when the function for the whole surface area is
SA(x) = f(x) = 2×pi×x² + 4×pi×x
and the side/ mantle area by itself is
g(x) = 4×pi×x
then when ignoring the side/mantle area part in f(x) the only thing left of the main function f(x) is the surface area of the two circular bases.
therefore, the solution for the function of the surface area of only the two circular bases must be the main function minus the function for the side/mantle area.
=> f - g
Given: I is the midpoint of ME and SL
which prosulate can be used to prove the triangles congruent?
SSS
SAS
AAS
ASA
HL
None
Answer:
SAS
Step-by-step explanation:
Given: I is the midpoint of ME and SL
which prosulate can be used to prove the triangles congruent?
The solution is, SAS prosulate can be used to prove the triangles congruent.
What is triangle?A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane.
here, we have,
given that,
I is the midpoint of ME and SL
so, we get,
MI = IE
and, SI = IL
now, we know that,
the opposite angles are equal to each other.
so, we have,
angle MIS = angle LIE
so, for triangle MSI & LIE
We get,
MI = IE
SI = IL
angle MIS = angle LIE
so, we get,
both the triangles congruent by SAS.
Hence, The solution is, SAS prosulate can be used to prove the triangles congruent.
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y = -x + 10 and y = 2x + 4
Answer:
X=2, y=8
Step-by-step explanation:
Y=-x+10 equation 1
y=2x+4 equation 2
-x+10=2x+4. Substitute y of first equation into 2nd equation
-x-2x+10=4
-3x=4-10
-3x=-6
x=2
solve for y by inserting x value into either equation
y=-x+10
y=-2+10
y=8
check answer
y=2x+4
8=2(2)+4
8=4+4
8=8
If secβ =–2, find csc(
Is this triangle acute, right, or obtuse?
acute
Right
Obtuse
Answer:
that is a right triangle.
Step-by-step explanation:
if you do not know, then the square on the corner means 90 degrees. which is a right angle. acute angle means less than that square, and obtuse means over the square. (less and over 90 degrees)
A stock market analyst observes the following for the price of two stocks that he owns, one of which is increasing at an exponential rate (geometric) and the other is increasing in a linear fashion (arithmetic).
Stock A: Equation: an = 15n + 143, where an is the value of the stock and n is the number of years.
Year Price
1 $158.00
2 $173.00
3 $188.00
4 $203.00
5 $218.00
Stock B: Equation: an = 24(1.1)n − 1, where an is the value of the stock and n is the number of years.
Year Price
1 $24.00
2 $26.40
3 $29.04
4 $31.94
5 $35.14
Assuming these stock values continue to increase in the same manner until retirement, which stock option is worth more in 50 years and how much more is this stock worth per share?
HELPPPPPP 100 POINTS PLEASE
Answer:
Use the formulas and find 5th term of both and compare
Stock A
a₅₀ = 15(50) + 143 = $893Stock B
a₅₀ = 24(1.1)⁴⁹ = $2561.25As we see Stock B share has greater value in 50 years and the difference is:
$2561.25 - $893 = $1668.25Find 50th term on both
#1
15(50)+143893#2
24(1.1)^{50-1}24(1.1)⁴⁹2561.25Difference
2561.25-893$1668.25Marco is reconstructing his expenses for the past two weeks. Here are the records of his expenses:
Transaction
Cost ($)
T-shirt
20
Gas
22
Movie
13
Video game
39
Jeans
34
Hat
15
Books
31
Marco’s bank statement says that he has an ending balance of $81. What is Marco’s starting balance?
Answer:
255 - A
Step-by-step explanation:
81+31+15+34+39+13+22+20=255
PLEASEEEEE HURRRRY SOMBODY ANSWER THESE QUESTIONS FOR MEEEE
which model represents the expression
Answer:
C, there are 4 groups of 5/12 on the numberline. They are jumping 4 times whilst each of those jumps are 5/12.
Which statement accurately describes the economic characteristics of modern
Texas?
A. Texas has one of the strongest and most diverse economies in the country.
B. Texas has a fairly strong economy, but growth has slowed since 2004.
C. Texas has a stable economy, but lacks industrial diversity.
D. Texas has a strong oil industry, but all other sectors have struggled recently.
Answer:
D
Step-by-step explanation:
sorry if incorrect
Answer:
The answer is A. Texas has one of the strongest and most diverse economies in the country.
Step-by-step explanation:
Texas is a densely populated state with numerous successful industries and businesses. It has many different cultures and ways of life. Texas has grown and adapted in order to succeed and not only remain stable and functioning, but also climb the ladder of achievement and keep its position (there). (Modern) Texas has a diverse economy that continues to thrive.
The circumference of a circle is 11pi m (meters)
What is the area, in square meters?
Express your answer in terms of pi.
Answer:
10 square meters
Step-by-step explanation:
Mark bought a loaf of bread. The label says the bread weighs 24 ounces. What is the weight of the bread in pounds?{1 pound = 16 ounces}
A. 1 1/2
B. 2
C. 2 1/2
D. 3
Sophie has 327 inches of wire. She needs 500 inches of wire to complete her project. Which equation will help Sophie figure out how much wire she needs to buy?
A. w – 500 = 327
B. w – 327 = 500
C. 327 + w = 500
D.500 + 327 = w
Answer:
C
Step-by-step explanation:
if you take 327+w=500 you would have to subtract 500-327 then you would get 173
Answer:
The answer would be C.
Step-by-step explanation:
Because 327+ 173 = 500
Why is the average approaching 3.5?
There are no remaining rolls, and the average approaching 3.5 is simply the current average of 3.51.
What is a mean?It is the average value of the set given.
It is calculated as:
Mean = Sum of all the values of the set given / Number of values in the set
We have,
To find the average approaching 3.5, we need to use the concept of the mean or expected value.
The expected value of a random variable is the long-run average value that we would expect to get if we repeat an experiment many times.
In this case, we can consider each roll of a die as an experiment, and the value of the die as the random variable.
Assuming that the die is fair and has six equally likely outcomes, each with a value between 1 and 6, the expected value of the die is:
E(X) = (1 + 2 + 3 + 4 + 5 + 6)/6 = 3.5
Therefore, if we roll the die many times, we would expect the long-run average value to be 3.5.
Now, if we have rolled the die 3200 times and the average so far is 3.51, we can calculate the sum of all the values rolled so far as:
Sum = (Average so far) x (Number of rolls) = 3.51 x 3200 = 11232
To find the average approaching 3.5, we need to calculate the average of the remaining rolls. Let's call the number of remaining rolls "n". Then we have:
Average approaching 3.5 = (Sum of remaining rolls) / n
We know that the total number of rolls is 3200, so the number of remaining rolls is:
n = 3200 - (number of rolls already rolled)
n = 3200 - 3200 = 0
Therefore,
There are no remaining rolls, and the average approaching 3.5 is simply the current average of 3.51.
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Which expressions represent rational numbers? Check all that apply.
Answer:
The answer is 1.2 or 5
Step-by-step explanation:
Answer:
B,D,E
Step-by-step explanation:
I NEED THE ANSWER ASAP!!!
You spin the spinner 80 times. About how many times do you expect it will land on something other than A? Explain your reasoning.
Answer:
60%
Step-by-step explanation:
I hopes this helps.
Help plz!!!!!!!!!!!!!!!!!!!!!!!
Answer:
1/12
Step-by-step explanation:
1/4 - 1/6
= 1/12
Find the Difference: 0.325-0.01
Answer:
= 0.315
Step-by-step explanation:
hope this helps :)
Please Help!!!!!
You will be deeply appreciated
I need this for a test!
Answer:
C. 99
Step-by-step explanation:
The number are all less than 50 and then there is only one number that is greater than 50. The number is 99. Because it is a number that is not close to the average numbers at all, it is the outlier.
If this answer has helped you, please mark as brainliest
Answer:
C. 99
Step-by-step explanation:
an outlier is a number that is dralastically diffrent then the rest
HELP HELP HELPH EPLHEPLHEPLHEPLHEPLEP
Answers:
1a) y=-10/3x+90
1b) 20
1c) -18
2a) 2.8
2b) How much the heights of five basketball players vary from the average height.
----------------------------------------------------------------------------------------------------------------
Explanations:
1a) The trend line is linear, so we just need to find the slope and y-intercept to find an equation for it. Our y-intercept is (0,90), or 90, and our slope is -10/3. Our equation is now y=-10/3x+90.
1b) To find when x=21, we plug 21 into our equation where the x is. Now we do the math.
y=-10/3(21)+90 (plug in)
y=-70+90 (simplify by multiplying -10/3 by 21)
y=20 (simplify by adding -70 to 90)
Therefore, we can predict that when x is 21, y is 20.
1c) To find when y=150, we plug 150 into our equation where the y is. Now we do some more math.
150=-10/3x+90 (plug in)
60=-10/3x (subtract 90 from both sides
-18=x (divide both sides by -10/3)
Therefore, we can predict that when y is 150, x is -18.
----------------------------------------------------------------------------------------------------------------
2a) The mean absolute deviation (or MAD for short) of a data set is calculated as such:
Step 1) Find the mean (average) by finding the sum of the data values, then dividing the sum of the data values by the number of data values. In this case, we have the numbers 65, 58, 64, 61, and 67, which add up to 315. The data set has 5 numbers, so we divide our sum of 315 by 5 to get 63. Therefore, our mean is 63.
Step 2) Find the absolute value of the distance between each data value and the mean. In this case, we find out how far away each data value is from 63, our mean. To do this, we subtract 63 from each number.
65-63=2
58-63=-5
64-63=1
61-63=-2
67-63=4
Some of these values are negative, but we're using absolute value so they all become positive. We now have a new set of values: 2, 5, 1, 2, and 4.
Step 3) Finally, we calculate the mean of our new set of values. In this case, we will add up 2, 5, 1, 2, and 4 to get 14 and divide by 5 to get our MAD of 2.8. Therefore, the MAD (and the answer to problem 2a) is 2.8.
2b) Now we just find out what the MAD means in this context. The MAD always is a measure of variance in a data set. In this context, it's describing how much the heights (in inches) of five people on a basketball team vary from the average height.
Hope this helps!
BJ purchased five candy bars ($.79 each) three sodas ($.169)each and four bags of chips ($.89 each). What percent of the total order was spent on sodas? 
Answer:
12.0%
Step-by-step explanation:
. The land area of Charlotte, NC is approximately 3 x 102 square miles.
There are 6.4 x 102 square acres in a square mile. How many square
acres are in the city of Charlotte?
A 1.92 x 105 square acres
B. 2.13 x 104 square acres
C. 4.7 x 105 square acres
D. 9.4 x 104 square acres
Answer:
Option A
Step-by-step explanation:
Land area of Charlotte, NC = [tex]3\times 10^2[/tex] square miles
Scale to be used,
1 square miles = [tex]6.4\times 10^2[/tex] square acres
By this scale,
[tex]3\times 10^2[/tex] square miles = [tex](6.4\times 10^2)\times(3.2\times 10^2)[/tex] square acres
= [tex](6.4\times 3)\times 10^{2+2}[/tex]
= [tex]19.2\times 10^4[/tex] square acres
= [tex]1.92\times 10^5[/tex] square acres
Therefore, Option A will be the correct option.
A 4-cup bottle of vegetable oil costs $2.88. What is the price per fluid Ounce?
Does any one know this question?!?!?!?
What is the perimeter,in centimeters of triangle QRS?
Answer: 60
Step-by-step explanation:
You have to use Pythagorean Theorem because the other side is not listed of the triangle
Pythagorean Theorem: a² + b² = c²
a² + 20² = 25²
a² + 400 = 625
625-400 = a²
a² = 225
Find the square root of 225 to find the missing length
[tex]\sqrt{225}[/tex] = 15 (this is the missing length for QS
To find the perimeter, add all the sides...
15 + 20 +25 = 60
Noah wrote the expression 10m - 2c to represent the following scenario.
A bakery sells muffins for $2 each and cakes for $10 each. Write an expression that gives the amount of money, in
dollars, the bakery makes from selling m muffins and c cakes.
Explain why Noah's expression is incorrect. Provide the correct expression that represents the scenario.
Answer:
Noah's expression is wrong because he used the wrong coefficients for the variables, and he used a subtraction sign instead of an addition sign.
The correct expression is 2m + 10c
Step-by-step explanation:
Noah is incorrect because he used the wrong coefficients for both of the variables in the expression.
Since muffins are $2 each, and m is the number of muffins, the amount of money made from the muffins is 2m, not 10m.
Similarly, since cakes are $10 each, and c is the number of cakes, the amount of money made from the cakes is 10c, not 2c.
Noah is also incorrect because he used a subtraction sign instead of an addition sign. The amounts made from the muffins and cakes have to be added together.
Putting all of this together, the correct expression is 2m + 10c.