Answer:
$2.08 per battery
Step-by-step explanation:
answer the questions!!!!!!!!
Answer:
hiiiiii
Step-by-step explanation:
1/3 of the people in a club are men.The number of men in the club is n.Write down an exprssion,in terms of n, for the number of people in the club.
Answer: The answer is where the n is the number of people in the club
Step-by-step explanation:
A)Write down an expression, in terms of n, for the number of people in the club.
B) Two of the people in the club are chosen at random. The probability that both these people are men is one tenth. Calculate the number of people in the club.
The table shows the average cost of gasoline in the United States in dollars per gallon for the given years.
Year 1995 1996 2000 2001 2005 2006 2010 2011 2013 2014
Price per gallon ($) 1.13 1.14 1.33 1.49 1.88 2.36 2.77 3.15 3.39 3.40
(a) Write the least squares regression equation that models the data. Let x = time in years since 1995 and let y = price per gallon.
(b) Use the equation to estimate the price per gallon in 2030. Show your work.
From the given table, the year values, and prices, we have the following
equation and values;
(a) The least squares regression equation is; y ≈ 0.1316·x - 261.73
(b) The estimate of the price per gallon in 2030 is approximately $5.418
How can the equation and price be obtained from the table?(a) The coefficients of the least squares regression formula are
presented as follows;
[tex]a = \mathbf{\overline y - b \cdot \overline x}[/tex]
[tex]b = \mathbf{\dfrac{\sum \left(x_i - \bar x\right) \times \left(y_i - \bar y\right) }{\sum \left(x_i - \bar x\right )^2 }}[/tex]
Entering the given values in MS Excel, we have;
[tex]\overline x[/tex] = 2005.1
[tex]\overline y[/tex] = 2.204
[tex]b = \dfrac{56.456 }{428.9} \approx 0.1316[/tex]
a = 2.204 - 0.1316 × 2005.1 ≈ -261.73
The least squares regression equation is therefore;
[tex]\underline{y =0.1316\cdot x - 261.73}[/tex](b) In the year 2030, we have;
The price, y ≈ 0.1316 × 2030 - 261.73 = 5.418
In the year 2030, the price per gallon will be approximately $5.418
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What is the measure of Angle WZY?
5 ori 5 fac 25 și cu 25 egal 14 și cu 14 egal 100 și cu 100 egal 12
A cylinder has a base radius of 10in and a height of 10in. What is its volume in cubic
in, to the nearest tenths place?
Answer:
3141.59
Step-by-step explanation:
V=πr2h=π·102·10≈3141.59265
James won the grand prize on a game show and decided that he would pick the following plan. On day 1 he will
get paid one penny, on day 2 he will get paid 2 pennies and on day 3 he will get paid 4 pennies. Assuming this
trend continues how much will he get paid on the 28th day?
Answer:
$134217728
Step-by-step explanation:
Day 1: $1
Day 2: $2
Day 3: $4
Day 4: $8
Day 5: $16
Day 6: $32
Day 7: $64
Day 8: $128
Day 9: $256
Day 10: $512
Day 11: $1024
Day 12: $2048
Day 13: $4096
Day 14: $8192
Day 15: $16384
Day 16: $32768
Day 17: $65536
Day 18: $131072
Day 19: $262144
Day 20: $524288
Day 21: $1048576
Day 22: $2097152
Day 23: $4194304
Day 24: $8388608
Day 25: $16777216
Day 26: $33554432
Day 27: $67108864
Day 28: $134217728
What is the area of this composite figure
189.25 in2
228.5 in2
150 in2
78.5 in2
Answer:
189.25 in²
Step-by-step explanation:
First, let us find the area of the rectangle.
Area = Length × Width
= 15 in × 10 in
= 150 in²
Then let us find the area of the semicircle.
Area = [tex]\frac{1}{2}[/tex] × π r²
= [tex]\frac{1}{2}[/tex] × 3.14 × 5 × 5
= 0.5 × 3.14 × 25
= 1.57 × 25
= 39.25 in²
Now let us find the total area of the composite figure.
Total area = Area of the rectangle + Area of the semi-circle.
= 150 in² + 39.25 in²
= 189.25 in²
there is a loss of 20% by selling a photocopy machine for rs 60000 at what price will the machine be sold to gain 12% find it
Answer:
Step-by-step explanation:
Loss is 20%
S.P=Rs60000
C.P=S.P*100/100-loss%
=60000*100/80=Rs75000
So he brought is at Rs75000
Now he wants 12% profit
So
S.P=(100+profit%)/100*C.P
=100+12/100*75000
=112/100*75000=Rs 84000
He will have to sell Rs14000 more to gain profit of 12%
Find the slope between the two points given. Then, use the slope and the first point to write the equation of the line in Point-Slope form. State the slope. Point One: (−4,5) Point Two: (0,0)
The slope is -5/4 and the equation of the line in point-slope form is y-5 = -5/4(x+4) + c.
What is slope of a line?The slope or gradient of a line is a number that describes both the direction X and Y and the steepness of the line. It is the ratio of the vertical change to the horizontal change between any two distinct points on a line.
For the given situation,
The points are (x1,y1) is (−4,5) and (x2,y2) is (0,0)
The formula of slope is
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
⇒ [tex]m=\frac{0-5}{0-(-4)}[/tex]
⇒ [tex]m=\frac{-5}{4}[/tex]
The equation of the line in point-slope form is
[tex]y-y1=m(x-x1)[/tex]
⇒ [tex]y-5=\frac{-5}{4} (x-(-4))[/tex]
⇒ [tex]y-5=\frac{-5}{4} (x+4)[/tex]
Hence we can conclude that the slope is -5/4 and the equation of the line in point-slope form is y-5 = -5/4 (x+4).
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Talhah drove 45 miles in 1 hour. At this rate, how many miles will he drive in 4 hours?
Answer:
He will drive 180 miles in 4 hours. ( I think)
Step-by-step explanation:
If he keeps going at his rate which is 45 mph then if you multiply that by 4 then your answer should just be 180 miles.
Answer:
180 miles
Step-by-step explanation:
so he goes 45 miles per hour
since you need to find 4 hours just multiply 45 by 4
45 x 4 = 180
there's your answer
Jan says that 2 is between 0 and 3/4 on a number line. Do you agree? Why or why not?
Answer:
No
Step-by-step explanation:
2 is a positive whole number with a value greater than 1. 3/4 is NOT greater than 1. So 2 is greater than both 0 AND 3/4 and cannot be between the two numbers.
No, Jan is wrong because 2 is not in between 0 and 3/4 on a number line.
What is Number line?
Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.
Given that;
Jan says that 2 is between 0 and 3/4 on a number line.
Here, The numbers on the number line are 0 and 3/4.
⇒ 3 / 4 = 0.75
So, We get;
⇒ 2 > 0
And, 3/4 < 2
Thus, The number 2 is not in between 0 and 3/4 on a number line.
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what is the product of? (2x - 1)(x + 3)
Help.: 'A triangle has the side lengths shown.'
'Write an expression in simplest form that represents the perimeter of the triangle.'
Answer:
[tex]9x + 30[/tex]
Step-by-step explanation:
Perimeter is the sum of all sides so just add the length of all the sides together.
Remember to expand 4(x+3)
Which table most likely relates the height, h(t), in meters, over time, t, in seconds, of a ball dropped from above ground level that hits the ground sometime between 4 and 6 seconds after it is dropped? A 2-column table with 4 rows. The first column is labeled t with entries 0, 2, 4, 6. The second column is labeled h(t) with entries 70, 50. 4, negative 8. 4, negative 106. 4. A 2-column table with 4 rows. The first column is labeled t with entries 0, 2, 4, 6. The second column is labeled h(t) with entries 100, 80. 4, 21. 6, negative 76. 4. A 2-column table with 4 rows. The first column is labeled t with entries 0, 2, 4, 6. The second column is labeled h(t) with entries negative 150, negative 130. 4, negative 71. 6, 26. 4. A 2-column table with 4 rows. The first column is labeled t with entries 0, 2, 4, 6. The second column is labeled h(t) with entries 180, 160. 4, 101. 6, 3. 6.
The table which most likely relates the height h(t), in meters, over time, t, in seconds is: Option D:
t (in seconds) h(t) (in meters) 0 180 2 160.4 4 101.6 6 3.6What are the values the height function can achieve if the object is always above the ground?If the height function is function of time 't', and the object's height is measured from the ground level and object never goes inside ground, then that means height can never be negative. It will always assume non-negative values.
What are equations of motion?There are three equations of motion that can be used when motion of the object is under constant acceleration and on a straight path.
They are listed below as:
[tex]v = u + at\\\\s = ut + \dfrac{1}{2} at^2\\\\v^2 = u^2 + 2as[/tex]
where the symbols have following meanings:
u = initial velocity of the considered objectv = final velocity of the objecta = acceleration of the objects = distance traveled by the object in 't' time.All the tables given except the last table have negative height values. That shows that if those negative valued tables are true, then the ball went inside ground.
Since no such event of ball going inside the ground is specified in the considered situation, thus, only the last table is valid here in terms of sign of height.
The last table is:
t (in seconds) h(t) (in meters)
0 180
2 160.4
4 101.6
6 3.6
Checking the truthfulness of the last table by using law of motion in straight path:
u = initial velocity of ball = 0
a = gravitational acceleration = -g ≈ -9.8 m/s sq.
Now, height of ball at time t = initial height of ball - distance it traveled from starting point in direction of reaching ground.
Thus, h(t) = 180 - |s| (assuming first value is true in the table)
where |s| = non-negative value of s
[tex]s= ut + (1/2)at^2\\s = 0t + (1/2)(-9.8)t^2\\\\|s| = 4.9t^2 \: \rm m/s^2[/tex]
Thus, h(t) = 180 - 5t² m/s sq.
[tex]h(2) = 180 - 4.9(2)^2 = 160.4\\h(4) = 180 - 4.9(4)^2 = 101.6\\h(6) = 180 - 4.9(6)^2 = 3.6\\[/tex]
Thus, the table which most likely relates the height h(t), in meters, over time, t, in seconds is: Option D:
t (in seconds) h(t) (in meters) 0 180 2 160.4 4 101.6 6 3.6Learn more about equations of motion here:
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A 20% apple juice drink is mixed with a 100% apple juice drink. The function f(x)=(2)(1.0)+x(0.2)2+x models the concentration of apple juice in the drink after x gallons of the 20% drink are added to 2 gallons of pure juice. What will be the concentration of apple juice in the drink if 6 gallons of 20% drink are added? Give the answer as a percent but do not include the percent sign (%).
Answer: 40
Step-by-step explanation:
The concentration of pineapple when 2 gallons of pineapple juice are added to 6 gallons of the other juice is; 8.24
What are Functions?The function is a type of relation, or rule, that maps one input to a specific single output.
Given that the functions that model the concentration of apple juice in the drink after x gallons of the 20% drink are added to 2 gallons of pure juice.
f(x)=(2)(1.0)+x(0.2)²+x
If the concentration of apple when 2 gallons of apple juice are added to 6 gallons of the other juice;
f(6) = (2)(1.0)+ 6(0.2)²+ 6
f(6) = 2.0 + 6.24
f(6) = 8.24
Hence the concentration of pineapple when 2 gallons of pineapple juice are added to 6 gallons of the other juice is; 8.24
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11 find the measure of the interior angle.
12 and 15 find the measure of the exterior angle.
0.6x-5=0.1x+7 what is the answer
Answer:
x = 24
Step-by-step explanation:
0.6x=0.1×x+7+5
0.6x=0.1×x+12
0.6x−0.1×x=12
0.5x=12
x=24
Answer:
x=24
Step-by-step explanation:
how many milliliters are equivalent to 7.3 liters
In parallelogram BKMH (angle)K = 6x – 15 and (angle) M = 2x + 19. Find the degree measure of angle B
Answer: 63
Step-by-step explanation:
draw a graph of f(x) =(x-5)^2 by shifting rule
[tex] \tt \tiny \gray{thanks}[/tex]
Triangle A has side lengths 2, 3, and 4. Triangle B has side lengths 4, 5, and 6. Is Triangle A similar to Triangle B ? (will give brainliest)
Answer:
No
Step-by-step explanation:
The temperature of a hot iron rod drops by 8° every hour. If the temperature of the iron rod is 118°, find the temperature after 4 hours.
118 - 4 x 8 = 118 - 32 = 86°
Which best describes the solution set of the compound inequality below?
2 + x ≤ 3x – 6 ≤ 12
a: 4 ≤ x ≤ 9
b: 4 ≤ x ≤ 6
c: –2 ≤ x ≤ 2
d: –2 ≤ x ≤ 3
I can't see it redo it so I can answer
Answer:
I believe the answer is B
What is the greatest six-digit number that can be written using all six digits below?
948285
Answer:
988542
Step-by-step explanation:
Highest numbers first because they hold greater values.
Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
help me with this please
What is the perimeter of a square if its area is 50 cm??
Answer:
28.4 (rounded)
Step-by-step explanation:
7.1 times 7.1 is 50. To calculate area, you need to multiply 2 of the sides. so, that is the side length.
then, you multiply it by 4 for all four sides. that would be 28.4.
Answer:
54 or 30
Step-by-step explanation:
Perimeter is adding all the sides together. Area is multiplying LxW and 50 can be gotten by multiplying 5 by 10, or 25 by 2. So if you went by 5x10, both lengths would be 5 and the widths would be 10 or vice versa. Same goes for if you multiplied 25 by 2.
Does the system of equations below have no solution, 1 solution, or infinite solutions
= 2 − 1
= 2 + 4
Answer:
no solution
Step-by-step explanation:
y = 2x - 1 → (1)
y = 2x + 4 → (2)
substitute y = 2x - 1 into (2)
2x - 1 = 2x + 4 ( add 1 to both sides )
2x = 2x + 5 ( subtract 2x from both sides )
0 = 5 ← not possible
This indicates the system has no solution
A year’s subscription of Salmon Snax costs $172.80. California sales tax is 7.25% and Colorado’s is 2.9%. How much less does a customer in Colorado pay than a customer in California?
Kevin claims that the smallest angle of rotation through the center of a regular 15-gon that carries it onto itself is 156° since 180(15−2)15=156. Decide if Kevin is correct. If Kevin is correct, enter 156 below. If Kevin is incorrect, enter the correct value of the smallest angle of rotation through the center of a regular 15-gon that carries it onto itself.
Answer:
Step-by-step explanation:
The formula for calculating the interior angle of a polygon is expressed as;
sum of internal angle = (n-2)180 where;
n is the number of sides of the polygon in consideration.
Given a 15 sided polygon, n = 15
sum of internal angle = (15-2)180
sum of internal angle = (13)180
sum of internal angle = 2340
Hence kevin is wrong, the correct answer is 2340
Answer my question in the image please :)
Answer:
B
Step-by-step explanation:
I hope this helps! :) If you need an explanation, let me know. Other than that, have a lovely day!! <3
A(2;3) is ok on B and C
B(2 ; 6) is ok on B
C (8 ; 7) is ok on B as well
and
D (8 ; 3) is ok on B
=> B