Answer:
6.989582×10^-6
Step-by-step explanation:
6,000,000+900,000+80,000+9,000+500+80+2
=6989582
=6.989582×10^-6
Find the slope of the line
Solve the inequality: 14-0.6t>2
Answer:
t > 20
Step-by-step explanation:
14 - 0.6t > 2
14 - 14 - 0.6t > 2 - 14
- 0.6t > - 12
- 0.6t ÷ - 0.6 > - 12 ÷ - 0.6
t > 20
Answer:
t<20
Step-by-step explanation:
move the constant to the right- hand side and change its sign
-0.6>2-14
calculate the differnce
-0.6> -12
divide both sides of the inequality by -.06 and flip the inequality sign
t>20
so your solution is t>2o
The table shows the soil density of several soil samples at different depths. A) Write the quadratic regression equation that models the data. Let x = depth below the surface and let y = soil density. (B) Use the equation to estimate the soil density of a sample at a depth of 20 m. Show your work. ( Look at the picture for the table and Answer Part A and Answer Part B) Will Mark Brainliest if correct.
Answer:
depends on the tax percentage
Step-by-step explanation:
Hope this answer helps you.
Have a great day
Mark brainliest
I need help
Cristina and Kori both leave the restaurant at the same time, but in opposite directions. If Kori travels 9 mph faster than Cristina and after 6 hours they are 186 miles apart, how fast is each traveling?
Carrie left the restaurant traveling 12 mph. Then, 4 hours later, Leah left traveling the same direction at 24 mph. How long until Leah catches up with Carrie?
Paige started biking to the mall traveling 8 mph, after some time the bike got a flat so Paige walked the rest of the way, traveling 5 mph. If the total trip to the mall took 8 hours and it was 46 miles away, how long did Paige travel at each speed?
Answer:
Question 1)
Cristina is traveling 11 miles per hour and Kori is traveling 20 miles per hour.
Question 2)
Four hours.
Question 3)
Paige spent two hours biking and six hours walking.
Step-by-step explanation:
Question 1)
Let Cristina's speed be x.
Kori travels 9 miles per hour faster than Cristina. So, Kori's speed is (x + 9).
After six hours, Cristina would have traveled 6x miles and Kori would have traveled 6(x + 9) miles.
Since Kori traveled in the opposite direction, we can place a negative to represent this. So, after six hours, Kori is -6(x + 9) miles away from the restaurant while Cristina is 6x miles away from the restaurant.
Since the distance between them is 186 miles, the difference of the two expressions is 186. Hence:
[tex](6x)-(-6(x+9))=186[/tex]
Distribute:
[tex]6x-(-6x-54)=186[/tex]
Distribute:
[tex]6x+6x+54=186[/tex]
Simplify:
[tex]12x=132[/tex]
Hence:
[tex]x=11[/tex]
Cristina's speed is 11 miles per hour. Thus, Kori's speed is 20 miles per hour.
Question 2)
Let h represent the amount of time that has passed in hours.
Carrie left the restaurant traveling 12 miles per hour.
Four hours later, Leah left traveling in the same direction at 24 miles per hour.
After four hours, Carrie would have traveled 12(4) = 48 miles.
Carrie would still be traveling at 12 miles per hour. So, her distance from the restaurant is given by:
[tex]12h+48[/tex]
Since Leah just left and is traveling at a rate of 24 miles per hour, her distance from the restaurant is given by:
[tex]24h[/tex]
Leah will catch up when the two expressions are equivalent. Hence:
[tex]12h+48=24h[/tex]
Solve for h:
[tex]12h=48\Rightarrow h=4[/tex]
Leah will catch up with Carrie in four hours.
Question 3)
Let x represent the amount of hours spent biking and y represent the amount of hours spent walking.
The total trip to the mall took eight hours. Hence:
[tex]x+y=8[/tex]
The mall is a total of 46 miles away. Since Paige bikes at a rate of 8 miles per hour and walks at a rate of five miles per hour:
[tex]8x+5y=46[/tex]
Solve the system. We can use elimination. Multiply the first equation by -5:
[tex]-5x-5y=-40[/tex]
We can add this to the second equation:
[tex]3x=6[/tex]
Hence:
[tex]x=2[/tex]
Using the first equation again:
[tex](2)+y=8\Rightarrow y=6[/tex]
So, Paige spent two hours biking and six hours walking.
PLS HELPPP ASAP!!!!!
Below are the data collected from two random samples of 500 American adults on the number of hours they work per day (rounded to the nearest hour):
Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65
Ryan concludes that adults spend a mean of 8 hours working each day. Malia thinks the mean is 9 hours. Who is correct—Ryan or Malia? Explain your answer in two or three sentences. Make sure to use facts to support your answer.
Answer:
RYAN
Step-by-step explanation:
6+7+8+9+10=40
40 divided by 5= 8
mean is all numbers added together divided by amount of numbers
The average number of hours that adults spend working each day is; 8 hours and Ryan is correct because he got the average of 8 right.
How to calculate the mean from a sample of data?The mean is gotten from the formula;
x' = ∑x/n
Number of hours of work per day are; 6, 7, 8, 9 and 10
Thus;∑x = 6 + 7 + 8 + 9 + 10
∑x = 40
Mean is; x' = 40/5
x' = 8
Since ryan concluded that the average is 8 hours, then we can say that Ryan is correct.
Read more about mean of data at; https://brainly.com/question/24245867
he owner of a local supermarket wants to estimate the difference between the average number of gallons of milk sold per day on weekdays and weekends. The owner samples 5 weekdays and finds an average of 259.23 gallons of milk sold on those days with a standard deviation of 34.713. 10 (total) Saturdays and Sundays are sampled and the average number of gallons sold is 365.12 with a standard deviation of 48.297. Construct a 90% confidence interval to estimate the difference of (average number of gallons sold on weekdays - average number of gallons sold on weekends). Assume the population standard deviations are the same for both weekdays and weekends.
Answer:
90% confidence interval is ( -149.114, -62.666 )
Step-by-step explanation:
Given the data in the question;
Sample 1 Sample 2
x"₁ = 259.23 x"₂ = 365.12
s₁ = 34.713 s₂ = 48.297
n₁ = 5 n₂ = 10
With 90% confidence interval for μ₁ - μ₂ { using equal variance assumption }
significance level ∝ = 1 - 90% = 1 - 0.90 = 0.1
Since we are to assume that variance are equal and they are know, we will use pooled variance;
Degree of freedom DF = n₁ + n₂ - 2 = 5 + 10 - 2 = 13
Now, pooled estimate of variance will be;
[tex]S_p^2[/tex] = [ ( n₁ - 1 )s₁² + ( n₂ - 1)s₂² ] / [ ( n₁ - 1 ) + ( n₂ - 1 ) ]
we substitute
[tex]S_p^2[/tex] = [ ( 5 - 1 )(34.713)² + ( 10 - 1)(48.297)² ] / [ ( 5 - 1 ) + ( 10 - 1 ) ]
[tex]S_p^2[/tex] = [ ( 4 × 1204.9923) + ( 9 × 2332.6 ) ] / [ 4 + 9 ]
[tex]S_p^2[/tex] = [ 4819.9692 + 20993.4 ] / [ 13 ]
[tex]S_p^2[/tex] = 25813.3692 / 13
[tex]S_p^2[/tex] = 1985.64378
Now the Standard Error will be;
[tex]S_{x1-x2[/tex] = √[ ( [tex]S_p^2[/tex] / n₁ ) + ( [tex]S_p^2[/tex] / n₂ ) ]
we substitute
[tex]S_{x1-x2[/tex] = √[ ( 1985.64378 / 5 ) + ( 1985.64378 / 10 ) ]
[tex]S_{x1-x2[/tex] = √[ 397.128756 + 198.564378 ]
[tex]S_{x1-x2[/tex] = √595.693134
[tex]S_{x1-x2[/tex] = 24.4068
Critical Value = [tex]t_{\frac{\alpha }{2}, df[/tex] = [tex]t_{0.05, df=13[/tex] = 1.771 { t-table }
So,
Margin of Error E = [tex]t_{\frac{\alpha }{2}, df[/tex] × [ ( [tex]S_p^2[/tex] / n₁ ) + ( [tex]S_p^2[/tex] / n₂ ) ]
we substitute
Margin of Error E = 1.771 × 24.4068
Margin of Error E = 43.224
Point Estimate = x₁ - x₂ = 259.23 - 365.12 = -105.89
So, Limits of 90% CI will be; x₁ - x₂ ± E
Lower Limit = x₁ - x₂ - E = -105.89 - 43.224 = -149.114
Upper Limit = x₁ - x₂ - E = -105.89 + 43.224 = -62.666
Therefore, 90% confidence interval is ( -149.114, -62.666 )
Gregory knows that ABC is reflected onto A'B'C. Which statement about the figures is true? Olf Gregory draws the segment with endpoints A and A', then the midpoint will lie on the line of reflection O If Gregory draws the segment with endpoints B and C', then the midpoint will be on the line of reflection O Points A and B are equidistant from the line of reflection O AB will be perpendicular to the line of reflection
The true statement about the reflection is (a) If Gregory draws the segment with endpoints A and A’, then the midpoint will lie on the line of reflection.
When a shape is reflected, it must be reflected across a line (called the line of reflection)
The line of reflection is always located at a point equidistant to the image and the pre-image of the shape that is being reflected
Hence, the true statement is (a) If Gregory draws the segment with endpoints A and A’, then the midpoint will lie on the line of reflection.
Read more about reflection at:
https://brainly.com/question/4289712
Answer:
a
Step-by-step explanation:
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what's a circumference of a circle with a diameter of 100 inches
Answer:
The circumference will be equal to 314 inches if we take 3.14 as pi's value.
Step-by-step explanation:
In order to find the circumference, we need to know the following...
circumference = diameter x π
π is a math constant pi.
So we just substitute the values and get that...
circumference = 100 x π
circumference = 100π
circumference ≅ 314 inches
Find the value of x in each parallelogram.
Answer:
x+113=180
Step-by-step explanation:
it's because of parallelogram property that opposite sides are parallel so being parallel this indicates co interior angle and it's sum is 180 so ,x+113=180,x=180_113,x=67 ans
[tex]\\ x^{2} \sqrt{x} \sqrt[n]{x} \frac{x}{y} x_{123} \leq \geq \neq \pi \alpha \beta \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \lim_{n \to \infty} a_n \\ x^{2} \geq \leq \neq \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \leq \\ \sqrt{x} \sqrt{x} \beta \beta \beta \frac{x}{y} \neq \leq \left \{ {{y=2} \atop {x=2}} \r[/tex]
Answer:
?????
Explanation: ????
A plane is 116 mi north and 182 mi east of an airport. Find x, the angle the pilot should turn in order to fly directly to the airport. Round your answer to the nearest tenth of a degree. (Listing BRAINLEST) !
Answer: 32.5
Step-by-step explanation:
Just look up trigonometry calculator should be the first thing
m to third power
n if m = 4 and n= 5
This graph represents a quadratic function. What is the function's equation written in factored form and in vertex form?
(graph in picture)
Step-by-step explanation:
f(x) = a(x-x1) (x-x2)
from the vertex, we get a:
0 = a(4-2)²- 8
4a = 8
a = 2
so, the equation:
f(x) = 2(x-0) (x-4)
f(x) = 2x(x-4)
f(x) = 2x² -8x
help me please 2t = 10
Answer: t = 5
Step-by-step explanation:
If 2t = 10, then we divide 10 by 2. The answer is 5.
Pls helpp!!!!!!!!!!!!!!!!!!
Answer:
A
Step-by-step explanation:
What is an equation of the line that passes through the points (4, 1) and (8, -3)?
Answer:
y=-1x+5
Step-by-step explanation:
find the value of x when r// s
Answer:
x = 81°
Step-by-step explanation:
Refer to the attachment for the steps.~
Inside a personal computer, 5 memory chips fit inside a 1-inch section. How much space do 3 memory chips take up?
A) 4/5 inch
B) 5/3 inch
C) 3/5 inch
D) 5/5 inch
uppose paired data are collected consisting of, for each person, their weight in pounds and the number of calories burned in 30 minutes of walking on a treadmill at 3.5 mph. How would the value of the correlation coefficient, r, change if all of the weights were converted to kilograms
Answer:
Has no effect on the correlation
Step-by-step explanation:
The correlation coefficient measures the strength of the relationship between two variables and it has no unit of measurement. All that correlation Coefficient does is to observe whether increase in variable x increases as variety able y increases and vice versa and how closely the values in each if the two variables are related. This is to emphasize that, the correlation Coefficient is independent of the unit of measurement of the two variables in question.
Hence, converting all weights to kilograms has no effect on the correlation Coefficient
PLEAASEEEEEE HELPPPPPP IM BEGGING SOMEONE PLEASEEEEEE PLEASEEEEEE HELPPPPPPPPPP
Answer:
the awnser is 124 YW:)
Step-by-step explanation:
62x2=124
Answer:
124 / C
Step-by-step explanation:
The angles of a triangle add up to 180 degrees. We know that angle k is 62, angle J is 90, that adds to 152. 180-152 gives us the third angle of the triangle as 28. Assuming that the two triangles are similar, the angle opposite of the 28 degree is also 28 degrees. The angles on the line should also add up to 180 degrees. So 180 - 28 - 28 = 124.
please solve right now
Answer:
45 mph
251 ft
Step-by-step explanation:
[tex] s = \sqrt{30fl} [/tex]
a.)
[tex] s = \sqrt{30(0.85)(80)} [/tex]
[tex] s = \sqrt{2040} [/tex]
[tex] s = 45 [/tex]
Answer: 45 mph
b.)
[tex] 80 = \sqrt{30(0.85)l} [/tex]
[tex] 80^2 = (\sqrt{25.5l})^2 [/tex]
[tex] 25.5l = 6400 [/tex]
[tex] l = 251 [/tex]
Answer: 251 ft
Company is preparing budgets for the quarter ending June 30, 2019.
Budgeted sales in units for the next five months are:
April 20,000
May 50,000
June 30,000
July 25,000
Required:
a. Prepare Sales budget for April, May & June assuming selling price per unit is 15.
b. Prepare production budget for April, May & June if the company wishes ending inventory as 10 % of next month sales units.
Answer:
Results are below.
Step-by-step explanation:
First, we need to determine the sales budget for April, May, and June:
Sales budget April:
Number of units sold= 20,000
Sales revenue= 20,000*15= $300,000
Sales budget May:
Number of units sold= 50,000
Sales revenue= 50,000*15= $750,000
Sales budget June:
Number of units sold= 30,000
Sales revenue= 30,000*15= $450,000
Now, the production budget using the following formula:
Production= sales + desired ending inventory - beginning inventory
Production budget April:
Sales= 20,000
Desired ending inventory= 50,000*0.1= 5,000
Beginning inventory= 0 (assuming no beginning inventory)
Production= 25,000
Production budget May:
Sales= 50,000
Desired ending inventory= 30,000*0.1= 3,000
Beginning inventory= (5,000)
Production= 48,000
Production budget June:
Sales= 30,000
Desired ending inventory= 25,000*0.1= 2,500
Beginning inventory= (3,000)
Production= 29,500
Which statement is true?
Question 18 options:
A)
– |–13| = 13
B)
|–13| = 13
C)
– |13| = 13
D)
|13| = – 13
answer
A. - ( -13) = 13
thank. u
Answer:
b
Step-by-step explanation:
A is incorrect cause it would be a negative
C would also be a negative
D is a positive
so yea
find the midpoint of A and B where A has tge coordinates (8, 5) and B has the coordinates (3, 7)
Answer:
[tex]midpoint = ( \frac{8 + 3}{2} , \: \frac{5 + 7}{2} ) \\ = ( \frac{11}{2} , \: \frac{12}{2} ) \\ = (5.5, \: 6)[/tex]
The city of Atlanta wants to paint a cylindrical-shaped water tank. The height of the tank is 88 feet and the radius is 25 feet. How much water will this tank hold
Answer:
The tank can hold water 172,857.14 cubic feet
Step-by-step explanation:
Given that the shape is cylindrical, the amount of water it can hold may be determined using the formula for the volume of a cylinder.
The volume V of a cylinder whose base radius r and height is h is given as
V = Pir^2h where Pi is 22/7
Given that the height of the tank is 88 feet and the radius is 25 feet, then the volume V
= 22/7 * 25^2 *88
= 172,857.14 cubic feet
A cooler contains twelve bottles of sports drink: three lemon-lime flavored, four orange
flavored, and five fruit-punch flavored. You randomly grab a bottle. It is a lemon-lime or an
orange.
A).583
B).333
C).727
D).714
What is the value of x?
Answer:
45 degree
Step-by-step explanation:
3x - 9 + 24 + 30 = 180 degree (being sum of interior angles of a triangle)
3x + 45 = 180
3x = 180 - 45
x = 135/3
x = 45 degree
Answer:45 độ
Step-by-step explanation:
3x - 9 + 24 + 30 = 180 độ (là tổng 3 góc của tam giác)
3x + 45 = 180
3x = 180 - 45
x = 135/3
x = 45 độ
4. If z, a+bi and z, c+di represent two complex numbers with real components a, b, c and d, then which of the following represents the coefficient of i in the product of z, and z,?
(1) ac-bd
(2) ad-be
(3) ab+cd
(4) be+ad
Answer:3
Step-by-step explanation:
A person places a bet on a new type of Roulette wheel with the following probabilities and outcomes: 45% probability of RED: Person Wins $100 45% probability of BLACK: Person Loses $100 10% probability of GREEN: Person Loses $10 What is the expected dollar value for a person playing this game
Answer:
The expected dollar value for a person playing this game is -$1, that is, a loss of $1.
Step-by-step explanation:
Expected dollar value:
Probability of each outcome multiplied by it's monetary outcome.
Outcomes:
45% probability of winning $100.
45% probability of losing $100.
10% probability of losing $10.
What is the expected dollar value for a person playing this game?
[tex]E = 0.45*100 - 0.45*100 - 0.1*10 = -1[/tex]
The expected dollar value for a person playing this game is -$1, that is, a loss of $1.
Solve for x in the triangle. Round your answer to the nearest 10th.
Answer:
x = 35.3
Step-by-step explanation:
tan(63°) = x/18
18 · tan(63°) = x
35.3 = x