Answer:
They walk 9 laps
Step-by-step explanation:
If the run for 6 laps you need to multiply how many times they walked when they ran for 2 laps by 3 (3*3) which should give you 9
Answer:
5
Step-by-step explanation:
please answer for help
Answer:
TS=22
Step-by-step explanation: Since we know the triangles are proportional, we need to set up an proportion to find TS. First, let find which sides are correspond with each, TS and MN does and US and NQ does. So we set up a proportion that includes.
TS/US=MN/NQ: Let plug in the numbers
3x+1/26=5x-2/39: Then cross multiply
39(3x+1)=26(5x-2): Then simplify
117x+39=130x-52: Subtract 117x from both sides
39=13x-52: Add 52 to both sides
91=13x: Divide 13 by both sides
7=x: Then plug it in to TS
3(7)+1=22
Please need help on this please
A person operating a machine can mow 0.75 acres in 1/2 hour. What is the rate, in acres per hour, that the person can mow? Write your answer as a decimal.
Answer:
1.5 acres per hours
Step-by-step explanation:
.75 is half an hour so just double the .75 to get the rate of an hour
Answer:
1.5 acres per hours
Step-by-step explanation:
im just smart like that
A particular electric utility charges customers different rates depending on their daily rate of energy consumption: $0.05/kWh up to 20 kWh, and $0.10/kWh for all energy usage above 20 kWh in any 24-hour period. (a) Calculate how many 100 W light bulbs can be run continuously for less than $10 per week. (b) Calculate the daily energy cost if 2000 kW of power is used continuously.
Answer:
(a) the number of 100W light bulbs is 11
(b) the daily cost of 2000 kW is $4,800
Step-by-step explanation:
charge of energy consumption up to 20 kWh = $0.05/kWh
charge of energy consumption above 20 kWh = $0.10/kWh
(a) number of 100 W light bulbs that can be run continuously for less than $10 per week
Total energy consumed by 100 W in 1 week = (0.1 kW) x (7 x 24 h)
= 16.8 kWh
Charge associated with this consumption = $0.05/kWh
let the number of 100 W light bulbs = n
[tex]n(\frac{\$ 0.05}{kWh} \times 16.8 kWh) = \$10\\\\n(0.84) = 10\\\\n = \frac{10}{0.84} \\\\n = 11.9[/tex]
Since 0.9 is not a whole number, the number of 100 W light bulbs is 11.
(b) if 2000 kW is used continuously
total energy consumption = 2000 kW x 24 h = 48,000 kWh
The daily cost is calculated as;
[tex]= \frac{\$0.10 }{kWh} \ \times \ 48,000 kWh\\\\= \$ 4,800[/tex]
A particular electric utility charges customers different rates depending on their daily rate of energy consumption :
(a) the number of 100W light bulbs is 11
(b) the daily cost of 2000 kW is $4,800
"Energy Consumption"Given :
Charge of energy consumption up to 20 kWh = $0.05/kWh
Charge of energy consumption above 20 kWh = $0.10/kWh(
Part a)
Number of 100 W light bulbs that can be run continuously for less than $10 per week
Total energy consumed by 100 W in 1 week = (0.1 kW) x (7 x 24 h)Total energy consumed by 100 W in 1 week = 16.8 kWhCharge associated with this consumption = $0.05/kWh
Let the number of 100 W light bulbs = n[tex]n\left(\frac{\$0.05}{kWh}\cdot16.8kWh\right)=\$10\\n\left(0.84\right)=10\\n=\frac{10}{0.84}\\n=11.9[/tex]
Since 0.9 is not a whole number.
Thus, the number of 100 W light bulbs is 11.
Part b)
2000 kW is used continuously
Total energy consumption = 2000 kW x 24 h
Total energy consumption = 48,000 kWh
The daily cost is calculated by:
[tex]\frac{\$0.10}{kWh}\cdot48000\ kWh
Daily cost=\$4800[/tex]
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The surface area of a ball is 576 pi square millimeters. What is the ball’s radius? Recall the formula S A = 4 pi r squared. 12 millimeters 14 millimeters 24 millimeters 48 millimeters
Answer:
r = 12 millimeters
Step-by-step explanation:
Surface area of a ball = 4πr²
Surface area of a ball = 576 pi square millimeters
Surface area of a ball = 4πr²
576π = 4πr²
r² = 576π / 4π
r² = 144
Find the square root of both sides
√r² = √144
r = 12
r = 12 millimeters
Answer:
The answer is 12 millimeters
Step-by-step explanation:
I'm doing it rn
What is the complete factorization of the polynomial below?
x3 + 8x2 + 19x + 12
O A. (x+4)(x+3)(x+1)
O B. (x + 4)(x-3)(x - 1)
C. (x+6)(x + 2)(x+1)
O D. (x+6)(x-2)(x-1)
Using the Factor Theorem, it is found that the complete factorization of the polynomial x³ + 8x² + 19x + 12 is given by:
A. (x+4)(x+3)(x+1)
What is the Factor Theorem?The Factor Theorem states that a polynomial function with roots [tex]x_1, x_2, \codts, x_n[/tex] is given by:
[tex]f(x) = a(x - x_1)(x - x_2) \cdots (x - x_n)[/tex]
In which a is the leading coefficient.
In this problem, using a calculator, the roots of the polynomial x³ + 8x² + 19x + 12 are x = -4, x = -3 and x = -1, hence:
f(x) = (x + 4)(x + 3)(x + 1)
Which means that option A is correct.
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what do you call two math teachers who bowl?
Answer:
69
Step-by-step explanation:
are these ratios equivalent 35 forks to 45 7 forks to 9 spoons yes or no
Answer:
Yes
Step-by-step explanation:
35:45 is the same as 7:9 because if you divide both side by 5, 35:45 goes to 7:9
2) An $80 text book was on sale for $49.60 at the used book store. By what percent did the book decrease in price?
The answer fam is......... 38%
Answer: 38%
Step-by-step explanation:
80x0.62=49.60
Olivia completed a high dive from a platform at a recent competition.
The graph below shows her distance from the pool, in meters, as a
function of time, in seconds.
Answer:
B
Step-by-step explanation:
Answer:
B). It takes Olivia about 3.2 seconds to enter the pool.
Hugo withdrew some money from his bank account. He spent one third of the money for gasoline. Then he spent half of what was left for a haircut. He bought lunch for $6.55. When he got home, he had $13.45 left.
How much did he withdraw from the bank?
a. $60
c. $70
b. $50
d. $40
Answer:
fmgrjn
Step-by-step explanation:
graph y-1=-2(x-2) help me
If the triangles are congruent,
then y = [?].
4x+1
13
2x+y
8x-2y
Answer:
4x+1
Step-by-step explanation:
The way i got this was because sometimes on shapes there are 4 side and so you would multiply the number of sides then add some more to it.
A candy bar that originally sold for $0.65 undergoes a 7% price increase each year. Find the new cost of the candy bar after 15 years. Round your answer to the nearest cent.
The new cost of the candy bar after 15 years is $
Answer:
10.4325
Step-by-step explanation:
For 1 year: (0.65) + (0.65)(0.07) = 0.6955
For 15 years: 0.6955 X 15 = 10.4325
All together: (0.65+(0.65*0.07))*15 = 10.4325
The new cost of the candy bar after 15 years is $1.8.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Given that, a candy bar that originally sold for $0.65 undergoes a 7% price increase each year.
Use Amount = Principal(1+R/100)ⁿ, where n is number of years.
Total amount = 0.65(1+7/100)¹⁵
= 0.65(1.07)¹⁵
= 0.65×2.759
= $1.8
Therefore, the new cost of the candy bar after 15 years is $1.8.
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10
Which of the following is the midpoint between (3, 2) and (-3, 4)?
(0, 3)
(0, 3/2)
(6, 3/2)
(-6, 3)
Answer:
(0, 3)
Step-by-step explanation:
(0, 3) is the following is the midpoint between (3, 2) and (-3, 4)
Which of the following statements is true about systematic random sampling?
A- Systematic random sampling requires a finite population size.
B- Systematic random sampling catches all patterns present in the population.
C- Systematic random sampling can be used, even if knowledge of the entire population is not known.
D- The starting point can always be the first person seen, as long as the gap between the first and second person is a random number.
Systematic random sampling involves a selection technique in which samples are selected at fixed intervals. Hence, the true statement is "Systematic random sampling can be used, even if knowledge of the entire population is not known."
Systematic random sampling would fail to catch all patterns because the samples are selected at periodically at fixed intervals, hence, the possibility of missing pattern is very possible. Starting point could be at any point and hence, might not be the first sample in the population.However, without knowing the entire population size, systematic random samples could be selected from the population.
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Two hundred people responded to a survey. Of those who had green eyes, 7 had blonde hair, 9 had brown hair, and 2 had red hair. Construct a two-day table to display these data. Then identify the least common combination of eye and hair color. Explain.
Answer:
18
Step-by-step explanation:
How many % cup servings are in % cup?
Answer:
I can't see all the answers
A friend has offered to play a gambling game with you that involves flipping a coin that she has provided. You want to test the coin in advance for fairness before agreeing to gamble. Your friend is willing to let you flip it 50 times to determine if the probability of getting heads is actually 0.50, as it should be if the coin is fair. Is it necessary to check the 10% condition in this case
Answer:
The 10% condition would not apply here
Explanation:
The 10% condition is the recommended size of sample from the population to get a non biased result. The 10% condition requires that the sample be not more than 10% of the population.
Tossing a coin is an example of a Bernoulli trial. A Bernoulli trial is one that has two possible outcomes, this face of the coin or the other face of the coin. The 10% condition does not apply to Bernoulli trials that are independent events.
Therefore the 10% condition would not apply here because tossing a coin is an an independent event. An independent event is one with replacement.
1. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: s + 7 *
2. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: 5r - 4 *
3. if r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: t - s *
4 .If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: u + r *
5. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: 11t - 7 *
6. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: 6 + 3u *
7. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: 4r - 10s *
8. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: (r with an expnent of 2 +8)
9. If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: *
30 over r
10.If r = 5, s = 2, t = 7, and u = 1 then evaluate the expression: *2t with an exponent of 2-18
Answer:
1. s + 7 = 9
2. 5r - 4 = 21
3. t - s = 5
4. u + r = 6
5. 11t - 7 = 70
6. 6 + 3u = 9
7. 4r - 10s = 0
8. r with an expnent of 2 +8 = [tex]r^{2} + 8 = 33[/tex]
9. 30 over r = [tex]\frac{30}{5}[/tex] =6
10. 2t with an exponent of 2-18 = [tex](2t)^{2} - 18 = 178[/tex]
Step-by-step explanation:
1. If r = 5, s = 2, t = 7, and u = 1 then,
s + 7 = 2 + 7 = 9
2. If r = 5, s = 2, t = 7, and u = 1 then,
5r - 4 = 5(5) - 4 = 25 - 4 = 21
3. if r = 5, s = 2, t = 7, and u = 1 then,
t - s = 7 - 2 = 5
4 .If r = 5, s = 2, t = 7, and u = 1 then,
u + r = 1 + 5 = 6
5. If r = 5, s = 2, t = 7, and u = 1 then,
11t - 7 = 11(7) - 7 = 77 - 7 = 70
6. If r = 5, s = 2, t = 7, and u = 1 then,
6 + 3u = 6 + 3(1) = 6 + 3 = 9
7. If r = 5, s = 2, t = 7, and u = 1 then,
4r - 10s = 4(5) - 10(2) = 20 - 20 = 0
8. If r = 5, s = 2, t = 7, and u = 1 then,
r with an exponent of 2 +8 = [tex]r^{2} + 8 = 5^{2} + 8 = 25 + 8 = 33[/tex]
9. If r = 5, s = 2, t = 7, and u = 1 then,
30 over r = [tex]\frac{30}{r} = \frac{30}{5} = 6[/tex]
10.If r = 5, s = 2, t = 7, and u = 1 then,
2t with an exponent of 2-18 = [tex](2t)^{2} - 18 = (2.7)^{2} - 18 = (14)^{2} - 18 = 196 - 18 = 178[/tex]
PLEASE HELP! Need answers ASAP. Thank you!
1.For each of 200 randomly selected cities, Gary recorded the number of churches in the
city (x) and the number of homicides in the past decade (y). He calculated the linear
correlation coefficient and was surprised to find a strong positive linear correlation for
the two variables. Does this suggest that building new churches causes an increase in
the number of homicides? Why do you think that a strong positive linear correlation
coefficient was obtained? Explain your answer with reference to the term lurking
variable.
Answer:6
Step-by-step explanation:
Write the equation in slope intercept form of the line perpendicular to the given line that passes through the-given points (8,-5);y=2x+3
Answer:
y -y1= m(x-x1) is in point slope form
y --9 = -2 (x-10)
y+9 = -2(x-10)
Step-by-step explanation:
HOPE THIS HELPS!!!
What is meant by conflict cycle?
Answer:
It all starts with something that creates "Tension" between you and another person. "Tension" leads to "Role Dilemma" or blaming the other person for the tension and the problem. ... Then both of you start "Gathering Injustices" to use as ammunition for the inescapable showdown.
Solve by elimination and show all steps please
3x=2y-7, 2x-y=10
Answer:
if you download the app photomath it will help you
Step-by-step explanation:
I promise!
Step-by-step explanation:
x=27 and y= 44
.......................
Please help with this I really need it
Answer:
Step-by-step explanation:
solve for x.
if possible could you describe how you got to the answer too- i'm really not getting this
Step-by-step explanation:
By Side-Splitter Theorem,
20 / 30 = 36 / (x + 5 + 30).
Therefore (x + 5 + 30) = 54, x = 19.
Answer:
x=59
Step-by-step explanation:
hope this helped
Jeffrey is going to charge an initial fee of $10 for mowing lawns, plus an hourly rate. He knows that he wants to
charge a total of $40 to mow his neighbor's yard, and it will take him 2 hours to complete the job.
At the same rate, how much should he charge another customer for a 4-hour job?
A)
$100
B)
$15
C)
$60
D)
$70
Answer:
B 15
Step-by-step explanation:
10 dollar + 2 hours of work 15 x 2
best describes the length of the ribbon
[tex] 2 \frac{1}{2} \ inches [/tex].
The ribbon's length ends at 2 and half. Thus, the length must be equal to 2 ½ inches.
The volume, of a rectangular solid with length L, width W, and height H is given by the formula V = LWH.
Use this formula to write a polynomial in standard form that models, or represents, the volume of the open box.
The volume of the open box is ____
Answer:
[tex]V(x) = 4x^3-34x^2+66x[/tex]
Step-by-step explanation:
Polynomials
We'll apply the polynomials to geometry.
The volume of a rectangular box can be calculated as
V = LWH
Where L is the length, W is the width, and H is the height of the box.
The figure shows the three dimensions as a function of the variable x:
W = 6 - 2x
L = 11 - 2x
H = x
Substituting in the formula of the volume:
[tex]V(x) = (11-2x)(6-2x)(x)[/tex]
Multiplying the first two factors:
[tex]V(x) = (66-22x-12x+4x^2)(x)[/tex]
Simplifying:
[tex]V(x) = (66-34x+4x^2)(x)[/tex]
Multiplying by x:
[tex]V(x) = 66x-34x^2+4x^3[/tex]
Reordering:
[tex]\boxed{V(x) = 4x^3-34x^2+66x}[/tex]
Find the vertex and focus of the parabola.
y^2 - 12y + 4x + 4 = 0
Answer:
Vertex: (8,6) Focus (7,6)
Step-by-step explanation:
32/4=8
Half of 12=6