Answer:
0.11507
Step-by-step explanation:
Given that:
Mean (m) = 25
Standard deviation = 5
Proportion of subject in the population with score above 31
P(x > 31)
Obtain the standardized score of x = 31
Zscore = (x - m) / s
Zscore = (31 - 25) / 5
Zscore = 6 / 5
Zscore = 1.2
Hence, p(Z > 1.2)
Using the Z probability calculator :
p(Z > 1.2) = 0.11507
Please help!!!!!!!!!
Answer:
$42.75
Step-by-step explanation:
18.80+23.95=$42.75
The area of a rectangle is 102 cm, if it's breadth is 6 cm find the length.
Need it ASAP
Step-by-step explanation:
A=102cm2
A=Lengthxbreadth
102=Lengthx6
Length=17 cm
I need help on these two pls
Answer:
Much larger than 1 for both of them
Step-by-step explanation:
Write equations in slope-intercept form for three different lines that intersect at (-2,3).
Answer:
y = 3/2x + 6
y = -1/4x + 5/2
y = -x + 1
Step-by-step explanation:
I used the point (-2, 3) with a variety of slopes (3/2, -1/4, -1) and plugged the point and slope into y=mx+b to get 'b' (the y-intercept).
2 year loan at 6 percent interest rate and $264.00 paid wa
Answer:2,576
Step-by-step explanation:
what’s the slope?
a line has the given equation y=-3x-10
Answer: slope= -6.0/2.0= -3.0
Step-by-step explanation:
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is -10.000 and for x=2.000, the value of y is -16.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -16.000 - (-10.000) = -6.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
x-intercept = -10/3 = -3.33333
y-intercept = -10/1 = -10.00000
Find the ratio :
1/2 hour to 45 minutes
Answer:
The answer is 2 : 3.
Step-by-step explanation:
First, you have to convert the units to minutes :
1 hr = 60 min
1/2 hr = 60 × 1/2 = 30 min
Then, you have to simplify the ratio to simplest form :
30 : 45
= (30÷15) : (45÷15)
= 2 : 3
Answer:
To see the ratio, we should have both in the same unit. We can pass 1/2 hour to minutes, as we know one hour are 60 minutes:
60/2 = 30
So we know half hour are 30 minutes.
Now, we know the ratio 30:45, but we can simplify it, as a fraction.
To simplify it, we will divide both numbers by the same quantity, in this case, divide 30 and 45 by 15 (a it's a divisor):
30/15 = 2 and 45/15 = 3, so the ratio is 30:45, which is equivalent to 2:3
Find the equation of the line through point (-3, 8) and perpendicular to y = x + 14. Use a forward slash (i.e. "M) for
fractions (e.g. 1/2 for 3).
Answer:
y+x = 5
Step-by-step explanation:
Given the equation y = x + 14
Get the slope first
The slope m = 1
Since the required equation is perpendicular to the line, the required slope will be M = -1/1 = -1
Get the required equation using the equation y-y0 = m(x-x0)
(x0, y0) = (-3, 8)
y - 8 = -1(x-(-3))
y-8 = -(x+3)
y-8 = -x-3
y+x = -3+8
y+x = 5
Hence the required equation of the line is y+x = 5
The toy shop makes 500 containers of slime a day. How many containers of slime will they make in 30 days? Use what you know about factors of 10 to explain your answer.
Answer:
1,500
Step-by-step explanation:
Because 500 times 30 equals 1,500
A person bought some cosmetics from wholesale market at the rate of Rs 360 per dozen he sells it at Rs 80 a pair find the gain percent plz solve it step by step
Answer:
i'm not sure but i think the answer is 5%
Step-by-step explanation:
the number five is where the percentage sign is
21) A consumer group was interested in comparing the operating time of cordless toothbrushes manufactured by two different companies. Group members took a random sample of 18 toothbrushes from Company A and 15 from Company B. Each was charged overnight and the number of hours of use before needing to be recharged was recorded. Company A toothbrushes operated for an average of 119.7 hours with a standard deviation of 1.74 hours; Company B toothbrushes operated for an average of 120.6 hours with a standard deviation of 1.72 hours. The 90% confidence interval is (-1.93, 0.13). The correct interpretation is
Answer:
We accept H₀ we don´t have evidence of differences between the two toothbrushes
Step-by-step explanation:
Toothbrushes A
Sample mean μₐ = 119,7
Standard deviation sₐ = 1,74
Sample size nₐ = 18
Toothbrushes B
Sample mean μ₀ = 120,6
Standard deviation s₀ = 1,72
Sample size n₀ = 15
With CI = 90 % CI = ( -1,93 ; 0,13 ) that s the acceptance region for H₀
Test hypothesis is
H₀ μₐ = μ₀
Hₐ μₐ ≠ μ₀
We need to calculate t(s) as
t(s) = ( μₐ - μ₀ ) /Sₓ * √ (1/nₐ) + 81/n₀)
and see if it is insde CI
Sₓ = (nₐ - 1 ) * sₐ² + ( n₀ - 1 ) * s₀² / nₐ + n₀ - 2
Sₓ = 17*3,03 + 14*2,96 / 31
Sₓ = (51,51 + 41,44 )/ 31
Sₓ = 2,998
t(s) = 0,9 / 2,998*√(1/18) + (1/15)
t(s) = 0,9 / 1,04
t(s) = 0,87
Find the midpoint M of the line segment joining the points: C = (2, 7) and D= (-8, –5)
Answer:
the answer is (-3, 1)
luiweytie74gtewkgfrewiurhge
Step-by-step explanation:
word word word word
Find the domain of fg f(x)=x+2 g(x)=1/x+2
A. All real numbers
B. All real numbers, expect 2
C. All real numbers, except-2
D. (-2,0) U [2,-2)
Answer: A. All real numbers
Step-by-step explanation:
Find fg;
f(x) * g(x) = (x + 2) * ( 1 / x + 2)
= ( x + 2) / (x + 2)
= 1
In giving 1 as the product, the domain of fg is any real number.
18. The radius of a circle is increasing at a constant rate of 3 cm per second. What is the rate of increase (at any point)
of the area of the circle?
Step-by-step explanation:
you should have to give more points for this answer
The user manual for Layla’s phone notes that the device can be damaged when operated at temperatures below -20°C and above 45°C. Layla wants to know what these ranges are in degrees Fahrenheit and writes these inequalities to rewrite the relationship where F is degrees Fahrenheit.
5/9 (f - 32) 45
Which statement best describes the temperature ranges Layla should avoid while using her phone?
A.Layla should avoid using her phone in temperatures below -4°F and above 113°F.
B.Layla should avoid using her phone in temperatures above 21°F and below 57°F.
C.Layla should avoid using her phone in temperatures below 21°F and above 57°F.
D.Layla should avoid using her phone in temperatures above -4°F and below 113°F.
Layla should avoid using her phone in temperatures below -4°F
and above 113°F.
pls help this is not graded
Answer:
3rd one
Step-by-step explanation:
Luis buys 6 pizza's for $36.90 at the Italian restaurant, how much does 1 pizza cost?
Answer:
$6.15 for 1 pizza.
Step-by-step explanation:
The answer is 6.15 because 36.90 divided by 6 is 6.15.
P.S Can I have brainliest?
PLS HELP ME
You will need to measure five different people. Record your measurements on a piece of paper. Using a tape measure or ruler, measure the length (in inches) of a person’s left foot and then measure the length (in inches) of that same person’s forearm (between their wrist and elbow). Refer to the diagrams below. You will have two measurements for each person.
(An easy way to measure the length of a foot is to have your subject stand on a piece of paper. Then, trace their foot and measure the outline once they move off the paper.)
To measure the forearm, measure inside the arm, between the wrist and the elbow.
Part 2
Organize your data and find the rate of change.
Create a table of the measurements for your data. Label the forearm measurements as your input and the foot measurements as your output.
Select two sets of points and find the rate of change for your data.
Describe your results. If you had to express this relation as a verbal statement, how would you describe it?
Part 3
Compare rates of change.
The equation below can be used to find the length of a foot or forearm when you know one or the other.
(length of the foot) = 0.860 • (length of the forearm) + 3.302
If you let y = length of the foot and x = length of the forearm, this equation can be simplified to
y = 0.860x + 3.302.
Using this equation, how long would the foot of a person be if his forearm was 17 inches long?
What is the rate of change of the equation from Part A?
Compare the equation from Part A to your data. Are they the same? Which has a greater rate of change? Why do you think the values are different?
Is the relation in your data a function? Why or why not? Could the equation in Part A represent a function? Why or why not? Explain your answer.
For this option you will submit the details from all three parts. Submit your measurements, the table, and description that you created in Parts 1 and 2. Submit your answers to the questions from Part 3.
Answer:
part 1 its telling you to measure people
part two is telling you to put it into a graph and find the rate of change. more than likely there won't be a rate of change for you
part three:
y = 0.860x + 3.302
y = 0.860(17) + 3.302
0.860(17) = 14.62
14.62 + 3.302 = 17.922
y = 17.922
sorry this is as far as i had gotten
A retailer (GameStop, Target, or other stores) will receive 23% of the sale price of a video game. If a retailer sells
a video game for $60.00, how much money will the retailer receive
Answer:
$13.80
Step-by-step explanation:
23% of 60 is 13.8, therefore the retailer will receive $13.80 if a $60.00 video game is sold.
The crisis in the housing market during the most recent economic recession led to lower vacancy rates in the apartment industry. This, in turn, has resulted in an increase in monthly rents for apartments. Suppose a random sample of 40 apartments had an average rent of $1,090. Assume the standard deviation for the population of apartment rents is $260. Determine the 98% confidence interval for this sample.
Answer:
(994.37, 1185.62)
Step-by-step explanation:
Given that :
Mean (m) = 1090
Standard deviation (s) = 260
Samole size (n) = 40
α = 98%
Using the relation :
Confidence interval = mean ± Error
Error = Zcritical * (standard deviation / sqrt (n))
Zcritical at 98% = 2.326
Error = 2.326 * (260 / sqrt(40))
Error = 95.620951
Hence,
Confidence interval :
Lower boundary = 1090 - 95.620951 = 994.379049
Upper boundary = 1090 + 95.620951 = 1185.620951
(994.37, 1185.62)
Maria receives a certain percentage, %, as a bonus, for each pair of shoes she sells. Last week she sold $10000 of shoes and earned $270 as a bonus. What was her bonus percentage?
2.7%
27%
2.07%
10%
I need help bad I will mark you as king or what every pkz get it right I can’t get it right plz help
Answer:
d=6c it looks like. good luck
write an equation in point slope form of the line that passes through the point (0,1) and has a slope if -3/2
Step-by-step explanation:
y - 1 = -3
x - 0 2
2y - 2 = -3x
2y = -3x + 2
WILL GIVE BRAINLEIST HELP ASAP
Answer:
x = 12
y = 9
Step-by-step explanation:
[tex]\triangle ACD \cong \triangle BCD.. (given) \\\\
\therefore AC \cong BC\\\\
\therefore m(AC) = m(BC) \\\\
\therefore 2x = x + 12\\\\
\therefore 2x - x = 12\\\\
\therefore x = 12\\\\
Similarly \\\\
BD \cong AD\\\\
\therefore m(BD) = m(BD) \\\\
2y - 4= y + 5\\\\
2y - y = 4 +5\\\\
y = 9
[/tex]
what is the slipe of the line that passes through the two points (3,-4) and (5,8)
Answer:
m=6
Step-by-step explanation:
Using the slope formula-
m=8+4/5-3
m=12/2
m=6
Answer:
6
Step-by-step explanation:
slope =∆y
∆x
=8--4/5-3
=6
Morgan's mom wants to borrow $720 to buy a new computer. The store will charge her 8% simple interest for one year. How much will she have to pay back if she pays the full amount in one year?
Answer:
$777.60
Step-by-step explanation:
8/100 = 0.08
0.08 * 720 = 57.6
57.6 + 720 = 777.6
Answer:
Step-by-step explanation:
8/100*720=5760/100
=$57.6
$720-$57.6=$662.4
she will pay back $662.4.
Jamie scored an 85% on a test that had 20 questions on it. How many question did she get right? How many questions did she get wrong? PLS ANSWER FASTTT!! :)
Answer:i think it is like 17
Step-by-step explanation:
30 POINTS FOR CORRECT ANSWER! NO TROLLING
As the ball moves from Point 3 to Point 4, which energy conversion is taking place?
Group of answer choices
potential to kinetic
kinetic potential
thermal to kinetic
kinetic to thermal
Answer: potential to kinetic
Step-by-step explanation:
Answer:
Kinetic Energy is defined as energy that a body possesses by virtue of being in motion.
Kinetic Energy is defined as energy that a body possesses by virtue of being in motion.As you walk down stairs, as water boils, and as the planets orbit the sun, kinetic energy is being utilized.GRAVITATIONALApple falls from tree and rolls behind the trunk.
GRAVITATIONALApple falls from tree and rolls behind the trunk.An object’s relative location to a gravitational field is the gravitational potential an object has to do work. Earth’s gravity will pull a ripe apple from the branch and convert it into gravitational kinetic energy.NUCLEARElectrons circle a nucleus at the atomic level.
NUCLEARElectrons circle a nucleus at the atomic level.The mass of an atom’s nucleus is almost entirely comprised of its protons and neutrons. The force binding them together is considered potential energy because it causes them to weigh less than the sum of their parts.ELASTICSpring animation expands and compresses.
ELASTICSpring animation expands and compresses.Elastic potential energy is present when the object, such as a spring, is in a deformed state but can return to a static state. This means the spring has elastic potential energy when it is either stretched or compressed.CHEMICALBattery animation motions towards a full charge.
CHEMICALBattery animation motions towards a full charge.Every animate and inanimate object is the result of chemical reactions. Chemicals in a battery have the potential to be converted into motion, therefore they have chemical potential energy.Potential Energy is defined as the energy stored by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
Potential Energy is defined as the energy stored by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.When you (or a rock) are standing at the top of a hill, you possess more potential energy than when standing at the bottom. This is because your position relative to the Earth’s center of gravity can exert potential energy upon you to bring you closer to that center.Energy can neither be created nor destroyed, this is the conservation of energy law. However, energy can be altered from one form to another.
Energy can neither be created nor destroyed, this is the conservation of energy law. However, energy can be altered from one form to another.All forms of energy are either potential or kinetic energy. Potential refers to stored energy while kinetic is energy in motion.
Energy can neither be created nor destroyed, this is the conservation of energy law. However, energy can be altered from one form to another.All forms of energy are either potential or kinetic energy. Potential refers to stored energy while kinetic is energy in motion.All energy, whether potential or kinetic, is measured in Joules (J).
1.298 -
Prime number
Answer:
what are you asking rlly
What is the value of x in the equation of y=6x+2.3
Answer:
The answer is x=y/6 - 0.383 (3 being repeated) , hope this helps you.
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
I think it is x=y/6 - 0.383 (3 being repeated)
Step-by-step explanation:
Hope this helped have an amazing day!
