Answer:
Sorry but wheres the rest?
What formula to use for determining the probability that the mean stress level for a sample of 70 employees will fall above 52? (mean =50; STD 10)
Answer:
0.4207
Step-by-step explanation:
Determine z-score
[tex]z=\frac{\bar{x}-\mu}{\sigma/\sqrt{n}}\\ \\z=\frac{52-50}{10/\sqrt{70}}\\ \\z\approx1.6733[/tex]
Find P(Z>1.6733)
[tex]P(Z > 1.6733)=normalcdf(1.6733,\infty)\approx0.4207[/tex]
Therefore, the probability that the mean stress level for a sample of 70 employees will fall above 52 is 0.4207
A man won a lotto jackpot and he spent 2/5 of the money on luxury cars and 1/4 on buying a house. What fraction of his lotto earnings is remaining
spent : 2/5 + 1/4 = 8/20 + 5/20 = 13/20
remains = 7/20
The 7/20th fraction of his lotto earnings is remaining.
Let us say the man has $100
Money spent on luxury cars = 2/5 of the money
Money spent on luxury cars = 2/5 * 100 = $40
Money spent on buying a house = 1/4 of the money
Money spent on buying a house = 1/4 * 100 =$25
Money left with the man = 100-40-25 = $35
$35 is what fraction of $100?$35 is 35/100 fraction of $100.
35/100 = 7/20
So, the 7/20th fraction of his lotto earnings is remaining.
Hence, the 7/20th fraction of his lotto earnings is remaining.
To get more about fractions visit:
https://brainly.com/question/78672
Iman had twice as much money as Daphne at first. After Iman had spent $128 of her money on a bag and Daphne had spent $40 of her money on a dress, they had an equal amount of money left. How much money did each of them have left? pls help me.
Step-by-step explanation:
x = Iman's money
y = Daphne's money
x = 2y
x - 128 = y - 40
now we use the first equation as identity in the second equation and get
2y - 128 = y - 40
y - 128 = -40
y = $88
x = 2y = $176
these were the starting values.
now, after spending, they have both left
176 - 128 = 88 - 40 = $48
7 1/6 - 62/5 = ?
O A. 45
O B. 145
O C. 1/5
O D. 1335
Answer:
-17/32
this is the answer I got
Find f(3) and interpret its meaning.
Answer:
f(3) = 425
f(3) is the elevation of a mountain climber after 3 hours of climbing.
Step-by-step explanation:
So we are given a line that relates time to elevation. We are also given that the equation of the line is f(x) = 125x + 50. From looking at the graph given, we can see that x is the time, in hours, and y, or f(x), is the height, in feet. We are asked to find f(3) and interpret it's meaning.
To find f(3), we would have to find what f(x) is when x = 3. To do this, lets plug in 3 for x into the given equation:
f(3) = 125(3) + 50 = 425
So f(3) = 425. Now, we already know that x is the time in hours and y, or f(x), is the elevation in feet. We set x to 3 when solving for f(3). We have also found that f(3), or y when x = 3, is 425. So f(3), or 425, is the elevation after 3 hours.
I hope you find my answer and explanation to be helpful. Happy studying.
find the multiplication inverse of 3/5.
Answer:
[tex] \frac{5}{3} [/tex]
Step-by-step explanation:
[tex]let \:the \: multiplicative \: inverse \: be : x \\ then \: \frac{3}{5 } \times x = 1 \\ \frac{3x}{5} = \frac{1}{1} \\ 3x \times 1= 5 \times 1 \\ 3x = 5 \\ x = \frac{5}{3} [/tex]
♨Rage♨
Coach Harns wanted to buy new basketballs. He has a $200 budget to purchase
basketballs. He found 40 basketballs for $300. Coach Cary gave him a coupon
for 45% off. What is his new price and can he purchase the 40 basketballs?
Original:
Discount:
New price:
Helppp me.
sale price: $66.30 percent of discount: 65%
find the regular price
Answer:
$189.43
Step-by-step explanation:
P = regular price
65% as a decimal = [tex]\frac{65}{100}[/tex] = .65
Discount = .65
To get the amount of the discount we would multiply P * .65
To find the sale price we subtract the discount from the original price.
Now we write our equation:
P - P(.65) = $66.30
Solve for P
P - P(.65) = $66.30
1P - P(.65) = $66.30
1P - .65P = $66.30
.35P = 66.30 Divide each side by .35
.35P.35 = 66.30/.35
P = 66.30/.35
P ≈ $189.43
lines M and N are parallel which angle has a measure of 110
a.1
b.2
c.3
d.4
Answer:
B. angle 2
Step-by-step explanation:
Angle 2 is opposite to the 110 degrees, and opposite angles are congruent
Hope this helps :)
Please solve with explanation
Answer:
a) x=-a, x=a+b
b) x=5/2a, x=1/3b
c) x=1/2a, x=a/a-2
Step-by-step explanation:
a) (x-a)(x-a)-b(x+a)=0
(x+a)(x-a-b)=0
x=-a, x=a+b
b) 3x(2x-5a)-b(2x-5a)=0
(2x-5a)(3x-b)=0
x=5/2a, x=1/3b
c) (2a-4)x^2=a^2(x-1)
(2x-a)(ax-2x-a)=0
The figure below has a perimeter of 20 cm. Jinaiya wants to scale this figure by a factor of 0.75
What will the perimeter of the scaled figure be?
Answer:
15cm
Step-by-step explanation:
scale factor =image diatace/object distance
0.75=x/20
0.75×20=x
15=x
: .x=15cm
What would the answer be ?
Angles X and Y are supplementary. Angle X is 3 times the measure of angle Y. What is the measure of angle X?
45°
60°
120°
135°
[tex]x + y = 90[/tex]
[tex]x = 3y[/tex]
[tex]3y + y = 90[/tex]
[tex]4y = 90[/tex]
[tex]y = 15[/tex]
[tex]x = 3(15) = 45[/tex]
Answer:
45 °
Step-by-step explanation:
Knowing that:
Supplementary Angle = 180 °
Angle x is 3 time the measure of angle y.
Solve:
Equation below:
x + y = 180
x = 3y
Substitute
3y + y =180
4y = 180
Divide both sides by 4
4y/4 = 180/4
y = 45
Value of x:
x = 3 × 45
x = 135
Therefore the measure of angle x is 135.
x = 45
y = 135
~Lenvy~
The length of a rectangle is 5m longer than its width.
If the perimeter of the rectangle is 74m, find its length and width.
Step-by-step explanation:
P = 2(L + B ), but L = B + 5. so,
P = 2(B+ 5 + B ), B = 16 & L = 21.
Which conclusion can be drawn from the graph data?
Mexican cities have larger populations than US cities.
The third most-populous city shown on the graph is in Mexico.
The top three most-populous cities shown on the graph are US cities.
The population of New York City is more than double the population of Los Angeles.
Answer:D
Step-by-step explanation:
Answer:
D. The population of New York City is more than double the population of Los Angeles.
When drawing a card, find the probability of drawing a spade or selecting a number less
than five.
Answer:
Therefore, there 16 chances of getting a spade OR a five.
Step-by-step explanation:
how do i write 2y+10x=-4 in slope intercept form
find the value of x
Answer:
116
Step-by-step explanation:
The sum of the measures of the angles of a quadrilateral is 360 degrees, so:
79+55+110+x=360
244+x=360
x=116
8
9
10
TIME REMAINING
14:56
SERE
The National Weather Service keeps track of the temperature for a given day in a given city. It also keeps track of this
information at certain times during a given day. The following temperatures were recorded on a January day in New York
City.
Time of Day
10 AM 12 Noon 2 PM 4 PM 16 PM
SPM 10 PM
Temperature (°F) 30 35 36 36 34 30 28
a.
What is the average rate of change of temperature with respect to time over the evening hours from 6 PM to 10 PM?
Interpret this value in a complete sentence.
6°F degrees per hour; The temperature drops at an average rate of 6 degrees per hour from 6
PM to 10 PM
b. -6°F degrees per hour: The temperature drops at an average rate of 6 degrees per hour from 6
PM to 10 PM
C.
-1.5°F degrees per hour; The temperature drops at an average rate of 1.5 degrees per hour
from 6 PM to 10 PM.
d. 1.5°F degrees per hour; The temperature drops at an average rate of 1.5 degrees per hour from
6 PM to 10 PM
Mark this and return
Save and Exit
Nex
Submit
cript:void(0)
Answer:
D. 0.019 years of age per year
Step-by-step explanation:
If mzBEC = 140°, find mZFEG.
F.
G
CA
A
To
и в
B
O 80
090
50
40
Answer:
50° for angle FEG
Step-by-step explanation:
Following the Verticle Angles Theorem, the angle on the other side of 140 must also be 140. Since it is split up and we know one of them is a right angle, we must subtract 90 from 140.
140 - 90 = 50.
Thus, angle FEG is 50°.
Find the height of the Eiffel Tower.
Answer:
The tower itself is 300 metres (984 feet) high. It rests on a base that is 5 metres (17 feet) high, and a television antenna atop the tower gives it a total elevation of 324 metres (1,063 feet).
What is the value of 3n at n = 11
Answer:
33
Step-by-step explanation:
replace n with 11 and multiply 3x11
what is the equation of the line that passes through (0,2) and has a slope of 0
Answer:
Step-by-step explanation:
The line with the slope 0 is horizontal line, so the equation is
y = 2
Please help 50 points: A ball is thrown straight up, from 3 m above the ground, with a velocity of 14m/s. When does it hit the ground? Use vertical motion formula.
Answer:
3.058s
Step-by-step explanation:
i cant rewrite everything i solve in the paper sorry
Step-by-step explanation:
In this question, to find the total height first, we must also take into consideration the acceleration due to gravity as well. To find the distance by which acceleration due to gravity pulls the ball down must know the Initial velocity.
In the answer key, it says that gravity changes the ball's height by a distance of -5t^2
Is initial velocity in this question 0 or 14m/s? Because if it is 14, then gravity should change the balls position by -(14+5t^2), not -5t^2, because if I remember correctly, the formula for finding distance is vt(initial velocity)+(1/2)at^2 ,and not just (1/2)at^2
exercise 15 b i will mark u as brainlist
15b
10 balls...........200
15 balls.......... = 15x200 : 10 = 300
Rs 300 for 15 balls
Can you help me please
Step-by-step explanation:
4/5x-3=3/10x+7
We move all terms to the left:
4/5x-3-(3/10x+7)=0
Domain of the equation: 5x!=0
x!=0/5
x!=0
x∈R
Domain of the equation: 10x+7)!=0
x∈R
We get rid of parentheses
4/5x-3/10x-7-3=0
We calculate fractions
40x/50x^2+(-15x)/50x^2-7-3=0
We add all the numbers together, and all the variables
40x/50x^2+(-15x)/50x^2-10=0
We multiply all the terms by the denominator
40x+(-15x)-10*50x^2=0
Wy multiply elements
-500x^2+40x+(-15x)=0
We get rid of parentheses
-500x^2+40x-15x=0
We add all the numbers together, and all the variables
-500x^2+25x=0
a = -500; b = 25; c = 0;
Δ = b2-4ac
Δ = 252-4·(-500)·0
Δ = 625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
x1=−b−Δ√2ax2=−b+Δ√2a
Δ−−√=625−−−√=25
x1=−b−Δ√2a=−(25)−252∗−500=−50−1000=1/20
x2=−b+Δ√2a=−(25)+252∗−500=0−1000=0
Help math math math ASAP pass
Answer:
(-1,1)
Step-by-step explanation:
you can solve them simultaneously or by just looking at the point at which the lines are meeting or intersecting
Answer:
(-1,1)
Step-by-step explanation:
Simplify 6 - 23 + (-9 + 5) · 2.
6 - 23 + (-9+5) * 2
-17 + (-4)*2
-17 + (-8)
-17 - 8
-25
Answer:
-25
Step-by-step explanation:
follow the order for pemdas which is (parenthesis,exponent,multiplication/division, and then addition/subtraction)
Help please!!! Algebra 3, Find Tan 0
Answer:
Step-by-step explanation:
scott wants to rent a boat and spend at most $79. The boat costs 8 per hour, and Scott has a discount coupon for $9 off. What are the possible numbers of hours Scott could rent the boat?
Answer:
11 hours
Step-by-step explanation:
Using the $79 dollars, Scott can get up to 9 hours with the boat. Scott will be left with $7, adding the $7 to the $9 coupon, Scott will then have $16 which can give Scott an additional 2 hours summing the total hours up to 11 hours Scott can rent the boat for.