Answers
Answer:
The last one
Step-by-step explanation:
Related Questions
On a test that has a normal distribution, a score of 60 falls two standard deviations above the mean, and a score of 42 falls one standard deviation below the mean. Determine the mean of this test
Answers
Answer:
48
Step-by-step explanation:
Given that:
[tex]A \ score \ of \ 60 \ falls \ two \ standard \ deviations \ above \ the \ mean \\ \\ A \ score \ of \ 42 \ falls \ one \ standard \ deviation \ below \ the \ m ean[/tex]
The interval for score = 60 - 42 = 18
If we divide it by the 3 standard deviations; the interval result into
= 18/3
= 6
So, the standard deviation is 6, and the mean = 42 + 6
= 48
Answer:
51
Step-by-step explanation:
Urgent please help, will give brainliest
Answers
in right angle traingle two angle are equal
so.x=y
in triangle
x+y+90=180(sum of interior angle of triangle)
2x=180-90
x=90/3=45°
To determine the height of the volcano Mount Saint Helens, a surveyor measured the angle of elevation to the top of the volcano to be 34.8°. She then moved 1000 feet closer to the volcano and measured the angle of elevation to be 40.4° Determine the height of Mount Saint Helens to the nearest foot.
Answers
Answer:
The height is 3791 ft.
Step-by-step explanation:
You need to make a drawing. Start with a vertical segment, 2 inches long, on the left side of the page. Label the top point A and the bottom point B. At the bottom endpoint, draw a longer horizontal segment, 4 inches long, to the right. Label the bottom right endpoint C. Connect A and C with a segment. Angle C is the original angle of elevation. On the bottom horizontal side, approximately 1 inch to the left of C, draw point D. Connect D and A with a segment. DA = 1000 ft. m<C = 34.8°. m<ABD = 40.4°. We are looking for AB, the height of the volcano.
We can work on triangle ADC.
m<C = 34.8°
Angles ADB and ADC are a linear pair, so m<ADC = 180° - 40.4° = 139.6°
m<DAC + m<ADC + m<C = 180°
m<DAC + 139.6° + 34.8° = 180°
m<DAC = 5.6°
Using the law of sines, we can find AC.
[tex] \dfrac{\sin A}{a} = \dfrac{\sin B}{b} [/tex]
[tex]\dfrac{\sin 5.6^\circ}{1000} = \dfrac{\sin 139.6^\circ}{AC}[/tex]
[tex]AC = \dfrac{1000\sin 139.6^\circ}{\sin 5.6^\circ}[/tex]
[tex] AC = 6642~ft [/tex]
Now we use triangle ABC. AC = hypotenuse. AB = opposite leg. <C is known angle.
[tex] \sin C = \dfrac{opp}{hyp} [/tex]
[tex]\sin 34.8^\circ = \dfrac{AB}{6642~ft}[/tex]
[tex]AB = 6642~ft \times \sin 34.8^\circ[/tex]
[tex] AB = 3791~ft [/tex]
Answer: The height is 3791 ft.
Can y’all help me with dis question
Answers
Pretty sure is A or D.
Darla can do a job in eight hours while Lonnie can do the same job in six hours. Both Darla and Lonnie work three hours on the job. How much of the job is left to be finished
Answers
Answer:
Look below ⏬
Step-by-step explanation:
Darla 8h
Lonnie 6h
They both worked 3 hours now
subtract
8-3=5
6-3=3
Darla have 5 hours to finish
and...
Lonnie has 3 hours to finish
all together is 8 hours in all
1/8 part of the job is left to be finished if both Darla and Lonnie works for three hours on the job.
What is Fractions?Fractions are the part or portion of a whole.
For example, fraction 1/2 means 1 part of the 2.
Time taken by Darla to do the job = 8 hours
Time taken by Lonnie to do the job = 6 hours
Let J represent the job.
In 8 hours, Darla completes J.
In 3 hours, Darla completes 3/8 J
In 6 hours Lonnie completes J.
In 3 hours, Lonnie completes 3/6 J.
The work completed = 3/8 J + 3/6 J
= J [ 3/8 + 3/6]
= J [3/8 + 1/2]
= 7/8 J
7/8 parts of the job is completed.
Job left to finished = J - 7/8 J = 1/8 J
Hence 1/8 part of the job is left to be finished.
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Find the measure of the exterior angle
Answers
Answer:
138
Step-by-step explanation:
5x+2+6x+90=180
11x+92=180
11x=88
x=8
5(8)+2. = 42
180-42= 138
A cube has a side length of s meters. The volume of the cube is
represented by the expression s^3. The volume of the cube is a function
of the side length. Does this situation represent a linear or nonlinear
function? Explain.
Answers
Answer:
non linear
Step-by-step explanation:
This situation can be represented as y=x^3 where y is the volume of the cube x is the length of its side. We find that the slope for this curve(change in y/change in x) is not constant for all points on the curve. Thus it is a non linear function.
The number of blocks has 9 in the ones place. The numberin the hundreds place i is one more that the numberin the tens place. Those two numbers equal 11. How many block are there?
Answers
Answer:
There are 659 blocks
Step-by-step explanation:
The number of blocks has 9 in the ones place.
The number in the hundreds place is one more that the number in the tens place.
Let the number in the tens place is x.
Number in the hundreds place = 1+x
These two numbers equal 11.
ATQ,
x+1+x = 11
2x + 1 = 11
2x = 10
x = 5
No in the tens place = 5
No. in the hundreds place = 1+5 = 6
Hebnce, the number is 659.
Solve the equation using the multiplication property of equality and the reciprocal of 1 4 . 1 4 ( r − 5 2 ) = 1 8 What is r? r = one-third r = 3 r = two-thirds r = one-half
Answers
Answer:
3
Step-by-step explanation:
1/4(r - 5/2) = 1/8
1/4r - 5/8 = 1/8
1/4r = 1/8 + 5/8
1/4r = 6/8
Divide both sides by 1/4
1/4r ÷ 1/4 = 6/8 ÷ 1/4
1/4r * 4/1 = 6/8 * 4/1
r = 24/8
r = 3
Answer:
3
Step-by-step explanation:
I did it
Name the line of reflection.
Answers
Answer:
y=0
Step-by-step explanation:
What professions did Nathan Hale and his brother pursue? A. farmer and teacher B. teacher and minister C. doctor and lawyer D. farmer and soldier
Answers
Answer:
B. teacher and minister
Step-by-step explanation:
Nathan Hale and Enoch Hale were two brothers who went to Yale College to complete their further studies. Among them, Nathan decided to become a school teacher and Enoch wanted to become a minister. Nathan promoted equal opportunities for the women in terms of education. He is known for his sacrifice that he made for his country. Among the colonists, he became a hero because of his thoughts for his country. He was hanged on the order of British commander, General Thomas Howe. Nathan was considered as a spy and was immediately hanged till death.
henry works at a retail store and is eligible for 18 days leave for a year. How many days of leave is he entitled to for 9 months of work?
Answers
Solve for x and y. 30-60-90 triangles
Answers
Answer:
[tex]x = 3[/tex][tex]y=3\sqrt{3}[/tex]Step-by-step explanation:
From the given right-angle triangle
The angle = ∠60°
The adjacent to the angle ∠60° is x.The opposite to the angle ∠60° is y.The hypotenuse = 6
Using the trigonometric ratio
cos 60° = adjacent / hypotenuse
substituting adjacent = x and hypotenuse = 6
cos 60° = x / 6
6 × cos 60° = x
x = 3
Thus, the value of x is:
x = 3And using the trigonometric ratio
sin 60° = opposite / hypotenuse
substituting opposite = y and hypotenuse = 6
[tex]sin\:60^{\circ }\:=\:\frac{y}{6}\:[/tex]
[tex]y=6\:\times\:sin\:60^{\circ }[/tex]
[tex]=6\times \frac{\sqrt{3}}{2}[/tex] ∵ [tex]\sin \left(60^{\circ \:}\right)=\frac{\sqrt{3}}{2}[/tex]
[tex]=3\sqrt{3}[/tex]
Therefore, the value of y is:
[tex]y=3\sqrt{3}[/tex]Summary:
[tex]x = 3[/tex][tex]y=3\sqrt{3}[/tex]Last week Mr. Wilson spent $125 on groceries. This week his spending increased by 25%. How much did he spend on groceries this week?
Answers
Answer:
$156.25
Step-by-step explanation:
$125. × 25% = $31.25
$125.00+$31.25=$156.26
Answer:
156.25
Step-by-step explanation:
(125*0.25)+125=x=156.25
On one day four gardeners and four helpers earned 360 dollars. On another day working the same number of hours and at the same rate of pay , five gardeners and six helpers earned 480 dollars how much does a gardener and how much does a helper earn each day?
Answers
They get paid 60 dollars per
Find the answer in simplest form.
33/4 divided by 17/6=
Answers
Answer:
99/34 i believe
Step-by-step explanation:
Which is the equation of the parabola
Answers
Answer:
its the first one
Step-by-step explanation:
The elevation of a city is positive if the city is above sea level and negative if below sea level. The elevation of New Orleans is -0.3 \text{ m}−0.3 mminus, 0, point, 3, start text, space, m, end text. What does an elevation of -0.3 \text{ m}−0.3 mminus, 0, point, 3, start text, space, m, end text represent in this situation? Choose 1 answer: Choose 1 answer: (Choice A) A New Orleans is 0.3 \text{ m}0.3 m0, point, 3, start text, space, m, end text above sea level. (Choice B) B New Orleans is at sea level. (Choice C) C New Orleans is 0.3 \text{ m}0.3 m0, point, 3, start text, space, m, end text below sea level.
Answers
Answer:
Yes
Step-by-step explanation:
Answer:
the anwser is below sea level
Step-by-step explanation:
which coordinate grid shows the graph of y=x-2
Answers
A customer wants to purchase a sweater from a store.
The original price of the sweater is $40.
The sweater is on sale for 20% off the original price.
A sales tax of 5% is applied after the discount.
What was the final price of the sweater?
A
$34.00
B
$30.00
C
$30.40
D
$33.60
will give brainliest! hurry please!! im timed!
Answers
Answer:
a
Step-by-step explanation:
Answer:
Step-by-step explanation:
C
40*.20=8
40-8=32
32*.05=1.60
32-1.60=30.4
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The table below relates the number of gallons to number of quarts.
1. Describe the relationship between gallons and quarts.
2. Is the given table proportional. if it is, what is the constant of proportionality for this relationship?
Answers
Step-by-step explanation:
1. The relationship between the galloon and quarts is that the galloons are being x4 each time. (example; 5x4 = 20, 4x3 = 12, etc...)
2. 4 quarts per gallon
Henry is flying a kite. The kite makes an angle of 43 with the ground. If henry is standing 100 feet from a point on the ground directly below the kite, find the length of the kite string
Answers
Answer:
x = 136.73 feet
Step-by-step explanation:
Given that,
Henry is flying a kite. The kite makes an angle of 43 with the ground. If henry is standing 100 feet from a point on the ground directly below the kite.
We need to find the length of the kite string. It can be calculated by using trigonometry.
The length of the string will be hypotenuse, 100 feet is the base.
The relation between the hypotenuse, base and angle with the ground is given by :
[tex]\cos\theta=\dfrac{\text{base}}{\text{Hypotenuse}}\\\\\cos(43)=\dfrac{100}{x}\\\\x=\dfrac{100}{\cos(43)}\\\\x=136.73\ \text{feet}[/tex]
So, the length of the kite string is 136.73 feet.
Find the 40th term in each arithmetic sequence.
1. 4, 8, 12, 16, ...
2. 13, 26, 39, 52, ...
3. 6, 12, 18, 24, ...
Answers
The point(0, 0) is a solution to which inequality?*
O y-9<3x - 10
Oy - 9> 3x + 10
O y-9> 3x - 10
O y + 9 > 3x + 10
Answers
1 x 0.0016 -
helppppppp!have a good day:)
Answers
Answer:
= 0.0016
Step-by-step explanation:
anything times one is the same number
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Answers
(06.03)
Rachel can make 3 bracelets in an hour. Oliver can make only 2 bracelets in an hour, but he already has 5 completed bracelets. Explain to Rachel how she can use a system of equations to determine when she will have the same number of bracelets as Oliver. Use complete sentences.
Answers
Answer:
I just need popints
Step-by-step explanation:
I just need points
Answer: R=3 Bracelets per HR
O=2 Bracelets per HR
Step-by-step explanation: She can go faster
⚠️15 points⚠️
The table shows the linear relationship between the balance of a student's savings account and the number of weeks he has been saving.
Based on the table, what was the rate of change of the balance of the student's savings account in dollars and cents per week?
Answers
Answer:
the rate of change is 7.
Step-by-step explanation:
The rate of change of the balance of the student's savings account in dollars and cents per week is 7.
How to measure the rate of change of something as some other value changes?Suppose that we have to measure the rate of change of y as x changes, then we have:
[tex]Rate = \dfrac{y_2 - y_1}{x_2 - x_1}[/tex]
Remember that, we have to divide by the change in an independent variable so that we get an idea of how much the dependent quantity changes as we change the independent quantity by 1 unit.
We have given the table of saving accounts, then the rate will be;
[tex]Rate = \dfrac{39 - 32}{1 - 0}\\Rate = \dfrac{7}{1 }[/tex]
Therefore, the rate of change of the balance of the student's savings accounts in dollars and cents per week is 7.
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if a lady chargers $2.00 for gas and $3.00 per 1/2 hour of work . What is the amount of money she makes in 4 hours ?
Answers
Answer:
$32
Step-by-step explanation:
The lady charges $2.00 for gas which means over a 4 hour period we would do
4 x 2 = 8
She makes a total of 8 dollars
She also gains $3.00 per half hour of work
This means we would do 3 x 8
24
We add these values to get $32
Answer:
22 dollars maybe
Step-by-step explanation:
math
Please help me, 30 points and Brainlest.
The red figure is congruent to the blue figure. Describe a sequence of rigid motions between the figures.
Answers
Answer:
Reflection
Step-by-step explanation:
