-3 | 9-8=1 | (-3, 1)
-2 | 4-8= -4 | (-2, -4)
-1 | 1-8=-7 | (-1, -7)
0. | 0-8=-8 | (0, -8)
1 | 1-8=-7 | (1, -7)
The point I (–4, –1) is rotated 90 about the origin. What is the image of I?
9514 1404 393
Answer:
I'(1, -4)
Step-by-step explanation:
The transformation for rotation 90° about the origin is ...
(x, y) ⇒ (-y, x)
I(-4, -1) ⇒ I'(1, -4)
A computer is priced at $1575, but is on sale for 15% off. What is the price of the computer
after the discount and 7.5% sales tax?
Answer:
$1439.16
Step-by-step explanation:
1.) 15% of 1575
1575 x 0.15 = 236.25
1575 - 236.25 = 1338.75
So 15% of $1575 = $1338.75
2.) $1338.75 with sales tax if 7.5%
1338.75 x 0.075 = 100.40625 rounded to the nearest hundredths place is 100.41
1338.75 + 100.41 = 1439.16
so you answer is $1439.16
A circular pool has a diameter of 24 feet. what is the area of the pool to the nearest tenth of a square foot ?
Answer:
37.7
Step-by-step explanation:
First you would need to find the radius by dividing 24 by 2 which is 12. Then multiply the radius by pie (3.14) and the answer should be 37.68 rounded to the nearest tenth, 37.7.
QUESTION 10 of 10: You learn that you can buy a used robot for $25,000. The robot can replace two people doing assembly work that are
paid $19 per hour. About how long would it take for the robot to pay for itself in labor savings?
0000
O a) 640 hours
b) 658 hours
c) 712 hours
d) 755 hours
Answer:
B. 658 Hours
Step-by-step explanation:
All you do is divide.
$19 for every hour, it's 2 persons so,
$38 for every hour.
so,
25,000/38
= 657.894736842 which is about 658 so,
= 658 Hours
It would take 658 hours for the robot to pay for itself in labor savings
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The robot can replace two people doing assembly work that are paid $19 per hour.
Let us assume it would take x hours for the robot to pay for itself in labor savings
(19 + 19)x = 25000
38x = 25000
x = 657.9
It would take 658 hours for the robot to pay for itself in labor savings
Find out more on equation at: https://brainly.com/question/2972832
the standard iq test is designed so that the mean is 100 and the standard deviation is 15 for the population of all adults. We wish to find the sample size necessary to estimate the mean IQ score of statistics students. Suppose we want to be 90% confident that our sample mean is within 2 IQ points of the true mean. Assume then that
Answer:
A sample of 153 is needed.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.9}{2} = 0.05[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.05 = 0.95[/tex], so Z = 1.645.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
Standard deviation is 15 for the population of all adults.
This means that [tex]\sigma = 15[/tex]
We wish to find the sample size necessary to estimate the mean IQ score of statistics students. Suppose we want to be 90% confident that our sample mean is within 2 IQ points of the true mean.
This means that a sample of n is needed.
n is found when M = 2. So
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]2 = 1.645\frac{15}{\sqrt{n}}[/tex]
[tex]2\sqrt{n} = 1.645*15[/tex]
Simplifying both sides by 2
[tex]\sqrt{n} = 1.645*7.5[/tex]
[tex](\sqrt{n})^2 = (1.645*7.5)^2[/tex]
[tex]n = 152.2[/tex]
Rounding up:
A sample of 153 is needed.
WHO CAN solve it Please !
Answer:
a) True
[tex]\int\limits^\pi _ {0} \,(\sqrt{1-sin^{2}\alpha } )d\alpha =0[/tex]
Step-by-step explanation:
Step(i):-
Given that the definite integration
[tex]\int\limits^\pi _ {0} \,(\sqrt{1-sin^{2}\alpha } )d\alpha[/tex]
we know that the trigonometric formula
sin²∝+cos²∝ = 1
cos²∝ = 1-sin²∝
step(ii):-
Now the integration
[tex]\int\limits^\pi _ {0} \,(\sqrt{1-sin^{2}\alpha } )d\alpha = \int\limits^\pi _0 {(\sqrt{cos^{2} \alpha } } \, )d\alpha[/tex]
= [tex]\int\limits^\pi _0 {cos\alpha } \, dx[/tex]
Now, Integrating
[tex]= ( sin\alpha )_{0} ^{\pi }[/tex]
= sin π - sin 0
= 0-0
= 0
Final answer:-
[tex]\int\limits^\pi _ {0} \,(\sqrt{1-sin^{2}\alpha } )d\alpha =0[/tex]
There is a bag of marbles that contain 5 blues, 6 red, 3 black, and 2 yellow marbles. What is the probability that you select a blue marble
Answer:
[tex]\frac{5}{16}[/tex]
Step-by-step explanation:
1) Find the total number of marbles
5 blue + 6 red + 3 black + 2 yellow
= 16 marbles
2) To find the probability of selecting a blue marble, divide the number of blue marbles by the number of total marbles:
5 blue marbles ÷16 marbles
[tex]= \frac{5}{16}[/tex]
Therefore, the probability of selecting a blue marble is [tex]\frac{5}{16}[/tex].
I hope this helps!
5 rubber stamps cost $9.70.
Which equation would help determine the cost of 11 rubber stamps?
A: x/11 = 5/9.70
B: 11\$9.70 = x/5
C: 5/11 = x/9.70
D: 11/5 = 9.70/x
E: None of the above
Dos puntos en matematicas
Answer:
eso no es una pregunta
Step-by-step explanation:
Find the surface area of the prism. 5cm 7cm 4cm
The slope of the line below is 3. Write the point-slope equation for the line
using the coordinates of the labeled point. (6’8)
Answer:
y - 8 = 3(x - 6)
Step-by-step explanation:
Point slope-equation formula:
y - y1 = m(x - x1)
y - 8 = 3(x - 6)
PLEASE HELP !! ILL GIVE BRAINLIEST !!
Answer:
∠EFC and ∠DCF
∠BCF and ∠GFC
Step-by-step explanation:
use a long method division to calculate 145 413 by 321
Answer:
i dont know because you have not really explained it
Step-by-step explanation:
The quotient of the division of 145413 by 321 is 453.
What is Division?Division is one of the operation in mathematics where number is divideD into equal parts as that of a definite number.
We are using long division method here.
For that dividend is 145413 and divisor is 321.
First take the first some digits of dividend which is greater than 321.
That is the first four digits, 1454.
The multiple of 321 closest to 1454 is 1284 which is equal to 4 × 321
So the first digit of quotient is 4.
1454 - 1284 = 170
Now 170 is less than 321.
Add the next digit of the dividend to 170.
It becomes 1701.
Multiple of 321 closest to 1701 is 1605 which is equal to 5 × 321.
The next digit of the quotient is 5.
1701 - 1605 = 96
Again since 96 less than 321, take the next digit of the dividend and the number becomes 963.
Now 963 is a multiple of 321, where 963 = 3 × 321
So the next digit of the quotient is 3.
Quotient = 453
Hence the quotient of the given division is 453.
Learn more about Division here :
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#SPJ2
Work it out fast its a timed test
Answer:
$1400
Step-by-step explanation:
Answer:
$1,400.00
Step-by-step explanation:
You have to multiply $8.75 by the 20 hours to get $175, then you multiply that by 8 weeks to get $1,400
What is the median of the numbers 63,5,0,0,45,2,23,16
Answer:
10.5
Step-by-step explanation:
63,5,0,0,45,2,23,16
order from smallest to greatest
0, 0, 2, 5, 16, 23, 45, 63
median = center number
(5 + 16) / 2 =10.5
Camden invested $260 in an account paying an interest rate of 4 1/8% compounded annually. Evan invested $260 in an account paying an interest rate of 3 7/8% compounded continuously. After 13 years, how much more money would Camden have in his account than Evan, to the nearest dollar ?
Answer:
$9
Step-by-step explanation
got it wrong so many times so delta math gave me the answer
Thank you in advance
Answer:
<z = 37
Step-by-step explanation:
<x = 90
<y = 53
<z = ?
<x + <y + <z = 180
90 + 53 + <z = 180
143 + <z = 180
<z = 180 - 143
<z = 37
Answer:
37
Step-by-step explanation:
180-90-53= 37
Jeremiah has a bag with 5 red marbles 8 yellow marbles 4 blue marbles and 3 green marbles what is the probability as a percent that he will not pick a green marble
Answer:
85%
Step-by-step explanation:
P(not green) = 17/20 which equals 85%
An object is spinning around a circle at a rate of 420 revolutions per minute. If the circle has a diameter of 8 feet, what is its angular speed in degrees per minute. Do not add the units into your answer.
Answer:
Step-by-step explanation:
This seems more like a physics questions, but i'll help you :P
the circle is 8 feet across or a radius of 4 feet
circumference of the circle is 2[tex]\pi[/tex]r = 25.132741 feet
it's going around 420 times a minute
420 * 25.132741 = 10555.75132 feet per minute
10,555.75
plz help will give crown
D 8m = 48
divide by 8 both sides so we can isolate m
answer
m= 6
Ms. DeVoto and Mr. Kim share a birthday, but Mr. Kim is 7 years older. If Ms. DeVoto is D years old, write an expression to show how old Mr. Kim is.
Answer:
D+7=K
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
26.5 multiplied by 0.38
Answer:
10.07
Step-by-step explanation:
26.5 x 0.38 = 10.07
Can I get brainliest
The sum of N and the product 5 times n is 24. What is the value of n?
Answer: n = 4
Step-by-step explanation:
We will first write a mathematical equation to represent the situation. Then, we will solve it.
The sum of n → Sum means addition, so "n +"
product of 5 times n → Product and times means multiplication, so "5n"
is 24 → Is represents equals, so "= 24"
The sum of N and the product 5 times n is 24 → n + 5n = 24
Now that we have our equation, we can solve. We will do this by adding n and 5n, then dividing both sides of the equation by 6.
n + 5n = 24
6n = 24
n = 4
Cómo se formaron los conjuntos numéricos?
Answer:
Step-by-step explanation:
Los conjuntos numéricos son agrupaciones de números que guardan una serie de propiedades estructurales. Por ejemplo el sistema más usual en aritmética natural está formado por el conjunto de los números naturales, con la suma, la multiplicación y las relaciones usuales de orden aditivo.
Which of the following names of geometric objects does The order of letters not matter
9514 1404 393
Answer:
B. line AB
Step-by-step explanation:
The terminal point must be named first when naming a ray.
The vertex must be named in the middle when naming an angle.
The order of points does not matter when naming a line.
A king size candy bars costs $1 with each candy bar having 1,472 calories. If you bought 7 candy bars and took 8 days eating them (eating the same amount each day) how many calories would you consume a day?
Answer: your mom gay ;)
Step-by-step explanation:
4,500 calories a day
If you ate the same amount each day, that means you would eat 3 a day, since 6 divided by 2 is 3.
Find how many calories you would eat each day by multiplying 3 by 1,500
3(1,500)
= 4500
Of segments CDF and CED, which of the segments has a greater area based on the given information? Justify with your work.(Do not use sin)
Circle A has radius 10m and m angle CAD=90 degrees
Circle B has radius 12m and m angle CBD=60degrees
Answer:
Segment CED has greater areaStep-by-step explanation:
Circle AArea of ΔCAD, right triangle:
A = 1/2*10*10 = 50 m²Area of the sector CAD:
A = 1/4*π*10² = 78.54 m²Area of segment CED:
A = 78.54 - 50 = 28.54 m²Circle BArea of ΔCBD, equilateral triangle:
A = √3/4*12² = 62.36 m²Area of sector CBD:
A = 1/6*π*12² = 75.40 m²Area of segment CFD:
A = 75.40 - 62.36 = 13.04 m²Compare the areas of the segments:
CED = 28.54 > CFD = 13.04Answer:
for 1 st
area of segment CAD=90/360×π×10²=78.54m²
for second
area of segmentBCD=60/360×π×12²=75.4m²
so
CAD has greater area
Find the area of the figure.
Answer:
24
Step-by-step explanation:
Split the polygon into three triangles and a square, then find the areas of each and they add up to 24.
Answer:
let me know if it's the right answer or not:) also I learned this awhile
Which is the graph of linear inequality x + 2y <= 12
Answer:
B
Step-by-step explanation:
i got a 95% so i thinks its right
The sum of two numbers is 90. The difference of the two numbers is 34. What are the two numbers.
Answer:
part a: 45
part b: 102 and 68
Step-by-step explanation: