Answer:
7x + 2
Step-by-step explanation:
For the phrase given:
Two more than seven times Lindsay's age.
x = Lindsay's age
Two more than means that you will add 2,
...more than seven times Linday's age means you will multiply the variable by 7
7x + 2
Members of the Video Digital club produce short videos. At the end
of each school year, the club hosts a Video Digital festival at a local
theater to show the community its top 25 videos.
Part A:
The club has realized from experience that when they don't charge
for admission, 800 people come. For every dollar they charge for
admission, 8 fewer people come. Write an inequality that they can
use to determine the price, p, in dollars that the club must charge for
at least 750 to come to the video festival
Lo
Answer:
Step-by-step explanation:
800-8p<750
A certain process for manufacturing integrated circuits has been in use for a period of time, and it is known that 12% of the circuits it produces are defective. A new process that is supposed to reduce the proportion of defectives is being tested. In a simple random sample of 100 circuits produced by the new process, 11 were defective.
a. If the proportion of defectives in the sample is less than 12%, it is reasonable to conclude that the new process is better.
1. True
2. False
b. If the proportion of defectives in the sample is only slightly less than 12%, the difference could be due entirely to sampling variation, and it's not reasonable to conclude that the new process is better.
1. True
2. False
c. If the proportion of defectives in the sample is a lot less than 12%, it is very unlikely that the difference is due entirely to sampling variation, so it is reasonable to conclude that the new process is better.
1. True
2. False
Answer:
a. If the proportion of defectives in the sample is only slightly less than 12%, the difference could be due entirely to sampling variation, and it's not reasonable to conclude that the new process is better
b. True
c. True
Step-by-step explanation:
a. The percentage of defective circuits produced = 12%
Given that the percentage of defective circuits produced in the new process is 11% which is only slightly less than the observed 12%, the difference may be due to variation in the sample, as another sample of 100 in the new process cold produce more than 11 defective circuits
b. True. In every sample, there is a slight variation which can account for the difference
c. Given that the defectives in the sample is considerably less than 12%, then it would be more statistically evident that there is a difference in the two processes and the new process can be considered reasonably better
Therefore, the answer is; True
find the circumference and the area of each circle to the nearest hundreth
Answer:
[tex]C[/tex] ≈ [tex]18,84[/tex] and [tex]A[/tex] ≈ [tex]28,26[/tex]
Step-by-step explanation:
[tex]C = 2r\pi[/tex] [tex]A = r^{2}\pi[/tex]
[tex]C = 2*3*\pi[/tex] [tex]A = 3^{2} \pi[/tex]
[tex]C = 6\pi[/tex] [tex]A = 9\pi[/tex]
[tex]C[/tex] ≈ [tex]18,84[/tex] [tex]A[/tex] ≈ [tex]28,26[/tex]
your answer.
If x=-3 and y=-4, then xy - 2x =
-6
6
18
24
Answer:
18
Step-by-step explanation:
xy = -3 x -4 = - 12
2x = -3 x 2 = -6
-12 - 6 = 18 (2 negatives make a positive)
What is the decimal equivalent for 3/10?
Answer:
3/10 = 0.3
~hope this has helped you out, have a gr8 day my friend! :-) ~
Step-by-step explanation:
Can somebody solve this question for me it would be so helpful I will give brainliest first it needs to be rounded to the nearest 10th
Answer:
F. 824.8 ft³
Step-by-step explanation:
To find the volume of a cube, you want to multiply the length by width by height.
l = 8.2
w = 9.4
h = 10.7
l • w • h
8.2 • 9.4 • 10.7
= 824.756
Round to the nearest tenth.
824.8 ft³
Hope this helps!
A woman had $200. She went to a meatshop,
a bookstore and a drugstore. She spent four
times as much money at the meatshop as she
did at the drugstore. She spent $15 less at the
bookstore than at the drugstore. She then had
$5 left.
Sean traded 1/7 of his baseball cards. What percentage of his baseball cards did Sean trade?
Answer:
Step-by-step explanation:
14%
A local school is holding a fundraising event. Everyone that attends receives a raffle ticket. At the end of the night the raffle is held.
Assume 1,000 people attend the event, and hence there are 1,000 tickets in the raffle.
There will be
• 85 tickets that each win $10
• 60 tickets that each win $20
• 20 tickets that each win $50
• 10 tickets that each win $100
• and the rest of the tickets win nothing
What is the variance of the winnings from this raffle?
Do not round until you have your answer. Round your answer to 2 decimal places.
I need help plz I can’t cuaet well understand it
Answer:
so basically all u have to do is multiply the length, width, and height.
that's literally it to find the volume of this
so the answer would be 37 1/8 I think
hope this helped
solve -4(x+2)-2x+4 plzzzzzzzzzzzzzzzzzzzz
Answer:
-6x-4
Step-by-step explanation:
Answer:
-6x-4
Step-by-step explanation:
a stadium has 10508 VIP boxes the stadium is divided into 12 equal section 2 Premium sections on 10th and second a seat at the premium session cost 48 per game at the Saunders section cost 27 per game how many seats are there in each section
Recall the Akaike information Criterion (AIC) as well as the related Bayesian Information Criterion (BIC) from our study of Variable Selection and Model Building. Without heavy mathematical notation, explain how both the AIC and BIC emphasize goodness-of-fit of a regression model while also controlling model complexity. Why would we wish to do this (that is, to promote goodness-of-it while at the same time controlling model complexity)
Step-by-step explanation:
To check out how efficient or accurate a model is, we use the akaike information criterion or the Bayesian. If the AIC or BIC are lower, then this model would be better. They are also used to control for model complexity
Akaike information criterion = 2k-2ln where k is the number of parameter. A higher k gives a higher AIC.
In the real world complex models are discouraged and avoided since
1. They cause data to be over fitted and can capture noise and information from this data.
2. They are complex and therefore difficult to interpret
3. They consume a lot of time and computing them has several inefficiencies.
Using these two as measure of performance, we can select optimal choice of independent variable.
With forward/backward regression, we are able to put new variables in the model or remove from it. The best is the one with lowest AIC.
Finley's pumpkin had a mass of 6.5 kilograms (kg) before he carved it. After carving it, the pumpkin had a mass of 3.9 kg
Answer:
[tex]\%Change = -40\%[/tex]
Step-by-step explanation:
Given
[tex]Initial = 6.5kg[/tex]
[tex]Final = 3.9kg[/tex]
Required
Determine the percentage change --- Missing from the question
This is calculated as
[tex]\%Change = \frac{Final - Initial}{Initial} * 100\%[/tex]
[tex]\%Change = \frac{3.9kg - 6.5kg}{6.5kg} * 100\%[/tex]
[tex]\%Change = \frac{-2.6kg}{6.5kg} * 100\%[/tex]
[tex]\%Change = \frac{-260}{6.5}\%[/tex]
[tex]\%Change = -40\%[/tex]
I need this for a big test grade help due by tommrow night.
Answer:
s
Step-by-step explanation:
Answer:
point S
Step-by-step explanation:
-3/2: 1.5
1.) The sum of x and 10.
Answer:
10 + x
Step-by-step explanation:
Answer. x+10
Step-by-step explanation:
If computers sell for $1020 per unit and hard drives sell for $118 per unit, the revenue from x computers and y hard drives can be represented by
Answer:
Revenue = 1020x + 118y
Step-by-step explanation:
Revenue = 1020x + 118y
This is an important question to understand. You will use it very shortly when you try and solve 2 equations with 2 unknown. Just to show you what that means, Suppose the revenue is
Revenue = 5808
and 11 items total were sold
x + y = 11 Total number of items sold
1020x + 118y= 5808 Revenue
is the kind of problem you will be solving.
Step-by-step explanation:
a computer sell for $1020
x computer will sell for $1020x
a hard drive sell for $118
y hard drive will sell for $118y
The revenue equals $1020x + $118y
If 15-6/3b =10, then b=
Answer:
b = 2/5 = 0.4
Step-by-step explanation:
We know that:
[tex]15 - \frac{6}{3*b} = 10[/tex]
We want to find the value of b, then we need to isolate b in one side of the equation.
First, let's subtract 15 in both sides of the equation so we get:
[tex]- \frac{6}{3*b} = 10 - 15 = -5[/tex]
Now we can multiply both sides by 3*b, so we get:
[tex]- 6 = -5*3*b = -15*b[/tex]
Now we can divide both sides by -15:
[tex]-6/-15 = b[/tex]
Then:
b = 6/15 = 2/5
b = 2/5 = 0.4
Write an expression equivalent to b+b+b+b+bt
4b + bt =
Hope that helps!
How many square feet of carpet are needed to cover the room shown in the figure below?
Answer:
190 square feet.
Step-by-step explanation:
Okay, let's break it down. There are a few ways to solve this, but i found that this was the easiest.
Multiply the area of a normal rectangle, 10ft and 25ft. We are left with 250. Now, as there are two major chunks, you can subtract the 4ft left over from the 10ft in all, giving us 6ft in length. Multiply the sides of the chunks (six feet) by the top portion (five feet), leaving us with 30. Since there are two chunks, multiply by two. We take the 60 feet and subtract it from the 250, leaving us with 190.
Hope this helps!
Answer:
190 sqft
Step-by-step explanation:
Okay, let's break it down. There are a few ways to solve this, but i found that this was the easiest.
Multiply the area of a normal rectangle, 10ft and 25ft. We are left with 250. Now, as there are two major chunks, you can subtract the 4ft left over from the 10ft in all, giving us 6ft in length. Multiply the sides of the chunks (six feet) by the top portion (five feet), leaving us with 30. Since there are two chunks, multiply by two. We take the 60 feet and subtract it from the 250, leaving us with 190.
This should help!
find the degrees of the marked angle
Answer:
n=82
m=98
e=98
Step-by-step explanation:
n is vertical to 82
180-82=m and e because they are suplementery angles
Answer:
∠n = 82°
∠m = 98°
∠n = 98°
Step-by-step explanation:
∠n = 82° because it is alternate to 82°
total circle = 360°
∠l =∠m
2∠m = 360° - 82° - 82° = 196°
∠m = 98°
∠n = 98°
The formula for the area of a triangle is A= hb/2
A triangle has A = 24 units squared and b = 12 units. What is the
height, h?
Randall enjoys canoeing. The time it takes for his canoe to go 3 miles upstream and back 3 miles downstream in a lake is 4 hours. The current of the lake is 1 miles per hour. Which equation can Randall use to determine the average speed of the canoe in still water?
The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
SpeedSpeed is the ratio of total distance travelled to total time taken. It is given by:
Speed = distance / time
Let t₁ represent the time upstream and t₂ the time downstream while a represent the average speed of the canoe in still water.
Hence:
t₁ + t₂ = 4 (1)
Also:
(a - 1)t₁ = 3 (2)
(a + 1)t₂ = 3 (3)
The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
Find out more on speed at: https://brainly.com/question/4931057
The width of a rectangle is the length minus 7 units. The area of the
rectangle is 8 units. What is the length, in units, of the rectangle?
Answer:
8 units
Step-by-step explanation:
here's your solution
=> let the length of rectangle be X
=> then width = x - 7
=> area = 8units
=>> area = length*width
=> area = x (x-7) = 8
=> x^2 - 7 = 8
=> now, x^2 - 7x - 8 = 0
=> factories the above equation by middle term split
=> x^2 - 7x - 8
=> x^2 - 8x + x - 8
=> take the common
=> x(x - 8) + 1(x - 8)
=> (x + 1) (x - 8)
neglect (x + 1) because this will in negative for X
=> x - 8 = 0
=> x = 8
=>so, x = 8
=>length = 8 units
If f(x)= 11 when f(x) = 5x-17, find x.
(Type an exact answer, using radicals as needed.)
Answer:
x = 28/5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
FunctionsFunction NotationStep-by-step explanation:
Step 1: Define
f(x) = 5x - 17
f(x) = 11
Step 2: Solve for x
Substitute in f(x) [Function]: 11 = 5x - 17[Addition Property of Equality] Add 17 on both sides: 28 = 5x[Division Property of Equality] Divide 5 on both sides: 28/5 = xRewrite: x = 28/5Find the volume of the composite figure.
First, find the volume of the cylinder.
Use 3.14 for T. 9 cm
Cylinder Volume = [?] cm 8 cm 6 cm Rectangular Prism Volume = [ ]cm 8 cm 14 cm Total Volume of Composite Figure = [ ] cm3
Answer:
Volume for cylinder = 508.68 [tex]cm^{3}[/tex]
Volume of rectangular prism = 672 [tex]cm^{3}[/tex]
Total volume = 1180.68 [tex]cm^{3}[/tex]
Step-by-step explanation::
[tex]V = \pi r^{2} h[/tex] r = 4.5
= 3.14([tex]4.5^{2}[/tex]) (8) = 508.68
Volume for rectangular prism:
V = lwh = (14)(8)(6) = 672
Total volume = 508.68 + 672 = 1180.68 [tex]cm^{3}[/tex]
The dimensions of a beach ball are shown in the diagram below.
17 in
Which measurement is the closest to the volume of the beach ball in cubic
inches?
Answer:
Volume = 2572.44 in.³
Step-by-step explanation:
The volume of the beach ball = volume of a sphere = ⁴/3πr³
r = ½(17) = 8.5 in.
Plug in the value
Volume = ⁴/3 × π × 8.5³
Volume = ⁴/3 × π × 614.125
Volume = 2572.44 in.³
Can someone please give me the answer I’m giving brilliant for correct answer
Answer:
the last one (1,2)
Step-by-step explanation:
.......................
Answer:
C (-1,-2)
Step-by-step explanation:
The fourth vertex should be on the same Y value as the 2nd vertex and the same X value as the 3rd vertex so it should be (-1,-2)
In the boxes, provide a value for side a, side b, and angle C. The value of side a should be between 10 and 20. The value of side b should be between 20 and 30. The value of angle C should be between 20 and 70 (degrees).
Answer:
Step-by-step explanation:
This doesn't really make sense.
All you have to do is pick numbers that fall in between the numbers provided.
like:
a = 11
b = 21
C = 21
There's not really a question . . .
Charlotte walks home from school every day at a rate of
4 miles per hour. It takes her 30-minutes to reach
home. Her brother, Noah, runs home from the same
school every day at a rate of 6 miles per hour. How
many fewer minutes does it take Noah than Charlotte
to reach home from school each day? Be sure to
SHOW your WORK!
Answer:
It takes 10 fewer minutes for Noah than for Charlotte to home from school each day.
Step-by-step explanation:
We use the following relation to solve this question:
[tex]v = \frac{d}{t}[/tex]
In which v is the velocity, d is the distance, and t is the time.
Finding the distance:
Charlotte walks home from school every day at a rate of 4 miles per hour. It takes her 30-minutes to reach home.
This means that [tex]t = 0.5, v = 4[/tex]. Time is 0.5 because as the velocity is in miles per hour, the time has to be in hours. We use this to find d.
[tex]v = \frac{d}{t}[/tex]
[tex]4 = \frac{d}{0.5}[/tex]
[tex]d = 4*0.5 = 2[/tex]
The distance is of 2 miles.
Her brother, Noah, runs home from the same school every day at a rate of 6 miles per hour.
We have to find t, in hours, for which [tex]v = 6, d = 2[/tex]. So
[tex]v = \frac{d}{t}[/tex]
[tex]6 = \frac{2}{t}[/tex]
[tex]6t = 2[/tex]
[tex]t = \frac{1}{3}[/tex]
A third of an hour. In minutes, this is a third of 60, that is 60/3 = 20 minutes.
How many fewer minutes does it take Noah than Charlotte to reach home from school each day?
Noah: 20 minutes
Charlotte: 30 minutes
30 - 20 = 10
It takes 10 fewer minutes for Noah than for Charlotte to home from school each day.