Answer:
3(x-9)=40
Step-by-step explanation:
Because distributive property is when you doe something that is in parenthesis. and it's in parenthesis.
Plz help this is due today NO LINKS OR GROSS PICTURES OR I Will REPORT And please show work
It is not 480 480 is the incorrect answer
Answer:
2280 the volume
Step-by-step explanation:
So one box = 480
So then what about 6 boxes?
you do 480 x 6 = 2880
480+ 480+ 480+ 480+480+480= 2880
Round your answer to the nearest hundredth.
BC=
Answer:
0.95
Step-by-step explanation:
tan35° = x/2
solve for x
x = 2tan35°
x = 0.947629
round to nearest hundredth
x = 0.95
Similar Triangles
Use the diagram, which is not drawn to scale, to decide which proportions are true.
a. I and IV only
b. II only
c. I and II only
d. I only
Please select the best answer with the choices provided
Answer:
A. I and IV only
Step-by-step explanation:
I calculated it logically
C What is the volume of the rectangular prism? 3 2 3. m 8 mm 9 mm
Answer:
267.75
Step-by-step explanation:
i think this because that what I got by multiplying 3 1/2 x 9 x 8 1/2
Will Give Brainliest!
Figure B is a scale image of Figure A.
Figure A 10.8, 7.2, 14.4cm
Figure B 2.7, 1.8, 3.6cm.
Answer:
4
Step-by-step explanation:
Please help me with this:
A teacher decorated her classroom with 3 times as many balloons as paper fans. She used 12 fewer streamers than twice the number of paper fans. If the teacher had a total of 120 balloons, paper fans, and streamers, how many of each kind of decoration did she use?
Answer:
She used 22 paper fans, 66 balloons, and 32 streamers.
Step-by-step explanation:
In order to solve this problem, we need to find out the value of the paper fans. Because we need to find out the balloon amount, which is 3 times as much. The amount of streamers is 12 fewer than two times. We can't find it out just yet since we don't know the value of the paper fans. To find it out:
First, let's call the amount of paper fan as "x".
Then, we need to find out the amount of balloons. It is 3 times x. Which is the same as 3x.
The equation is now x + 3x + (?) = 120
We need to find out the amount of the (?).
So, to do that, it says the value is 12 fewer than 2 times the value of x. (x, because it is the amount of paper fans.)
It should be 2x-12.
Now, the equation is x+3x+2x-12=120.
Once we solve it, we know "x" is 22.
Now, we can multiply 3 by 22. Which is 66.
Then we can multiply 22 by 2, which is 44, and subtract 12, which is 32.
To double check, 22 + 44 + 32 = 120.
That's your answer!
Answer:
Step-by-step explanation:
its 22, and 66, and 32
What is the radius of a hemisphere with a volume of 19160 ft', to the nearest tenth
of a foot?
Need answered ASAP GOT A TIMER!
Answer:
2
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
1. You have the following multiplication given in the problem above:
(x/3)(6/x)
2. Multiply the numerators and the denominators:
(x/3)(6/x) = 6x/3x
3. You can simplify the expression. Then, you have:
6x/3x = 2
Answer:
2
Step-by-step explanation:
1) simplify x
x/x = 1
2) simplify 6 with 3
6/3 = 2
3) multiply the two numbers
2*1 = 2
Find the x- and y-intercept x + 4y = 36
Answer:
x= 36 and y= 9
Step-by-step explanation:
because I said so. jk math
Answer:
x-intercept: 36
y-intercept: 9
Step-by-step explanation:
Hi there!
What we need to know:
The x-intercept occurs when y=0The y-intercept occurs when x=01) Determine the x-intercept
[tex]x + 4y = 36[/tex]
Plug in 0 for y
[tex]x + 4(0) = 36\\x=36[/tex]
Therefore, the x-intercept is 36.
2) Determine the y-intercept
[tex]x + 4y = 36[/tex]
Plug in 0 for x
[tex]0 + 4y = 36\\4y = 36[/tex]
Divide both sides by 4
[tex]y=9[/tex]
Therefore, the y-intercept is 9.
I hope this helps!
I WILL MARK BRAINLIEST IF CORRECT AND THE BEST ANSWER
PLZ DO IT ALL
Cindy plans to make a jewelry box shaped like a rectangular prism. She wants it to have a volume of 96 cubic inches.
Answer:
1: by using this equation x*y=96, or just list out 96's factors
2: 3 by 32
3: no, unless you want to use decimals.
4: finding the surface area
Math number 12
Find the value of x
Answer:
10
Step-by-step explanation:
LN = 4 + x - 8 = x - 4
LS = 3 + x - 5 = x - 2
By intersecting secants theorem:
[tex]LM\times LN = LK\times LS \\ \\ 4(x - 4) = 3(x - 2) \\ \\ 4x - 16 = 3x - 6 \\ \\ 4x - 3x = 16 - 6 \\ \\ x = 10[/tex]
Hello Good morning can someone give me the answer of this operation?
39 + 1 - 24 / 6=
Also can you tell me the order? :> Thanks!!
Answer:
36
Step-by-step explanation:
39+1-24/6 =
we gotta follow pemdas so we divide 24 by 6 first
39+1-4=
then its just adding and subtracting so just go left to right
40-4=
36
1. The ages of customers at a store are normally distributed with a mean of 45 years and a standard deviation of 13.8 years.
(a) What is the z-score for a customer that just turned 25 years old? Round to the nearest hundredth.
(b) Give an example of a customer age with a corresponding z-score greater than 2. Justify your answer.
Part (a)
The raw score is x = 25. The mean and standard deviation are mu = 45 and sigma = 13.8 respectively.
The z score is computed with the formula below
z = (x-mu)/sigma
z = (25-45)/13.8
z = -1.449275 approximately
z = -1.45 is the final answer
========================================================
Part (b)
We want the z score to be larger than 2. So z > 2.
This is the same as wanting the expression (x-mu)/sigma to be larger than 2
(x-mu)/sigma > 2
(x-45)/13.8 > 2
x-45 > 2*13.8
x-45 > 27.6
x > 27.6+45
x > 72.6
If a customer's age is greater than 72.6 years, then this means they have a z score greater than 2. We can say they are more than 2 standard deviations above the mean.
If you need a whole number, then I'd round up to 73. Or you could pick any age larger than this.
Reflect P (-5,10) over the x-axis. What are the coordinates of the reflected point? What quadrant is the reflected point in?
Answer:
I need the answer 2 QwQ....In Buenos Aires, the average daily high temperature temperature in a year is reported to be 18.2^{\circ}\text{C}18.2 ∘ C18, point, 2, degrees, start text, C, end text. Catalina believes that last year was warmer than usual. In order to test her belief, she takes a simple random sample of 202020 days from last year, and records the daily high temperature on each chosen day. She finds that the sample mean temperature is 19.1^{\circ}\text{C}19.1 ∘ C19, point, 1, degrees, start text, C, end text and the sample standard deviation is 7.9^{\circ}\text{C}7.9 ∘ C7, point, 9, degrees, start text, C, end text. Catalina wants to use these sample data to conduct a ttt test on the mean. Assume that all conditions for inference have been met.
Answer:
H 0
:μ=18.2 ∘ C
H a
:μ>18.2 ∘ C
Step-by-step explanation:
Khan............... The null hypothesis has a statement of equality, and the direction of alternative hypothesis (>)(>)left parenthesis, is greater than, right parenthesis matches her belief that last year was warmer.
The three conditions for hypothesis testing are approximately met, and the null hypothesis is that the population mean daily high temperature in Buenos Aires is 18.2∘C.
What is hypothesis testing?Hypothesis Testing is a type of statistical analysis in which you put your assumptions about a population parameter to the test. It is used to estimate the relationship between 2 statistical variables.
here, we have,
The three conditions for hypothesis testing are approximately met based on the information given.
Null hypothesis (H0) is that the population mean daily high temperature in Buenos Aires is 18.2∘C. Alternative hypothesis (Ha) is that the population mean daily high temperature in Buenos Aires is greater.
The test statistic is calculated as (sample mean - population mean) / (sample standard deviation / sqrt(sample size)).
The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed test statistic, assuming the null hypothesis is true. It can be calculated using a t-distribution with degrees of freedom equal to the sample size minus one.
To learn more about hypothesis testing please click on below link.
brainly.com/question/29607047
#SPJ3
A set of books sits on a shelf at a store. This line plot
shows the thickness of each book. Amelie buys the
thickest book on the shelf. Raj buys one of the thinnest
books on the shelf.
How much thicker is Amalie's book than Raj's book?
Answer:
The difference in their thickness is: [tex]2\frac{1}{2}[/tex]
Step-by-step explanation:
Given
The attached plot which represents thickness of books
Required
Difference in the thickness of Amalie's (A) and Raj's (R)
From the question, we understand that:
[tex]A \to[/tex] Thickest
[tex]R \to[/tex] One of the least
This implies that:
[tex]A = 4[/tex]
[tex]R = 1\frac{1}{2}[/tex]
The difference (d) is:
[tex]d = 4 - 1\frac{1}{2}[/tex]
[tex]d = 2\frac{1}{2}[/tex]
Answer:
2 1/2
Step-by-step explanation:
Zoe placed colored blocks on a scale in science class. Each block weighed 0.8 ounces. The total weight of all the colored blocks was 12.8 ounces. How many blocks did Zoe place on the scale? Write and solve an equation to find the answer.
Answer:
16 blocks
Step-by-step explanation:
equation: 0.8x = 12.8
if each block is 0.8oz and the total weight is 12.8oz then divide 12.8 by 0.8 and get 16! in other words, 0.8oz goes into 12.8oz 16 times, meaning there are 16 blocks that each weigh 0.8oz
PLEASE HELP ME PLEASEE !
Answer:
[tex]\sigma = 0.831[/tex] --- Standard deviation
[tex]Mode = 10[/tex]
Step-by-step explanation:
Given
[tex]x = 9,8,10,9,8,10,9,10,8,10[/tex]
Solving (a): The population standard deviation
First, we calculate the mean
[tex]\bar x = \frac{\sum x}{n}[/tex]
So, we have:
[tex]\bar x = \frac{9+8+10+9+8+10+9+10+8+10}{10}[/tex]
[tex]\bar x = \frac{91}{10}[/tex]
[tex]\bar x = 9.1[/tex]
The standard deviation is:
[tex]\sigma = \sqrt{\frac{1}{n}\sum (x - \bar x)^2}[/tex]
So, we have:
[tex]\sigma = \sqrt{\frac{1}{10}*[(9 - 9.1)^2+.................+(10- 9.1)^2]}[/tex]
[tex]\sigma = \sqrt{\frac{1}{10}*6.9}[/tex]
[tex]\sigma = \sqrt{0.69}[/tex]
[tex]\sigma = 0.831[/tex]
The mode is:
[tex]Mode = 10[/tex]
10 has the highest frequency of 4
Degree and Radian Measures
What is the radian equivalent of 60°?
a. π/4
b. π/3
c. π/2
d. π/5
Please select the best answer from choices provided
Answer:
B. π/3
Step-by-step explanation:
I calculated it logically
Answer:
B: pi/3
Step-by-step explanation:
The conversion is:
degrees° *
60pi/180= pi/3
express as a trinominal.
(2x+6)(2x+8)
Answer:
4x^2 + 28x + 48
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
4x^2 +28x+48
Step-by-step explanation:
see steps below:)
A tank initially contains 100 gallons of brine with 10 lb of salt dissolved in it. Brinecontaining 0.4 lb of salt per gallon ows from an outside source into the tank at a rateof 5 gal/min. The mixture is discharged out of the tank at the same rate of 5 gal/min..Assume that solutions are well-stirred at all times.
Required:
Find the amount of salt in the tank at the end of 40 minutes.
Answer:
35.94 lb
Step-by-step explanation:
The net mass flow rate dm/dt = flow rate in - flow rate out
mass flow rate in = concentration in × volume flow rate in = 0.4 lb/gallon of salt × 5 gal/min = 2 lb/min
Let m(t) be the mass present at time, t.
So, the concentration at time, t = m(t)/volume of tank = m(t)/100
mass flow rate out = concentration out × volume flow rate out = m(t)/100 lb/gal× 5 gal/min = m(t)/20 lb/min
So, dm/dt = 2 lb/min - m(t)/20 lb/min
So, dm/dt = 2 - m(t)/20
dm/dt = [40 - m(t)]/20
separating the variables, we have
dm/[40 - m(t)] = dt/20
integrating, we have
∫dm/[40 - m(t)] = ∫dt/20
-1/-1 ×∫dm/[40 - m(t)] = ∫dt/20
1/-1 ×∫-dm/[40 - m(t)] = ∫dt/20
1/-1 ×㏑[40 - m(t)] = t/20 + C
-㏑[40 - m(t)] = t/20 + C
㏑[40 - m(t)] = -t/20 - C
taking exponents of both sides, we have
[tex]40 - m(t) = e^({\frac{-t}{20} - C}) \\40 - m(t) = e^{\frac{-t}{20}}e^{-C} \\40 - m(t) = Ae^{\frac{-t}{20}} (A = e^{-C})\\m(t) = 40 - Ae^{\frac{-t}{20}}[/tex]
when t = 0 m(0) = 10 lb
So
[tex]m(t) = 40 - Ae^{\frac{-t}{20}}\\m(0) = 40 - Ae^{\frac{-0}{20}}\\10 = 40 - Ae^{0}\\10 = 40 - A\\A = 40 - 10 \\A = 30[/tex]
So,
[tex]m(t) = 40 - 30e^{\frac{-t}{20}}[/tex]
when t = 40 minutes, m(40) =
[tex]m(40) = 40 - 30e^{\frac{-40}{20}}\\m(40) = 40 - 30e^{-2}\\m(40) = 40 - 30 X 0.1353\\m(40) = 40 - 4.06\\m(40) = 35.94[/tex]
So, at the end of 40 minutes, the amount of salt in the tank is 35.94 lb
find the perimeter and area of the figure to the nearest hundredth use 3.14 for pi.
Answer:
Perimeter = 36.84 ft
Area = = 64.26 ft²
Step-by-step explanation:
✔️Perimeter of the figure = the length of the surrounding border the rectangle + surrounding border of circle
Length for surrounding border of the rectangle = 3 + 3 + 3 + 3 + 3 + 3 = 18 ft
Surrounding border of a circle = circumference of a full circle (two half circle makes 1 full circle)
Circumference of the circle = πd
diameter (d) = 12 - (3 + 3) = 6 ft
π = 3.14
Circumference = 3.14*6
= 18.84 ft
✅Perimeter = 18 + 18.84 = 36.84 ft
✔️Area = area if the rectangle + area of the full circle
= L*W + πr²
L = 12 ft
W = 3 ft
π = 3.14
r = ½(6) = 3 ft
Plug in the values
Area = 12*3 + 3.14*3²
= 36 + 28.26
= 64.26 ft²
Similar Triangles
Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms.
a. 4/10 = 5/8 = 2/5
b. 4/8 = 5/10 = 1/2
c. 10/4 = 8/5 = 5/2
d. 4/5 = 8/10 = 4/5
Please select the best answer from the choices provided
Answer:
B. 4/8 = 5/10 = 1/2
Step-by-step explanation:
I calculated it logically
Answer:
B I think plz give brainlest If correct
Step-by-step explanation:
Use the figure to find the measures.
Lateral area =
Total area =
Volume =
Answer:
Lateral area = 2.pi.r.h = 2 x pi x 2 x 3 = 12 pi
Total area = lateral area + pi. r^2 . 2 = 20 pi
Volume = pi . r^2 . 2 . h = 24 pi
What is 10% of 7,518?
Answer:
751.8
Step-by-step explanation:
HELP PLEASE!
Trish is shopping for a new vacuum online. The
reviews for the vacuum she wants show that 104
people gave the product 5-stars. If this number
represents 65% of the reviews left for the product,
how many total reviews were left for the product?
67.6
77
160
184
Answer: 160
Step-by-step explanation:
Based on the information given in the question, let the total reviews left for the product be represented by x.
Therefore, 65% of x = 104
65% × x = 104
0.65 × x = 104
0.65x = 104
x = 104/0.65
x = 160
Therefore, 160 reviews were left for the product.
I-Ready Surface area of composed figures what is the surface area of this design
Answer: 512
Step-by-step explanation:
Hello, I hope the answer is correct if not let me know and i will work step by step on it with you. Your welcome and Happy to help.
The surface area of the design is 384 inches².
What is Surface Area?The area of a three dimensional object on it's outer surface is called the surface area of the object.
The given design is a cube.
All the sides are of the length 8 inches.
The formula to find the surface area of a cube is,
Surface area = 6a², where "a" is the length of a side of the cube.
Given, a = 8 inches
Surface area of the design = 6 × 8²
= 6 × 64
= 384 inches²
Hence the given design has the surface area of 384 inches².
Learn more about Surface Area here :
https://brainly.com/question/29298005
#SPJ2
Choose the best answer to complete the sentence.
If a point lies on the angle bisector of an angle, then it is
[Select)
from the two sides of the angle.
B
Answer:
Equidistant
Step-by-step explanation:
When we have a point lying on the angle bisector, it stands at an equal distance from the two sides of the angle
The purpose of the angle bisector is to divide the angle into two different equal parts
So, for a point to lie on this, it means it of the same distance from the two points of the angle
HELP ME PLS\ AHHHHHHHHHHHHHH HWLP HE;P I CANT OD THIS ]
Answer:
ummm. what do you need help with???
What is the end behavior for the equation y= -2x^3+1
I think the answer is y= -6x + 1
