Answer: D. The mean is 31, and the standard deviation is 6.
Step-by-step explanation:
Given the data :
X = mean = 12 ; Standard deviation = 3
W = 7 + 2x
Variance of W = 2x
Variance = Standard deviation²
(2x)² = 4x²
Variance
Standard deviation of X = 3
Variance (W) = 4*3² = 4 * 9 = 36
Variance (W) = 36
Standard deviation = sqrt(variance)
Standard deviation = sqrt(36) = 6
Mean ; of x = 12
Mean(W) = 7 + 2(12)
Mean = 7 + 24
Mean = 31
Can someone please help
Answer:
Hbecause a right angle's base is on the bottom
Step-by-step explanation:
sub to Pen Paper
What is the measure of angle L?
What is the length of JL?
What is the length of KL?
Please help
Answer:
53
Step-by-step explanation:
[tex]K+J+L = 180\\90 + 37 + L = 180\\L = 53[/tex]
Question
-2(8)=
I really need help please! I will pay u back with good things! :)
Answer:
-2(8)=16
Step-by-step explanation:
-2(8) is equal to -2 times 8/ -2 x 8
So 2 times 8 is 16, but since it's negative 2 it takes the negative sing
Please help me ASAP
Answer:
With What
Step-by-step explanation:
Please help me solve this !:)
Explain your answer
I will give braisnlt .
Answer:
A a rotation 180 degrees about the origin seems right
Answer:
B
Step-by-step explanation: Too easy to explain
Write an expression, using an exponent that is equivalent to 6 x 6 x 6 x 6 x 6.
Answer:
6^5
Step-by-step explanation:
put the 5 and make it tiny on top of the 6
Answer:
6^5 to give u the same thing as 6×6×6×6×6×6
Evaluate 5^-4. Write your answer as a fraction in simplest form
What is the largest integer n such that (n^2-38) / (n +1) is an integer?
a. 36
b. 38
c. 72
d. 76
e. None of these
Answer:
a. 36
Step-by-step explanation:
for (n^2-38)/(n+1) to be an integer, n+1 must completely divide, n^2-38.
we check with the options
option a n=36 sutisfies the above condition.
(36^2-38)/36+1 = 1258/37= 34 , which is an integer. Therefore, largest integer would be 36
if there are 45 seats in 9 rows how many seats are in 1 row.
Answer: Their is 5 seats in 1 row.
Step-by-step explanation: 9x5=45 and 45÷9=5
A chemist has a solution of 65% pure acid and another solution of 30% pure acid. How many gallons of each will make 350 gallons of 55% pure acid solution?
Answer:
250 of 65% acid
100 gallons of 30% acid
Really sorry if this is incorrect, I had this question on my Lesson 16 test, and I don't know if it's correct or not...
Following are the calculation to the given question:
Assuming
x=The number of gallons of pure acid [tex](50\%)[/tex]
y = The number of liters of pure acid at [tex](80\%)[/tex] a concentration
[tex]\to x+y = 350[/tex]
The total quantity of gallons of each of the two types of pure acids............(1)
[tex]\to 0.65x+0.30y = 0.55(x+y)[/tex]
the mixture's acidity
[tex]\to 0.65x+0.30y = 0.55(350)\\\\\to 0.65x+0.30y = 192.5 ..........(2)[/tex]
So we have two equations and two variables to work with.
[tex]\to x+y = 350\\\\\to 0.65x+0.30y = 192[/tex]
multiply the first equation by [tex]0.30[/tex]
[tex]\to 0.30x+0.30y = 105\\\\\to 0.65x+0.30y = 192[/tex]
Subtract the second equation from the first
[tex]\to 0.35x = 87\\\\\to x = 248. 57 \approx 248 \ gallons\\\\ \to y = 350-248 = 102\ gallons\\\\[/tex]
As a result, we'll need 248 gallons of 65% pure acid and 102 gallons of 30% pure acid.
Learn more:
brainly.com/question/16352400
Plzzz help me be serious plzz
If you know how, please explain. My brain is splitting in half trying to process this trigonometry stuff
Answer:
[tex]\huge\boxed{\text{E. } \frac{1}{2} }[/tex]
Step-by-step explanation:
When finding the cosine of an angle, we need to note what each terms mean.
Using the acronym SOH CAH TOA, we know that the
Cosine of an angle will be it's
Adjacent side divided by the
Hypotenuse.
The side adjacent to the 60° angle is 1, and the hypotenuse of the triangle is 2. Therefore, the adjacent over the hypotenuse is [tex]\frac{1}{2}[/tex], making the cos of 60°
[tex]\frac{1}{2}[/tex].
Hope this helped!
During a basketball game, the coach needs to select a player to make the free throw after a technical foul on the other team. There is a 68% chance that the coach will select you and a 26% chance that the coach will select your friend. What is the probability that you or your friend is selected to make the free throw?
For the probability of you or your friend add the probability of each together:
68% + 26% = 94% (0.94 if you need it as a decimal)
Answer: there's an 42 percent chance that your friend might make a free throw.
Step-by-step explanation: if u subtract u will get your answer that's bow i got this answer.
please helppppp. i don’t get it and the teacher doesn’t explain it.
Answer:
1. 22
2. 12
3. Sorry, I'm unable to solve for 3.
4. 5
Step-by-step explanation:
AB is congruent to AD so let's solve the equation:
[tex] \: \: \: \: \: \: \: \: \: \: \: 8x - 2 = 6x + 4 \\ \frac{ - 6x \: \: \: \: \: \: \: \: \: \: \: = - 6x}{2x - 2 = 4} \\ \frac{ \: \: \: \: \: \: \: \: \: \: + 2 = + 2}{ \frac{2x}{2} = \frac{6}{2} } \\ x = 3[/tex]
☆Now we plug in for AD.
[tex]AD \\ 6x + 4 \\ 6(3) + 4 \\ 18 + 4 \\ 22[/tex]
---------------
m<CED is on a right angle, that angle equal 90 degrees.
[tex]7x + 6 = 90 \\ \frac{ \: \: \: \: \: \: - 6 = - 6}{ \frac{7x}{7} = \frac{84}{7} } \\ x = 12[/tex]
-----------
#4. You can do the Pythagorean theorem
[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {4}^{2} + {3}^{2} = {c}^{2} \\ {16} + 9 = {c}^{2} \\ \sqrt{25} = {c}^{2} \\ 5 = c[/tex]
------------
Solve.
X = -7
4x - 4y = 12
(x,y)
Answer:
(-7, -10)
[tex]x=-7\\y=-10[/tex]
Step-by-step explanation:
[tex]4x-4y=12[/tex]
Substitute x for -7.
[tex]4(-7)-4y=12[/tex]
Multiply 4 by -7.
[tex]-28-4y=12[/tex]
Add 28 on both sides.
[tex]-4y=40[/tex]
Divide -4 on both sides.
[tex]y=-10[/tex]
Multiple-choice questions
Tick the correct answer to each of the questions below.
1 When selling a product to your client it is important to:
a make sure it is the most expensive
b give good advice on how to use it
c make sure the sale is quick
d put it in an attractive bag
2 Always having retail products in stock is one way of:
a spending a lot of money on stock
b making more money
c leaving the salon vulnerable to theft
d keeping clients happy
3 Communication occurs between people through:
a body language and speech
b talking to the client in consultation
c verbal, non-verbal and written forms
d verbal and written forms
Answer:
1. B
2.D
3.D
Don't hold me to my answers, they are just the best answers and i have experience with these things. I hope this helps
Answer:
1=b
2=b
3=c
Step-by-step explanation:
I HOPE THIS HELPED
IF WRONG IM SORRY HAVE A WONDERFUL WEEK:)
Please help!! Find the length of the radius of circle O.
Answer: 4.5 units
Step-by-step explanation:
OD and OC are both radii of the circle O. All radii of the same circle are equal. Thus,
[tex]6x+2=10x-16[/tex]
18=4x
x=4.5
Hope it helps :)
Sching Equations with Variables on both sides 1
A
Acelas
Solve for x.
X-6 = 5(x + 2)
Answer:
Step-by-step explanation:
here you go mate
step 1
x-6 = 5(x + 2) equation/Question
step 2
x-6 = 5(x + 2) simplify
x+(-)6=5x+10
x-6=5x+10
step 3
x-6=5x+10 subtract 5x
-4x-6=10
step 4
-4x-6=10 add 6
-4x=16
step 5
[tex]\frac{-4x}{-4}=\frac{16}{-4} \\[/tex]
answer
x=-4
Please Help will get brainliest. click image
I do not know... I'm sorry...
Write the equation that describes the line with slope = 4 and y-intercept = -2 in slope-intercept form.
Answer:
2 66
Step-by-step explanation:
beacuse ima gansta and you a cracka so whats up with it
Can someone please help? :)
Answer:
5
Step-by-step explanation:
Answer:
42.....? i dont know-if im wrong im so sry-im bad at this stuff
Step-by-step explanation:
happy new year!
13a+15a
i need the answer now.
Answer:
28a
Step-by-step explanation:
add the 13 and the 15 but make sure you put the a back on the end
Answer:
28a
Step-by-step explanation:
13a + 15a = 28a
Just simply add the like terms.
What's the best app for graphing answers like domain y intercept all those things
Answer: it’s not an app but desmos graphing calculator works for me
Step-by-step explanation:
Spider monkey the tail is. 60% of the length shown. What is the length of its tail
Answer:
male monkeys tail can have 1 to 1.5 feet or 31 to 45 cm
female monkeys tail can have 2.1 to 2.5 feets or 64 to 75 cm
Drag the values from the problem and fill in the blanks to create and solve a system of equations.
Overview
KM
First
<
Previous
>
Skup
Huck has a handful of coins. There are 13 total
coins and he only has nickles and dimes. He knows
that he has $1.05 in total money. How many dimes
and nickles does he have?
x + y = |(13
Let x = # of nickels
Let y = # of dimes
y = ||1.05
Equation for the
number of coins
Remember
X
Give up
X +
Equation for the
value of the coins
Submit
X =
y =
Answer: uhhh
Step-by-step explanation:
What involves examining and evaluating information, as well as weighing alternatives and considering consequences?
Answer: Critical Thinking.
Step-by-step explanation:
Critical thinking is the process of conceptualizing, applying, analyzing, synthesizing, and/or reviewing data acquired from, or generated by, observation, experience, reflection, reasoning, or communication actively and skillfully as a guide to intellectually disciplined belief and action.
Roberto wants to display 18 sports cards in an album. Some pages hold 2 cards and others hold 3 cards. How many different ways can Roberto display his figures?
Answer: The answer is 2.
HOPE IT HELPS!!
5 star rating help quick
Answer:
i think b
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
It is the only one with the coordinates (1,15) (3,25) (5,35) (7,45)
If a bus travels at 48MPH how long will it take to be able to travel 60 miles
the ratio of boys to girls in a group of 2:1. if there are 22 more boys than girls, work out how many people there are in a solo
Answer:
There is 11 girls but 33 people in solo
