Answer:
0.95
Step-by-step explanation:
[tex]Correlation \ coefficient \ (r) = \dfrac{covaraince \ between \ X \ and \ Y }{SD_X \times SD_Y }[/tex]
[tex]Correlation \ coefficient \ (r) = \dfrac{15 }{10^{1/2} \times 25^{1/2} }[/tex]
[tex]Correlation \ coefficient \ (r) = \dfrac{15 }{3.162 \times 5 }[/tex]
[tex]Correlation \ coefficient \ (r) = \dfrac{15 }{15.81 }[/tex]
[tex]Correlation \ coefficient \ (r) \simeq 0.95[/tex]
Is it A, B, or C? PLEASE HELP
Step-by-step explanation:
y = kx, where k is the constant of proportionality. (1)
Therefore y = x and line B depicts that.
Answer:
B)
Step-by-step explanation:
It's B) because if you look at the slope of the line it goes through all the boxes points.
Another way to do it is take to points and do
m=y2-y1/x2-x1
Hope this helps!
I need help please someone help
Answer:
x= 40 degrees
Step-by-step explanation:
The two angles inside must add up to 126, since the missing unknown angle is supplementary to 126 (where they add up to 180 degrees).
Thus
x + (2x+6) = 126
3x + 6 = 126
3x = 120
x = 40
please give thanks :)
What is the slope of the line that contains the two ordered pairs (1, 3) and (2, 5)?
Dimas is playing a game that uses a number cube. The sides of the cube are labeled from 1 to 6. Dimas wants to roll a 2 or 3. He rolls the number cube one time
Answer:
B. 1/3
Step-by-step explanation:
The total number of sides in the cube are 6 (1,2,3,4,5,6). If Dimas only wants to roll either a 2 or 3 then that would mean that he has 2 chances out of the total 6 probable outcomes to roll one of those numbers. Therefore, in order to find the probability of this happening in a single roll we need to divide the number of times that his two choices appear on the dice by the total number of sides the dice has, like so...
2 / 6 = x
If we simplify it would give us [tex]\frac{1}{3}[/tex]
Can someone help me?
Answer:
The probability that the pet seen was sick is 53.57%.
Step-by-step explanation:
Mary is planning her birthday party. She's inviting 7 friends and wants to buy party favors. The favors she wants come in packages of 3. How many packages will she need to buy in order to have enough party favors for all of her guests? *
Answer:
3 packages
Step-by-step explanation:
each package has 3
if she buys 1, she has 3 party favors
buys 2, has 6
buys 3, has 9
she can't buy 2 packages, then one friend doesn't get a party favor. so she will have to buy 3 packages, use 7, leave 2 extra.
please give thanks :)
Mary should buy 3 packages to have enough for all the friends.
What is words problem?A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
Given that, Mary is planning her birthday party. She's inviting 7 friends and wants to buy party favours. The favours she wants to come in packages of 3.
Since, Each package has 3 favours
if she buys 1, she has 3 party favours
If buys 2, has 6
And, if buys 3, has 9
she can't buy 2 packages, then one friend doesn't get a party favour.
So, she will have to buy 3 packages, use 7, leave 2 extra.
Hence, she will need 3 packages.
For more references on word problems, click;
https://brainly.com/question/2610134
#SPJ6
Madison counted the candy in her stocking. There were 127 skittles, 85 M&Ms, and 16 candy canes.
A. How many pieces of candy does Madison have in all?
B. If she eats half of her candy, how much will be left?
Answer:
she has 228 in all. but i do not know how much she has after she ate some
16. 8x5 – 16x4 + 8x3
Answer:
it is 0
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
Once you simplify the equation, you get 40-64+24. When you use 40+24, you get 64 which cancles out the other 64
50 Points. what is the value of x
Answer:
X will be = to 6°
Cause the lengths is 6
so 6 ×6° = 36°
I hope am wrong
A construction worker places a compass at various positions on a wall until the compass needle deflects to one direction. What is the worker most likely using a compass to find
Answer:
Sources of electrical current
Step-by-step explanation:
Based on the information given the reason why
He/ She places a compass at different positions on a wall until the compass needle change to a direction was because the construction worker
was most likely using the compass to find the Sources of an ELECTRICAL CURRENT or where the ELECTRICAL CURRENT originated from reason been that ELECTRICAL CURRENT is the movement of electric charge from cathode to anode .
Answer:
D. Sources of electrical current
Step-by-step explanation:
I just took the test
20% of 80
percentage idk what to put
Answer:
if you are asking 20% of 80, then its 16
Step-by-step explanation:
0.2 x 80 = 16
Answer:
25
Step-by-step explanation:
25
Percentage Calculator: 20 is what percent of 80? = 25.
Rachael walked 214 miles in 15 minutes, and Julie walked 334 miles in 25 minutes. Could you tell me who is faster, please?
Answer:
Rachael is faster.
you can tell by finding the unit amount.
Step-by-step explanation:
I can tell by finding the unit amount. (miles per minute)
Rachael:
214/15 = 14.2666666667 or about 14.27
Julie:
334/25 = 13.36 miles per minute.
Find the slope and the y-intercept of the graph of y=−7x+12.
Hi!
[tex]\spadesuit[/tex] We're given an equation in slope-intercept form.
The formula for slope-intercept is:[tex]\clubsuit~~~\large\boldsymbol{y=mx+b} ~~~\clubsuit[/tex]
where:
[tex]\clubsuit ~\boldsymbol{m - > slope}[/tex]
[tex]\clubsuit~~\boldsymbol{b- > y-intercept}[/tex]
Therefore,
[tex]\stackrel{\heartsuit}{\boxed{\boxed{\textsc{Answers:}\begin{cases}\bold{Slope:-7}\\\bold{y-intercept:12}\end{cases}}}}[/tex]
Cheers!!I hope that helped, have a wonderful day. :)
An airplane flying with the wind can cover a certain distance in 2 hours. The return trip against the wind takes 2.5 hours. Find the average airspeed and wind speed, if the one-way distance is 600 miles.
Answer:
Wind speed = 30 mph
Plane speed = 270 mph
Step-by-step explanation:
Given that :
Distance = 600 miles
Let speed of airplane = a ; speed of wind = b
Net speed ; with wind = a + b
Net speed against wind = a - b
Time taken with wind = 2 hours
Time taken against wind = 2.5 hours
Recall :
Speed = distance / time ; distance = speed * time
(a + b) * 2 = (a - b) * 2.5
2a + 2b = 600
a + b = 300 - - - (1)
a = 300 - b
2.5a - 2.5b = 600
a - b = 240 - - - (2)
300 - b - b = 240
300 - 2b = 240
-2b = - 60
b = 30
a = 300 - 30
a = 270
Wind speed = 30 mph
Plane speed = 270 mph
What would be the equivalent discount for this item be?
Answer:
it's almost $100 and there's $17 off. so 99.99-17 would make the exact cost 82.99
82.99/99.99= 0.8299 so you payed 83% and that would make it so you got a 17% discount.
but if you didn't want to do all the math, you could've just rounded the 99.99 up to 100, and $17 would make it a 17% discount.
(3,-8), (3, 2), (6, -1), (2, 2)) (-6, 3), (2,-2), (0, 8), (1, 1))
Answer:
yeet
Step-by-step explanation:
yeet
Write an equation of the line that passes through the given points.
(0,0), (2,6)
Answer:
y=3x
Explanation: Since the line passes through (0,0), the y-intercept is 0. The rate of change is 3, which can be onserved if you you plot these points on a corrdinate graph. Therefore, the equation is y=3x.
What does this symbol ± mean?
Plus or Minus.
For example.
5 ± 2 = 5 + 2 or 5-2
Therefore the answer is 7 or 3.
Answer:
It means that the number can be positive or negative.
Step-by-step explanation:
I hope this helps!!!
What is true about the relationship between miles and gallons?
solve the inequality −8 ≤ z + 6.4
Answer:
-14.4<or=z
Step-by-step explanation:
-8-6.4or = z+6.4-6.4
-14.4_<z
of their squares
The sum of the first a teoms of on
A
is 214. Find the frost 4 teams,
Answer:
So you have a summation of 4 terms
An Easy way to do this is to simplify the process:
You need X1+X2+X3+X4 to equal 214
Let the first number be 80
80+X2+X3+X4
Let X2 and X3 be 60 each
80+ 60+ 60+X4
Lastly we are at a sum of 200
So let X4 be 14
Therfore we have a sum of 4 X terms equal 214
Are the triangles congruent? and why?
SSS
SAS
ASA
AAS
HL
Answer:
they are congruent because SAS
Step-by-step explanation:
write the word sentence as an inequality
a number "q" multiplied by 1/4 is greater than -16
ill give brainliest
Answer:
[tex]\frac{1}{4}[/tex]q > -16 or [tex]\frac{q}{4}[/tex] > -16
Step-by-step explanation:
A furniture salesman earns 7% commission for his sales.
How much commission would he earn, if he sold a couch for
$800?
Answer:
He would get 56 dollars.
Step-by-step explanation:
56$
Item 1: sleeved dress $17.99
Item 2: skirt $16.19
Item 3: t shirt $8.99
Subtotal is $43.17
Discount the cheapest item 30% off. Subtract subtotal-discount for sale price. Tax is 3.5% add sale price + tax what is the final with tax?
Answer:
The final price including tax is $41.89
Step-by-step explanation:
The following items are on sale:
Sleeved dress $17.99
Skirt $16.19
T-shirt $8.99
Subtotal $43.17
The cheapest item is the T-shirt for $8.99 and it will be discounted by 30%:
$8.99 - 30/100 * $8.99 = $8.99 - $2.70 = $6.29
The total sale price is now: $43.17-$2.70=$40.47
Now we add the 3.5% tax:
$40.47 + 3.5/100 * $40.47 = $40.47 + $1.42 = $41.89
The final price including tax is $41.89
(3x — 3), (4y+4)°/60° Solve for y.
Simplify the expression 21b4 − 3b by combining like terms.
1. 18b5
2. 18b4
3. 21b4 − 3b
4. 18b3
simplify (y + 1)⁵ ÷ (y + 1)³
Answer:
[tex]given \\ \frac{ {(y + 1)}^{5} }{(y + 1) ^{3} } \\ as \: they \: have \: same \: base \\ {(y + 1)}^{5 - 3} \\ = (y + 1) ^{2} \\ or \: we \: can \: write \\ = (y + 1)(y + 1) \\ \\ hope \: it \: helps.[/tex]
Answer:
The answer is [tex]y^2+2y+1[/tex]
Explanation:
- Properties of Exponent -
[tex]\frac{a^m}{a^n}=a^{m-n}[/tex]
Our a is y+1
Our m is 5
Our n is 3
[tex]\frac{(y+1)^5}{(y+1)^3}=(y+1)^{5-3}\\(y+1)^2[/tex]
- Multiply The Polynomial -
As for the Quadratic Polynomial and being squared, we use the following formula:
[tex](x+y)^2=x^2+2xy+y^2[/tex]
Our x is y
Our y is 1
Thus,
[tex](y+1)^2=y^2+2(y)(1)+1^2\\(y+1)^2=y^2+2y+1[/tex]
As our simplified, multiplied form is [tex]y^2+2y+1[/tex]
In Louisville, 40% of the population is female and 60% are males. 36% of Louisville's population is under 18. The ratio of males to females who are under 18 is 2:1. If there are 1,176 males who are under 18, what is the population of females who are over 18.
Answer:
1411 females
Step-by-step explanation:
Given that:
Male population = 60%
Female population = 40%
36% of total population are under 18
Ratio of male to female under 18 = 2 : 1
Males under 18 = 1176
Females over 18 =?
The population of females under 18:
If males under 18 = 1176
Then female under 18 = 1176 / 2 = 588
Hence number of population under 18 = (1176 + 588) = 1764
1764 = 36% of the entire population
Hence, (100 - 36)% = 64% of the entire population are over 18
1764 = 0.36
x = 0.72
x = (0.72 * 1764) / 0.36
x = 3528
Hence, 40% of the population above 18 are female
0.4 * 3528 = 1411.2
= 1411 females are over 18
Plss answer!!
MERRY Christmas!!!
Critical Question. AAAAA
Answer:
Step-by-step explanation:
abc = 1
We have to prove that,
[tex]\frac{1}{1+a+b^{-1}}+\frac{1}{1+b+c^{-1}}+\frac{1}{1+c+a^{-1}}=1[/tex]
We take left hand side of the given equation and solve it,
[tex]\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+\frac{1}{c}}+\frac{1}{1+c+\frac{1}{a}}[/tex]
Since, abc = 1,
[tex]\frac{1}{c}=ab[/tex] and c = [tex]\frac{1}{ab}[/tex]
By substituting these values in the expression,
[tex]\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+\frac{1}{c}}+\frac{1}{1+c+\frac{1}{a}}=\frac{1}{1+a+\frac{1}{b}}+\frac{1}{1+b+ab}+\frac{1}{1+\frac{1}{ab}+\frac{1}{a}}[/tex]
[tex]=\frac{b}{b+ab+1}+\frac{1}{1+b+ab}+\frac{ab}{ab+1+b}[/tex]
[tex]=\frac{1+b+ab}{1+b+ab}[/tex]
[tex]=1[/tex]
Which equal to the right hand side of the equation.
Hence, [tex]\frac{1}{1+a+b^{-1}}+\frac{1}{1+b+c^{-1}}+\frac{1}{1+c+a^{-1}}=1[/tex]
