Answer: (80+90+z)/3=90
Step-by-step explanation:
Answer:
(80+90+x) /3 =90
Step-by-step explanation:
Which of the following are most likely to lead to a narrow confidence interval? Homework Help: 5DD. Changes in confidence interval based on changes in standard deviation or sample size (Links to an external site.) (DOCX)
Answer:
C
Step-by-step explanation:
2895÷229=? write your answer as a whole number and remainder
Answer:
the answer is 12.6419214
Hello, I need the steps. I'm kinda confused. Thanks!
Answer:
y = -[tex]\frac{2}{3}[/tex] x - 3
Step-by-step explanation:
The general form of the equation of the line (linear equation) is:
y = ax + b
The line passes through (-3, -1) and (6, -7), i.e:
(1) (x=-3, y=-1) is a point that verifies the equation of the line, and
(2) (x=6, y=-7) also verifies the equation.
So we can put up a system of 2 equations to obtain a and b:
y = ax + b
(1) -1 = a (-3) + b
(2) -7 = a (6) + b
______________
substracting (1) - (2) we can obtain a:
-1 - (-7) = a (-3-6) ⇒ 6 = -9 a ⇒ a = -2/3
by replacing a in (1) we can obtain b:
-1 = -2/3 (-3) + b ⇒ -1 -2 = b ⇒ b = -3
so, the equation is: y = ax + b ⇒ y = -2/3 x - 3
Verification: (2) giving x= 6, let's see if y=-7 is obtained:
y = -2/3 6 - 3 ⇒ y = -4 - 3 = 7 ⇒ RIGHT!
Will mark as brainliest if correct!
Answer:
the answer is A
Step-by-step explanation:
48/50 x 100% = 96% of student wearing tennis shoes
100% - 96% = 4% students not wearing tennis shoes
A mixture of purple paint contains 8 teaspoons of red paint and 12 teaspoons of blue paint. To make the same shade of purple paint using 36 teaspoons of blue paint, how much red paint would you need?
Answer:
24 teaspoons of red paint would be needed.
Step-by-step explanation:
Given that the initial mixture contains 8 teaspoons of red paint and 12 teaspoons of blue paint, this mixture contains a total of 20 units of paint, of which 8 are red, that is, 8 out of 20. Therefore, the proportion of red paint is 40%, while the proportion of blue paint is 60% remaining.
Therefore, in the case of making the same mixture (with the same proportion) using 36 teaspoons of blue paint, the necessary amount of red paint is determined through the following calculation:
60 = 36
40 = X
((40 x 36) / 60) = X
1,440 = 60 = X
24 = X
Thus, 24 teaspoons of red paint would be needed.
Based on △GHI below, which of the following inequalities is true?
Answer:
C. [tex] \overline{GI} < \overline{GH} < \overline{HI} [/tex]
Step-by-step explanation:
In a triangle, the longest side is opposite to the largest measure of angle. The medium side is opposite to the medium angle, while the shortest side is opposite to the smallest angle.
In ∆GHI,
✍️m<G = 95°, it is opposite to [tex] \overline{HI} [/tex]
<G is the largest angle, therefore, [tex] \overline{HI} [/tex] is the longest side.
✍️m<I = 180 - (95 + 38) = 47°.
<I is opposite to [tex] \overline{GH} [/tex]
<I is the medium angle, therefore, [tex] \overline{GH} [/tex] is the medium side.
✍️m<H = 38°, it is opposite to [tex] \overline{GI} [/tex]
<h is the smallest angle, therefore, [tex] \overline{GI} [/tex] is the shortest side.
✅This means:
[tex] \overline{GI} < \overline{GH} < \overline{HI} [/tex]
Find the slope of the line that passes through the points (1.9) and (2, 5).
AV
Answer:
-2 is the slope
Step-by-step explanation:
Slope=Rise/Run=(y2-y1)/(x2-x1)=(5-9)/(2-1)=-4/2=-2, therefore the slope is -2
if £2000 is placed into a bank account that pays 3% compound interest per year, how much will be in the account after two years?
Answer:
2121.8
Step-by-step explanation:
2000(1+0.03/1)^2
A= P(1+ r/n) ^nt
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest applied per time period
t = number of time periods elapsed
I don't remember what I learned. So, this might be wrong because I googled the formula :)
Is y=10 a function?
Answer:
Yes
Step-by-step explanation:
x=10 would not however since it is a vertical line and fails the vertical line test where an x value cannot be repeated more than once.
y=10 would be a horizontal line coming from the point (0,10)
I need help on this problem. Not good with word problems
Answer:
the one where your mouse is at
Step-by-step explanation:
first one
Answer:
2f + 10 = 20
Step-by-step explanation:
If he wants to give two candy bars to each friend, then each friend is worth 2f.
He wants to have 10 left over, so 10 + 2f must be equal to 20. In other words 2f = 20 - 10, which means 2f + 10 = 20.
I hope this makes sense.
What is y = -1/3x - 9
Answer:
Step-by-step explanation:
Use the slope-intercept form
y=mx+b
to find the slope m and y-intercept b.
Slope: −13
y-intercept: (0,−9)
i need help???? ???
Answer:
Upper Quartile
Step-by-step explanation:
The third quartile (Q3) is the middle value between the median and the highest value of the data set. It is also known as the upper quartile or the 75th empirical quartile and 75% of the data lies below this point.
ed
A running track has two straight sides with length 130 m and two semicircle
ends with radius 40 m. It takes Kat 20 seconds to jog 80 m. How long would
it take her to jog around the track 42 times? Give your answer in hours and
minutes, to the nearest minute.
40 m
130 m
Answer:
1 hour 29 minutes and 29 seconds
Step-by-step explanation:
We need to find the circumference of the two semicircles of the track (which forms a full circle of radius 40m):
pi×40×2 = 80pi
The total length of the track to be travelled would be:
(80pi+130+130) × 42 = (80pi+260) ×42
= 21 476m (Rounded to 5 s.f.)
80m/20s
1s = 80÷20
= 4m
For every 1 second, Kat travels 4m.
Total Time taken:
21 476÷4 = 5369 seconds
= 1 hour 29 minutes and 29 seconds
Choose the solutions to the quadratic equation
x2 - 8x - 9 = 0.
-21
ex? - 8x = 9 to
-1
9
29
DONE
2+4 i need help right now
Answer:
6?
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
2 + 4 =6
just add 2 by 4 than ans 6
Please help me it due today at 11:59pm please help me will mark the brainiest please
Answer:
y = 69
Step-by-step explanation:
start with the distributive property:
5/9 * y and 5/9 * 3
and now you have: 5/9y + 15/9 = 40
and we have to isolate y so subtract 15/9 from both sides:
5/9y + 15/9 = 40
- 15/9 -15/9
and now you have 5/9y = 345/9
and now divide both sides by 5/9 so: 5/9y divided by 5/9 = y
and 345/9 divided by 5/9 = 345/5 and lets simplify....
y= 69
hope this helps luv
percentage of households with internet access is equal to 60%
Answer: Is there more to the question if so please tell me and i'll answer.
Step-by-step explanation:
DROP AN ANSWERRRR!!!!!
Answer:
D
Step-by-step explanation:
The subset of the sample space probability experiment
Step-by-step explanation:
The sample space of a random experiment is the collection of all possible outcomes. An event associated with a random experiment is a subset of the sample space. The probability of any outcome is a number between 0 and 1. The probabilities of all the outcomes add up to 1.
the line segment shown is reflected over the y - axis what are the new coordinates of point A
(79,35+7,32) x 42,2-95,3
Answer:
3562.174
Step-by-step explanation:
happy thanksgiving
Help!!!!please, I need to answer this question
Answer:
m<B = 62°
Step-by-step explanation:
Given that ∆ABC is congruent to ∆TUV, it follows that their corresponding angles are equal to each other. Therefore:
m<B = m<U
m<B = (3y + 2)°
m<U = (4y - 18)°
Thus,
3y + 2 = 4y - 18
Collect like terms
18 + 2 = 4y - 3y
20 = y
y = 20
m<B = (3y + 2)°
Plug in the value of x
m<B = 3(20) + 2
m<B = 60 + 2
m<B = 62°
PLEASE HELPPP
due tonighttt
Answer:
no it is not a function
domain: -4, 0, 6
range: 12, 18, 40
After living in his house for 15 years, a man sold it for Rs. 7,000 profit and purchased a new
one for Rs. 1,000 more than twice the selling price of his old one. If the new house cost 3 times
the original price of the old one, what did he pay for each?
please answer it asap. thanks in advance:)
Answer:
He paid 5,000 for the old home, which was the original price of it.
And he paid 15,000 for the new home.
Step-by-step explanation
Twice the selling price of his old one, the selling price was 7,000
7,000 * 2 = 14000.
14000 + 1000 = 15000.
15,000 is three times more than he originally paid for his old home.
n Purchased a new one for 1,000 more than twice the selling price.
is y = -x + 5 non-linear or linear
Answer:
It's linear
Step-by-step explanation:
Linear equations have no exponents higher than a 1, which is the case for this equation cause if there's no exponent it's cause it's just a 1. Non-linear has a exponent higher than a 1, ex. [tex]x^{2}[/tex]
What is the tax on an item that is $42.50 if the tax rate is 9%?
Answer:
3.83
Step-by-step explanation:
find 9% of 42.50
What about this one I kinda don’t get it
A roller coaster is going down the slope and the speed is 6m/s . 10 seconds later it has reached the bottom of the slope with a speed of 35m/s. what is the acceleration
Answer:
The acceleration is 2.9m/s^2
Step-by-step explanation:
Given
[tex]Initial\ Speed\ (u) = 6m/s[/tex]
[tex]Final\ Speed\ (v) = 35m/s[/tex]
[tex]Time\ (t) = 10s[/tex]
Required
Determine the acceleration
This question will be answered using Newton's first equation of motion.
[tex]v = u + at[/tex]
Substitute values for v, u and t
[tex]35 = 6 + 10 * a[/tex]
[tex]35 = 6 + 10 a[/tex]
Collect Like Terms
[tex]10a = 35-6[/tex]
[tex]10a = 29[/tex]
Solve for a
[tex]a = 29/10[/tex]
[tex]a = 2.9[/tex]
Hence, the acceleration is 2.9m/s^2
The original price of a pair of jeans is $32.50. The discount is 15% off the original price. What is the amount of the discount?
Answer:
I got 4.875
Step-by-step explanation:
so it would be either $4.87 or rounded up would be $4.88
the highest temperture ever recorded in continent was 45 celcius and lowest was-55 C what are corressponding tempurtures in degrees fahenheight? highest temperture was _ F
Answer:
113°F is the highest temperature and -67° is the lowest temperature.
Step-by-step explanation:
(45°C × 9/5) + 32 = 113°F
(-55°C × 9/5) + 32 = -67°F