If the nth term of a number sequence is 3n²
find the first 3 terms and the 10th term.
Answer:
Step-by-step explanation:
3(1)^2 = 3
3(2)^2 = 12
3(3)^2 = 27
3(10)^2 = 300
A market research firm studied the waiting time to order drinks during breakfast time at drive-thru in two coffee shop chains. For a sample of 30 locations of chain A, the sample standard deviation of waiting time was 21.2 seconds, and for a sample of 28 locations of chain B, the sample standard deviation was 31.4 seconds. Do these data suggest that the waiting time is more consistent in chain A
Answer:
Yes
Step-by-step explanation:
Given that :
CHAIN A:
Sample size n1 = 30
Sample standard deviation of waiting time s1 = 21.2
CHAIN B:
Sample size, n2 = 28
Sample standard deviation of waiting time s2 = 31.4
Null hypothesis H0: s1 = s2
Alternative hypothesis H1: s1 < s2
Test statistic ; Ftest : s1² / s2²
Ftest = 21.2^2 / 31.4^2
= 0.4558399
P value from F statistic : = 0.02 (using p value calculator)
Since the pval < 0.05
Then we reject the Null ; Chain A waiting time is more consistent
An airplane is flying at a constant speed, described by the equation d=575t, where d represents the distance, in miles, that the airplane travels at this speed in t hours.
What does the 575 tell us in this situation?
How many miles does the airplane travel in 2 hours?
Answer:
nope
Step-by-step explanation:
Answer:
1150 distance traveled in 2 miles
Step-by-step explanation:
575+575 for 2 miles
1150 distance traveled
HELP!!
Construct the graph of the direct proportion y=kx for k= -1
Simple answer.
-1 x 3 = -3
3 is your x and -3 is your y.
if 10 milligrams are contained in 2 milliters, how many milligrams are contained in 28 milliliters
Answer:
140
Step-by-step explanation:
If there is 10 milligrams for 2 milliliters that means, for ever 1 milliliter there is 5 milligrams. So all we have to do is multiply amount of milliliters by 5. So 28x5=140
Pleas Mark Brainliest
Brandon answered 21 of the 25 questions on his history test correctly. What decimal represents the fraction of problems he answered incorrectly?
Answer:
.84
Step-by-step explanation:
21/25 = .84
HELPPPPPPPPPPPPPPPPPPPPPPPPPPP
14x - 9 + 8x + 3 = 9x - 8 - 3x - 14
One Solution
Infinitely Many Solutions
No Solution
Answer:
[tex]\large\boxed{\text{One solution.}}[/tex]
14x - 9 + 8x + 3 = 9x - 8 - 3x - 14
Combine like terms:
14x + 8x - 9 + 3 = 9x - 3x - 8 - 14
22x - 6 = 6x - 22
Subtract 6x from both sides:
22x - 6x - 6 = 6x - 6x - 22
16x - 6 = -22
Add 6 to both sides:
16x - 6 + 6 = -22 + 6
16x = -16
Divide both sides by 16:
16x/16 = -16/16
x = -1. There is only one solution to this equation.
Answer:
Step-by-step explanation:
Here you go mate
Step 1
14x-9+8x+3=9x-8-3x-14 Equation/Question
Step 2
14x-9+8x+3=9x-8-3x-14 Simplify
22x-6=6x-22
Step 3
22x-6=6x-22 Subtract 6x from the sides
16x-6=-22
Step 4
16x-6=-22 Subtract -6
16x=-16
Step 5
16x=-16 Divide both sides by 16
-1
Answer
x=-1
One Solution
American Sign Language
In general, Deaf culture is more open about honestly expressing emotion than other cultures.
a. True
b. False
Answer:
false ignore this I needed to write something else to hand it in
Max and Sasha exercise a total of 20 hours each week. Max exercises 15 hours less than 4 times the
number of hours Sasha exercises. The system of equations shown below represents this situation, where
x represents the number of hours Max exercises and y represents the number of hours Sasha exercises.
How many hours do Max and Sasha exercise per week?
(x + y = 20
x - 4y =-15
Max exercises
hours a week and Sasha exercises
hours a week.
Answer:
Max exercises 13 hours a week, and Sasha 7.
Step-by-step explanation:
To find the number of hours each of them exercises during the week, we solve the system of equations.
In the second equation:
[tex]x = 4y - 15[/tex]
Replacing in the first equation:
[tex]x + y = 20[/tex]
[tex]4y - 15 + y = 20[/tex]
[tex]5y = 35[/tex]
[tex]y = \frac{35}{5}[/tex]
[tex]y = 7[/tex]
So Sasha exercises 7 hours per week.
Max:
[tex]x + y = 20[/tex]
[tex]x + 7 = 20[/tex]
[tex]x = 13[/tex]
Max exercises 13 hours a week.
Two Identical Buildings stand parallel on opposite sides of a road. Find the angle of depression from A to B
Answer:
8.7°
Step-by-step explanation:
The above problem can be represented by a right angled triangle with height of 7 m, hypotenuse = AB.
The base of the triangle is gotten by finding the diagonal of the road. That is using Pythagoras theorem:
base² = 43² + 15²
base² = 2074
base = 45.54 m
Using trigonometric function to find angle A:
tan(A) = base / height
tan(A) = 45.54 / 7
tan(A) = 6.506
A = tan⁻¹ (6.506)
A = 81.3°
Angle of depression = 90° - A = 90 - 81.3
Angle of depression = = 8.7°
At a party there are 30 students over age 21 and 20 students under age 21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed: what is that chance
Answer:
10%
Step-by-step explanation:
According to the scenario, given data are as follows:
Students over age 21 = 30
Students under age 21 = 20
Choose student over age 21 = 3
Choose student under age 21 = 2
So, we can calculate chances by using following method,
Chances of student over age 21 = Number of choose student ÷ Total students
= 3 ÷ 30 = 0.10 = 10%
Similarly, Chances of student under age 21 = Number of choose student ÷ Total students
= 2 ÷ 20 = 0.10 = 10%
Hence, in both condition, chances are 10%.
Look at the linear equation graphed below. If x=12, what value of y is a solution to this equation?
A)1
B)2
C)27
D)18
Answer:
B) 2
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
Determine the relationship between the two triangles and whether or not they can be proven to be congruent
Answer:
The two triangles are related by AAS, so the triangles are congruent.
Step-by-step explanation:
Two angles and a non-included side of one triangle are congruent to corresponding two angles and an included side in the other triangle. Therefore, we can conclude that the two triangles are related by the AAS Congruence Criterion. Hence, both triangles congruent to each other.
what is the equation in slope-intercept form, of the line prependicular to y= -3/5x +6 that passes through the point with coordinants (12,25)
Answer:
y=5/3x+5
Step-by-step explanation:
change slope in equation given to the negative reciprocal since the line is perpendicular:
-3/5 to 5/3
put values into point slope form y-y1=m(x-x1)
y1 = y in the point given, which is 25
m = slope, which is 5/3
x1 = x in point given, which is 12
y-25=5/3(x-12)
then solve for slope intercept form y=mx+b to get
y=5/3x+5
What is the measure of 2X?
х
1240
Select the best answer from the choices provided.
A.56
B.66
C.114
D.124
Please help me. I have no idea what to do!!
Answer:
It's the first option.
Step-by-step explanation:
It is turned down so the one half is negative (-1/2)
parabola will be in the form of a(x-h)^2 + k. (-h, k) is your vertex, in this case that is (15,25). so in the equation, you will have
-1/2(x-15)^2 + 25. first one.
Hope this helps!
On Saturday moming, Owen earned $27. By the end of the afternoon he
had earned a total of $60. Enter
an equation, using x as your variable, to determine whether Owen earned $33 or $37 on Saturday
afternoon.
A pair of jeans is on sale 20% off. The sale price is $32. What is the regular price?
8 units to the left of five
Cali bought a sweater priced a $60. If the sales tax is 9% what is the total purchase price of the sweater?
Answer:
65.4
Step-by-step explanation:
60*.09 = 5.4
60+5.4 = 65.4
3х + 5 + 2х
Simplifying variable expressions
Answer:
3
х
+
5
+
2
х
5
х
+
5
Solution
5
х
+
5
Step-by-step explanation:
Help pls thank u 48 points
Answer: x = -160/7
You're welcome!!!
ANSWER ASAP PLEASE!! CORRECT ANSWER WILL GET BRAINLIEST!
Professor Duncan decided to use a curve to grade a recent test. The lowest score out of 100 was 35 and the highest score was 65. He used the function n(g)=1.2g+3, where n(g) is the curved test score and g is the original test score. Which is the range of the curved test scores?
A. 35 to 65
B. 42 to 78
C. 45 to 81
D. 46 to 82
Answer:
C
Step-by-step explanation:
Hope it helps!!
What is the equation of the line that contains point (6, 4) and is parallel to line m?
A) y=-2x+16
B)y=2x-8
C)y=-1/2x+7
D)y=1/2x+1
PLEASE HELPPP !!
Answer:
d?.............................
What is the sum of 2/11’ 2/7’ and 1/11’?
roman spent $24 of the $30 in his wallet. What percent represents the fraction of $30 james spent
Genie has 100 feet of fence with which to make a rectangular cage for her rabbit. If she uses the wall of her house as one side
Answer:
-2(15)²+100(15) = -450+1500 = 950 ft²Step-by-step explanation:
(she has enough fence for this) I hope it's help you10, 7, 4, 1, -2 common ratio
Answer:
Step-by-step explanation:
common ratio is -3
10-3=7
7-3=4
4-3=1
etc
Answer:
-3
Step-by-step explanation:
common ratio=a2-a1=7-10=-3
What’s the answer pls