The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
SpeedSpeed is the ratio of total distance travelled to total time taken. It is given by:
Speed = distance / time
Let t₁ represent the time upstream and t₂ the time downstream while a represent the average speed of the canoe in still water.
Hence:
t₁ + t₂ = 4 (1)
Also:
(a - 1)t₁ = 3 (2)
(a + 1)t₂ = 3 (3)
The equation used to find the average speed is (a - 1)t₁ = 3, (a + 1)t₂ = 3 and t₁ + t₂ = 4.
Find out more on speed at: https://brainly.com/question/4931057
Factorise the expressions and divide them as directed.
Ok. These are the answers. Tell me if you didm't understand my writing.
What is the next number in the sequence -16, -6, 4, 14
Answer
24
Step-by-step explanation:
you are adding by 10
-16+10=-6
-6+10=4
4+10=14
14+10=24
A figure with 6 edges.
How many edges does this figure have?
It has
edges.
Hexagon has six edges. The figure you're trying to figure out is hexagon I guess.
The polygons are similar. but they are not necessarily drawn to scale. Find the value of x
Answer:
x=9
Step-by-step explanation:
Since the polygons are similar, the ratios of their respective sides are equal.
32/24=(x-1)/6
x-1=8
x=9
hi pls send help
-
brainlist to best answer
Answer:
C
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Hi!
We will have to plug everything in to solve this!
So...
A. -3 * 2 > 6
-6>6 (WRONG)
B. 2 * 2 > 6
4>6 (WRONG)
C. 3 * 2 > 6
6>6 (WRONG)
D> 5 * 2 > 6
10>6 (CORECT)
Hope this helps :)
P.S. the star (*) stands for the multiplication sign!
AD is the perpendicular bisector of BC.
BD = 5x – 10 and DC = 3x + 10.
Determine the value of x.
5x-10= 3x+10
5x-3x= 10+10
2x÷2= 20÷2
x= 10
Step-by-step explanation:
as AD bisects them they will be two equal parts so
5x-10=3x+10
5x-3x=10+10
2x=20
divide both sides by 2 and
x=10
Esther works for a marketing company. She earns $12 per hour, and she gets a $50 travel allowance every month. Which linear equation could be used to find her monthly pay rate?
Complete the explanation for how you could find the number of seconds in one full 24-hour day-
Then solve.
You would multiply 24 hours by _____ minutes and then multiply my answer by _____
Seconds.
There are ____ seconds in one full day
Answer:
Step-by-step explanation:
You would multiply 24 hours by 60 minutes and then multiply my answer by
60 Seconds.
There are 86400 seconds in one full day
Which of the points shown below are on the line given by the equation y = 2x?
Check all that apply
The map of a trail is shown below. Find the value of x.
16+23=39
180-39=151
Answer:
151
(7) Kade purchased 2 gallons of chocolate milk. Malia purchased 6 quarts of chocolate milk. How much more chocolate milk?
Giving everything. Plzz help.
The answer in this picture is B(143)
Answer:
A
Step-by-step explanation:
180 _80 =100
180_65= 115
180_72 = 108
Then :
108 + 115 + 100 = 323
Then :
360 _ 323 = 37
Then :
180 _37 = 143
X _7 =143
X =150
HELP ME PLEASE!!!!
I WILL GIVE BRAINLIST!!!!
Answer:
1/6
Step-by-step explanation:
assistance with trying to figure out how to solve this question.
Answer:
137.24 mm²
Step-by-step explanation:
Big square = 9x9=81
Small rectangle at bottom = 2x3=6
Quarter Circle = 1/4(3.14)(8)(8)=50.24
81+6+50.24=137.24
Question38 ASAP pleaseee
Answer:
b
Step-by-step explanation:
The respiratory system basically help us breathe.
Find the range of the data.
6, 8, 14, 4, 26, 24, 2, 4, 18, 9
You need to buy enough sand to fill a sandbox to the top. The sandbox is modeled by the right rectangular prism in the diagram. How much sand do you need to buy?
A) 69 cubic feet B) 70 cubic feet Eliminate C) 79 cubic feet D) 80 cubic feet
Answer:
D is the best choise
Step-by-step explanation:
Which statement describes the system of equations?
(5x-3y – 34
lx-2y-4
O It has infinitely many solutions.
It has no solution,
24 14
O It has one solution | 1313
1-13)
O It has one solution (8, 2).
Answer:
D. (8,2)
Step-by-step explanation:
It has one solution =)
8k + 4 - 11k + 9 show work please
Answer:
8+4−11+9
8+13−11
8+13−11
−3+13
^^^
Step-by-step explanation:
Sam wants to buy a watch that cost $188. This is $48 more than 4 times
he sved last month. How much dia he save last month? *
Answer:
$35
Step-by-step explanation:
188-48 gives you the 4x what he saved
140/4 gives you the total which is 35.
I need to do this class soon, please help me
Answer:
Step-by-step explanation:
18. x + 25 = 55
x = 30
19. 2x - 5 = 95
2x = 100
x = 50
20. 3x - 22 = 2x + 26
x - 22 = 26
x = 48
21. 3x - 18 + 105 = 180
3x + 87 = 180
3x = 93
x = 31
22. 19x + 17x = 180
36x = 180
x = 5
27(5) = 135
23. 5x + 40 + 2x = 180
7x + 40 = 140
7x = 140
x = 20
5(20) = 100
2(20) = 40
5(20) + 40 = 100 + 40 = 140
The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, , from this year is greater than or equal to the mean IQ score of new hires, , from last year. This year, 95 new hires took the test and scored an average of 112.2 points with a standard deviation of 14.0 . Last year, 70 new hires took the IQ test and they scored an average of 117.8 points with a standard deviation of 14.5 . Assume that the population standard deviation of the IQ scores from the current year and the last year can be estimated by the sample standard deviations, since the samples that are used to compute them are quite large. Is there enough evidence to reject the claim of the human resources department, at the 0.01 level of significance
Answer:
Step-by-step explanation:
Null hypothesis: [tex]\mathbf{H_o: \mu_1 \ge \mu_2}[/tex]
Alternative hypothesis: [tex]\mathbf{H_o: \mu_1< \mu_2}[/tex]
This type of test statistic is a z test statistics
1st 2nd
Sample mean x = 112.2 117,8
Standard deviation σ = 14.0 14.5
Sample size n = 95 70
Point estimate [tex]\bar x_1 - \bar x_2[/tex] = -5.60
Standard error [tex]\sigma_{x_1-x_2}= \sqrt{\dfrac{\sigma_1^2}{n_1} +\dfrac{\sigma_2^2}{n_2} }[/tex]
[tex]= \sqrt{\dfrac{14.0^2}{95} +\dfrac{14.5^2}{70} }[/tex] = 2.2509
Test statistics [tex]z=\dfrac{x_1 - x_2}{\sigma_{x_1-x_2}}[/tex] [tex]=\dfrac{112.2- 117.8}{2.2509}[/tex] = - 2.4878
P-value = 0.012
No, there is no enough evidence Since p-value is greater than 0.01.
classify the segment in each part below. only use the information given in the figure do not assume measures are equal unless the markings indicate they are
Answer:
i dont know i just need points for more questions sorry
Step-by-step explanation:
Caroline saves money in an arithmetic sequence: $350 the first year, another $550
the second, and so on. How much money does she save after 31 years?
Pat is walking to a restaurant 6 blocks away. Pat has walked 2 blocks in 7 minutes. How many more minutes to reach the restaurant?
Answer:
14 minutes
Step-by-step explanation:
6÷2=3
3×7-7=21
Use special right triangles.
Find the exact value of x and y.
18
30°
X = ?
y = ?
0.03858 *0.02 leaving your answer I’m a standard form
Answer:
0.0007716
Step-by-step explanation:
0.03858 × 0.02 = 0.0007716
58 points I need helpppp!
Answer:
14. x=30, y=15, z=165
15. x=10, y=25
Step-by-step explanation:
Answer:
1)
x= 30
y=15
z=150
2)
x= 10
y=25
Step-by-step explanation:
1)
2x+90+x=180
3x+90=180
x= 90/3=30
2y= x
2y=30
y= 30/2=15
2y+z= 180
30+z= 180
z= 150
2)
3x= 5x-20
5x-3x=20
x=20/2=10
2y+4y+ (5x-20) = 180
6y+30= 180
y= 150/6= 25
I hope im right!!
The length of a classroom is 43 feet. What is this measurement in yards and feet?
Answer: 43 ft = 14.333333 yd/and/or/43 ft = 14 yd 1 ft
Step-by-step explanation:
To convert a foot measurement to a yard measurement, divide the length by the conversion ratio.Since one yard is equal to 3 feet, you can use this simple formula to convert:
yards = feet ÷ 3
The length in yards is equal to the feet divided by 3.
Answer:14.3333 yards equals 43 feet 1 foot is equivalent to .333 yards
Step-by-step explanation:
is going to plant y vegetable seeds in one garden and 3y+8 vegetable seeds in another. How many seeds is Frank going to plant?
Answer:
4y + 8 vegetable seeds
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Terms/CoefficientsStep-by-step explanation:
We know that Frank has 2 gardens, one with y vegetable seeds and another with 3y + 8 vegetable seeds. If we are trying to find the total amount of seeds planted, we must add the 2 gardens together:
Garden 1: y
Garden 2: 3y + 8
Garden 1 + Garden 2 = Total veggie seeds
y + 3y + 8 = Total veggie seeds
Total veggie seeds = 4y + 8