Dhanu has a model railway.
(a) He has a train that consists of locomotive and 4 coaches. The mass of the locomotive is 87 g
and the mass of each coach is 52 g.
i) Work out the total mass of the train.
Multiply the following using the vertical multiplication method:
x² + 5x+1
x3x2 - 2x + 4
3) The elevator in a large office building is not working so you start climbing the stairs. The first flight
takes you 56 seconds. The second flight takes you 62 seconds. The third flight takes you 68 seconds.
If you climb a total of ten flights, how long will it take you to climb all ten flights combined?
a.
b.
C.
1660 seconds
830 seconds
330 seconds
105 seconds
6 seconds
d.
e.
Answer:
Oct 20, 2019 — So how many flights does it takes for stair climbing to qualify as a workout? ... the Harvard Alumni Health study reported that climbing 10-19 flights a week (two ... But to be clear, we're not talking about the type of stair climbing you do ... of 20 seconds (about 60 steps) or a single/double flight of stairs that ca
Step-by-step explanation:
Faucet filled 2gallon pot in 5/6 minute how many gallons in minute
Answer:
12/5 gallons/minute, or 2 2/5 gallons/minute
Step-by-step explanation:
Find the unit rate with time as the independent variable:
2 gallons
---------------- = 12 gallons / 5 minutes = 12/5 gallons/minute
5/6 minute
Answer:
.41666 or 5/12 Gallons per minute
Step-by-step explanation:
5/6 divided by 2
Julissa earns $13 per hour. If her regular hours are 40 hours per week, and she receives double time overtime,
find her total pay for a week in which she works 45 hours.
Answer:
1,040 dollars
Step-by-step explanation:
On your paper, construct a rectangle on a coordinate plane that satisfies these criteria.
• The sides of the rectangle are either vertical or horizontal.
• The perimeter of the rectangle is 42 units.
• Each of the vertices lies in a different quadrant.
What are the coordinates of the vertices of your rectangle? Explain how you know the perimeter of your rectangle is
42 units
Answer:
[tex]A = (5,3)[/tex]
[tex]B = (-5,3)[/tex]
[tex]C = (-5,-8)[/tex]
[tex]D = (5,-8)[/tex]
Step-by-step explanation:
Required
[tex]Perimeter = 42[/tex]
Construct a rectangle whose perimeter is 42 units and satisfies the given conditions.
First, name the rectangle ABCD.
Such that:
[tex]A = (x_1,y_1)[/tex]
[tex]B = (x_2,y_2)[/tex]
[tex]C = (x_3,y_3)[/tex]
[tex]D = (x_4,y_4)[/tex]
For the rectangle to be either horizontal or vertical, then:
[tex]y_1 = y_2[/tex] and [tex]y_3 = y_4[/tex]
We have that:
[tex]Perimeter = 42[/tex]
Replace perimeter with its formula
[tex]2(AB + BC) = 42[/tex]
Divide both sides by 2
[tex]AB + BC = 21[/tex]
This implies that, the distance between adjacent sides (through the edges) must be equal to 21
Having said that: a set of coordinates that satisfy the given conditions are:
[tex]A = (5,3)[/tex] -- First quadrant
[tex]B = (-5,3)[/tex] -- Second quadrant
[tex]C = (-5,-8)[/tex] -- Third quadrant
[tex]D = (5,-8)[/tex] -- Fourth quadrant
The above quadrants satisfy the condition:
[tex]y_1 = y_2[/tex] and [tex]y_3 = y_4[/tex]
HOW TO KNOW THE PERIMETER IS 42
To do this, we simply calculate the distance between the edges and add them up
Distance is calculated as:
[tex]D = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2[/tex]
For AB
[tex]A = (5,3)[/tex]
[tex]B = (-5,3)[/tex]
[tex]D_1 = \sqrt{(5 - (-5))^2 + (3 - 3)^2}= \sqrt{(10)^2 + (0)^2} = \sqrt{100} = 10[/tex]
For BC
[tex]B = (-5,3)[/tex]
[tex]C = (-5,-8)[/tex]
[tex]D_2 = \sqrt{(-5 - (-5))^2 + (3 - (-8))^2}= \sqrt{(0)^2 + (11)^2} = \sqrt{121} = 11[/tex]
For CD
[tex]C = (-5,-8)[/tex]
[tex]D = (5,-8)[/tex]
[tex]D_3 = \sqrt{(-5 -5)^2 + (-8 - (-8))^2}= \sqrt{(-10)^2 + (0)^2} = \sqrt{100} = 10[/tex]
For DA
[tex]D = (5,-8)[/tex]
[tex]A = (5,3)[/tex]
[tex]D_4 = \sqrt{(5 -5)^2 + (-8 -3)^2}= \sqrt{(0)^2 + (11)^2} = \sqrt{121} = 11[/tex]
So, the perimeter is:
[tex]P = D_1 + D_2 + D_3 + D_4[/tex]
[tex]P = 10 + 11 + 10 +11[/tex]
[tex]P = 42[/tex]
See attachment for rectangle
Pls help asap!(this question is worth 20 points!)picture down below says question
Answer:
138
Step-by-step explanation:
c=5
d=4
6c^2-5d+8
substitute c & d
6(5)^2-5(4)+8
6(25)-20+8
150-20+8 = 138
In which step did Viet make an error?
Answer:
Step 1
Step-by-step explanation:
When moving the 4 to the other side, Viet was supposed to subtract 4 from each side, leaving 0 on the left, and 102-4 on the other side. 102-4=98, not 106. Viet added when he was supposed to subtract.
READ AND ANALYZE THE PROBLEM. ANSWER
EACH QUESTION
Below.
AT IMER'S GROCERY STORE. PRIDE POWDER
SOAP A
6 PIECES SACHET SELL PHP 28.50
How much tHE COST of EACH SACHET?
1. WHAT IS ASKED? _______
2. WHAT ARE GIVEN FACTS?_____
3.WHAT OPERATION TO BE USED?_____
4. WHAT IS THE NUMBER OF SENTENCE? _______
5. SOLVE, LOOK BACK AND LABEL Your
CORRECT ANSWER. . _____
Answer:
4.75 if you don't have to convert it to US dollars.
Step-by-step explanation:
1. The question is asking how much is the cost of each sachet.
2. One given fact is that 6 pieces of a sachet cost 28.50.
3. Division.
4. Can't tell if you're asking for the equation but 28.50 / 6 = 4.75. Or do 28.50 / 6 = c
5. 4.75.
If they're asking you to convert it into united states dollars:
1. It's asking how much is the cost of each sachet.
2. One given fact is that 6 pieces of a sachet cost 28.50.
3. Division.
4. Can't tell if you're asking for the equation but 28.50 / 49 = 0.58163265306 (0.59 if you round it) Or do 28.50 / 49 = c
5. 0.59.
Tbh I just used g00gle and converted philiphine pesos to USD (United States) dollars, if it's not right, then sorry-
Hope this helped!!
In August, a grocery store averaged about 620 customers per day. In September, the average number of customers per day at the store was 1075. What was the approximate percent increase in the average number of customers per day from August to September?
255%
73%
70%
59%
Point M is located at (7,1).
What is located 5 units from point M?
Choose 1 answer:
(Choice A)
Point A
(Choice B)
Point B
(Choice C)
Point C
(Choice D)
Origin
I think it is possibly point b
saben cual es la raiz cuadrada de 3025 con metodo de aproximaciones sucesivas
Answer:
which language is this
F(x) = 3 + 4x G(x) = 6x + 7
I) find fg(x)
Answer:
See the attached document
I need help grades due tomorrow in a little
Answer:
3) Each cookie costs $2.75
Step-by-step explanation:
That statement is true based on the graph.
what's the answers to this question? help pls
Answer:
answer: B
Step-by-step explanation:
brainliest pls
I need help asap
I will need help finding a and b
Answer:
(a) [tex]s = 2.56[/tex]
(b) [tex]s = 1.71[/tex]
Step-by-step explanation:
Given
Tables (a) and (b)
Required
Determine the standard deviation
For (a):
[tex]\bar x = 11.5[/tex] --- mean
The standard deviation is calculated as:
[tex]s = \sqrt{\sum np(1-p)}[/tex]
This gives:
[tex]s = \sqrt{5*0.1*(1-0.1) +10 * 0.5 * (1 - 0.5) + 15 *0.4*(1-0.4) }[/tex]
[tex]s = \sqrt{5*0.1*0.9 +10 * 0.5 * 0.5 + 15 *0.4*0.6 }[/tex]
[tex]s = \sqrt{6.55}[/tex]
[tex]s = 2.56[/tex]
For (b):
[tex]\bar x = 4.4[/tex] --- mean
The standard deviation is calculated as:
[tex]s = \sqrt{\sum np(1-p)}[/tex]
This gives:
[tex]s = \sqrt{1*0.2*(1-0.2) +3 * 0.3 * (1 - 0.3) + 5 *0.1*(1-0.1) + 7*0.4*(1-0.4)}[/tex]
[tex]s = \sqrt{1*0.2*0.8 +3 * 0.3 * 0.7 + 5 *0.1*0.9 + 7*0.4*0.6}[/tex]
[tex]s = \sqrt{2.92}[/tex]
[tex]s = 1.71[/tex]
What is 65% of 568 ?
Answer:
8
Step-by-step explanation:
568÷65=8
Answer:
369.2
Step-by-step explanation:
65% of 568
= 65/100 x 568
=36920/100
=1846/5
=369.2
Given the equation of a line: y = 3x - 7. Select the equation of the line PERPENDICULAR to this line
Options:
y = (1/3)x + 1/7
y = -3x + 7
y = (-1/3)x - 7
y = 3x + 2
Answer:
The third option, y=(-1/3)x-7
Step-by-step explanation:
To find a line perpendicular to an equation, you find the negative reciprocal of the slope. For instance, if you have an equation y=4x+5, the negative reciprocal is y=(-1/4)x+5. That is the equation to find a line perpendicular to this.
If you want to find a line parallel to the equation y=4x+5, all you have to do is come up with another equation that has the same slope. So, y=4x+8 would be a line parallel to the equation y=4x+5.
De acuerdo a la siguiente imagen, selecciona la opción que muestre la operación que permite llegar al número encerrado en color rojo.
Answer:
2?
Step-by-step explanation:
I think im wrong/ creo que estoy mal?!
A circular garden is being designed so that it has a diameter of 15 feet. Fencing needs to be
put up around the garden at a cost of $2.75 per foot of fencing. Fencing can only be bought
in whole feet lengths.
(a) How many feet of fencing should be bought? (b) How much will the fencing cost?
Answer:
15 feet and the cost is $41.25
Step-by-step explanation:
someone answer this please
Answer:
D) -4(-1) > 2 is a true statement
Step-by-step explanation:
A) 3 < 0 False
B) -6 > -1 False
C) 0 < -4 False
What is 7a - 9> 2 (4a + 1)
Answer:
a<-11
Step-by-step explanation:
WHY DOES NO ONE REPLY TO MY Q"S!!!!!!
In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 57 acres. Suppose we randomly survey 41 farmers from 1940.
Answer:
117 is the smaller value and 231 is the larger value
Step-by-step explanation:
Standard deviation is 57
Middle 50% is average and one standard deviation to each direction
So if the average is 174
174 - 57 is 117
174 + 57 is 231
What is the distance, in units, between A(-4,-4)and (0,-2)
Answer:
2√5 ≅ 4.47
Step-by-step explanation:
can someone please help my question is the sum of six and c
Answer: i dont know
Step-by-step explanation:
In need of help thanks
Step-by-step explanation:
x = 20
y = 25
z = 24
plz mark my answer as brainlist plzzzz vote me also.
hope this will be helpful to you .
Answer:
x = 20
y = 25
z = 24
Step-by-step explanation:
2y + 10 = 60
2y = 50
y = 25
2y + 10 = 3x
but y = 25
=> 50 + 10 = 3x
3x = 60
x = 20
5z + 3x = 180
but x = 20
5z + 60 = 180
5z = 120
z = 24
please give me brainlist if it is helpful for you
17 = x + 9
Whats the answer i need it now pls && thank uu .
Answer:
x=8
Step-by-step explanation:
subtract 9 from 17 to get x alone on one side. 17-9=x+9-9. That will equal 8=x. Hope this helps
Answer:
hello !
x = 8
transpose nine to isolate x:
17 - 9 = x
8 = x
Solve The systems of equation using any method
4×+3y=2 3x-3y=-9
The length of a rectangle is 2 inches more than twice its width. Write an equation relating the length / of the rectangle to its width w.
Answer:
l = 2w + 2 would be the equation
The top missing part of the screenshot says : Every year, a dog sled race is held in Alaska and is approximately 1,150 miles in distance. Information about the top three racers is listed below.
Answer:
-The equation that represents the approximate distance Aaron's dog sled team travels over time is Y = 5.32X.
-The equation that represents the approximate distance Dallas' dog sled team travels over time is Y = 5.48X.
-The equation that represents the approximate distance Mitch's dog sled team travels over time is Y = 5.42X.
Step-by-step explanation:
Given that every year, a dog sled race is held in Alaska and is approximately 1,150 miles in distance, based on the listed information, the speed rate of every racer is:
Aaron = 575 miles in 4 days and 12 hours = 575 miles in 108 hours = 5.32 mph
Dallas = 1,150 miles in 8 days and 18 hours = 1,150 miles in 210 hours = 5.476 mph
Mitch = 287.5 miles in 2 days and 5 hours = 287.5 miles in 53 hours = 5.42 mph
Therefore, the correct answers are:
-The equation that represents the approximate distance Aaron's dog sled team travels over time is Y = 5.32X.
-The equation that represents the approximate distance Dallas' dog sled team travels over time is Y = 5.48X.
-The equation that represents the approximate distance Mitch's dog sled team travels over time is Y = 5.42X.