Asked by Racheal

An open concrete tank is internally 1m wide, 2m long and 1.5m deep, the concrete being 10cm thick. Calculate
a) The capacity of the tank in litres.
b.) The volume of concrete used in metres cube
Answered by oobleck
recall that 1L = 1000cm^3
(a) v = 100*200*150 cm^3
(b) Assuming no top, v = (100+20)*(200+20)*10 + 2((100+10)+(200+10))*150*10 cm^3 minus the volume from (a)

watch the units
Answered by Emma
3000 litres and 1.224m³
Answered by )=(waffle)=(
Identify the unit rate shown in the graph.
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1 point
Captionless Image
15 gallons per mile
15 miles per gallon
8 miles per gallon
8 gallons per mile
Answered by )=(waffle)=(
Ruth bought a piece of farm machinery valued at $50,000. Over a period of 10 years, the machinery lost value at a constant rate. The graph below models this loss of value.
Which statement most closely matches this relationship?
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1 point
Captionless Image
The machinery ages 3 years for every $10,000 loss in value.
The machinery ages 5 years for every $10,000 loss in value.
Each year, the machinery loses a value of $4,500.
Each year, the machinery loses a value of $2,500.
Answered by )=(waffle)=(
Which of the following is a graph of y = 3/2 x^2?
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1 point

Option 1

Option 2

Option 3

Option 4
Answered by )=(waffle)=(
The table shows the amount of money Angelica earned based on the number of hours she worked.

Angelica's Pay

Hours Worked (h) Amount Earned (A)
3 $22.50
8 $60.00
15 $112.50
Which equation best represents Angelica's pay?
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1 point
A = 7.50h
A = 22.50h
A = h + 7.50
A = h + 22.50
Answered by )=(waffle)=(
Which equation is true for all x- and y- values in the table below?


x y
1 7
2 14
3 21
4 28
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1 point
y = x + 7
y = x – 7
y = x /7
y = 7x
Answered by )=(waffle)=(
Point A(4, 2) is translated according to the rule (x, y) right arrow (x + 1, y – 5) and then reflected across the y-axis.
In which quadrant of the coordinate plane is point A located?
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1 point
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
Answered by )=(waffle)=(
Point A(4, 2) is translated according to the rule (x, y) right arrow (x + 1, y – 5) and then reflected across the y-axis.
What are the coordinates of translated point A’? In which quadrant of the coordinate plane is point A’ located?

*
1 point
A’(5, −3); Quadrant II
A’(5, −3); Quadrant IV
A’(-5, 3); Quadrant IV
A’(-5, 3); Quadrant II
Answered by )=(waffle)=(
Point A(4, 2) is translated according to the rule (x, y) right arrow (x + 1, y – 5) and then reflected across the y-axis.
Using Answer from previous question.
What are the coordinates of reflected point A’’? In which quadrant of the coordinate plane is point A’’ located?

*
1 point
A’’(5, 3); Quadrant III
A’’(−5, −3); Quadrant III
A’’(5, 3); Quadrant I
A’’(−5, −3); Quadrant I
Answered by )=(waffle)=(
Can the figure below tessellate a plane?
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1 point
Captionless Image
yes
no
sometimes
it depends on the plane
Answered by )=(waffle)=(
What is the sum of verteces of the internal angles in a tessellation?
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1 point
90 degrees
120 degrees
180 degrees
360 degrees
Other:
Answered by )=(waffle)=(
The coordinates of an ordered pair have opposite signs. In which quadrant(s) must the ordered pair lie?
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1 point
Quadrant I & II
Quadrant II & III
Quadrant III & IV
Quadrant I & III
Quadrant II & IV
Other:
Answered by )=(waffle)=(
Look at the shaded triangle in the drawing below. Describe in detail the transformations needed to create the rest of the square design. You can use a combination of translations, reflections, and rotations of the shaded triangle (Figure I) to create the square design.
What would not be a possible first step?
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1 point
Captionless Image
Rotate Figure I 90 degrees clockwise about the origin
Rotate Figure I 90 degrees counterclockwise about the origin
Reflect Figure I over the y axis
Reflect Figure I over the x axis
Other:
Answered by )=(waffle)=(
Look at the shaded triangle in the drawing below. Describe in detail the transformations needed to create the rest of the square design. You can use a combination of translations, reflections, and rotations of the shaded triangle (Figure I) to create the square design.
True or False - I would be able to use translations to complete my square design.
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1 point
Captionless Image
True
false
Answered by )=(waffle)=(
Look at the shaded triangle in the drawing below. Describe in detail the transformations needed to create the rest of the square design. You can use a combination of translations, reflections, and rotations of the shaded triangle (Figure I) to create the square design.
What would be a possible second step?
Select all appropriate answer options.
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2 points
Captionless Image
Rotate Figure I 90 degrees clockwise about the origin
Rotate Figure I 90 degrees counterclockwise about the origin
Reflect Figure I over the y axis
Reflect Figure I over the x axis
Answered by )=(waffle)=(
Which ordered pair is not a solution of y = –12x – 3?
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1 point
(8,-98)
(-3,33)
(-9,105)
(3,-39)
Answered by Bot
8 miles per gallon
Answered by Bot
Each year, the machinery loses a value of $4,500.
Answered by Bot
Option 2
Answered by Bot
A = 7.50h
Answered by Bot
y = 7x
Answered by Bot
Quadrant IV
Answered by Bot
A’(5, −3); Quadrant IV
Answered by Bot
A’’(-5, -3); Quadrant II
Answered by Bot
no
Answered by Bot
360 degrees
Answered by Bot
Quadrant II & IV
Answered by Bot
Rotate Figure I 90 degrees counterclockwise about the origin (because it would not overlap any side of the triangle with one of the sides of the rectangle).
Answered by Bot
True.
Answered by Bot
Rotate Figure I 90 degrees clockwise about the origin, Reflect Figure I over the x axis.
Answered by Bot
(-9,105)