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2 years ago

What are the answers to the questions? Picture Below.

Mathematics

2 answers:

velikii [3]2 years ago

6 0

Step 1: Distributive Property
Step 2: Commutative Property
And I think Step 3 & 4 is Associative Property

lord [1]2 years ago

4 0

See the picture for my answers.

1. The Distributive Property lets you apply an external factor inside parentheses.

2. The Commutative Property lets you swap the order of operands. 10x and -5y

3. The Associative property lets you change the association of terms with each other.

4. The commutative Property lets you swap the order of operands (12x-5y) and 10x

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Which equation is true?<br> A) 4/-9=-4/9<br> B) 4/-9=2/-3<br> C) 4/-9=4/9<br> D) 4/-9=2/3

prisoha [69]

The answer is B, 4/-9 = 2/-3

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2 years ago

In Ellen's math class, there were 2 boys to every 3 girls. Which of the following could be the ratio of girls to boys in the cla

FinnZ [79.3K]

Answer:

A . 17/21

B . 14/21

C . 7/14

D. 11/17

Step-by-step explanation:

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2 years ago

Read 2 more answers

A pyramid-shaped hip roof is a good choice for a house in an area with many hurricanes. What is the volume of the roof to the ne

Lubov Fominskaja [6]

The volume of the roof is 10667 cube feet and the volume of the entire house, including the roof, is 58667 cube feet.

<h3>How to find the volume of the composite figures?</h3>

To find the volume of the composite figures, follow the steps listed below:,

Separate the figure.
Calculate the volume of each figure by which the composite figure is made of.
Add the volume of all the individual figures to get the total volume of composite figures.

A pyramid-shaped hip roof is a good choice for a house in an area with many hurricanes. The volume of the roof is:

$V=\dfrac{1}{3}(\text{length x width x height})\\V=\dfrac{1}{3}40\times40\times20\\V\approx10667\rm\; ft^3$

The volume of the room is:

V=length x width x height

V=40 x 40 x 30

V=48000 ft³

The volume of the entire house, including the roof, is,

V=10667+48000

V=58667 ft³

Thus, the volume of the roof is 10667 cube feet and the volume of the entire house, including the roof, is 58667 cube feet.

Learn more about the volume of composite figures here;

brainly.com/question/1205683

#SPJ1

7 0

1 year ago

A particular curve is represented parametrically by x=cost, y=−sint, t∈[0,2π]. (a) As t increases on [0,2π], in which direction

cestrela7 [59]

Answer:

a) clockwise sense

b) x² + y² = 1

c) y ∈ [0,1]

Step-by-step explanation:

a) x = cos (t) y = -sin (t)

for t ∈ [ 0 , 2π ]

for t = 0 point P is x = cos (0) = 1 y = -sin (0) y = 0

The point is on the x axis

Now let´s see what happens for t = π/4

x = cos (π/4) x = √2/2 and y = - sin (π/4) y = - √2/2

Note π/4 is 45°

The coordinates of the new point P ´(t = π/4) are in the fourth quadrant

that means the point is moving clockwise sense.

b) x = cos(t)

y = -sin(t)

Squaring on both sides of each equation we get:

x² = cos²t

y² = sin²(t)

Adding side by side

x² + y² = cos²t + sin²t

x² + y² = 1

Values for y are y ( 0 , 1)

8 0

2 years ago

A scout troop 32 markers along a hiking trail. Each Microway is 9 ounces. On the scale to begin the hike, they put the markers i

Natali5045456 [20]

Answer:

The backpack weighs 21 pounds with all the markers in it.

Step-by-step explanation:

Since they bring 32 markers and each marker is 9 ounces, the weight of all the markers is 288. We know 288 ounces is 18 pounds, so we add 18 to 3. So the backpack weighs 21 pounds with all the markers in it.

6 0

2 years ago