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3 years ago

Match the descriptions of cross sections of three-dimensional figures to their corresponding shapes.

1 answer:

8 0

A slice of a right rectangular pyramid parallel to its basesince parallel to the base it should have the same figure to the base which is rectangle.
a slice of a right square pyramid perpendicular to its base but not through its top vortex. since not to the vortex, it will form a trapezoid
a slice parallel to the base of a right rectangular prism with a square basesince parallel to the base it should have the same figure to the base which is square

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Hi- I need help please to get my HS diploma...did not graduate :(

Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

first for the easy one : the curve line is dotted, if the line points are NOT part of the solution. and it is solid, if the points are included.

you know what the curve line indicates ? it indicates the points for which there is equality.

so, if there is a ">=" or "<=" relation, then that includes equality, and the curve is solid.

if there is only a true inequality ("<", ">"), then the curve is dotted, as the equality is not included.

so, I how this is now really clear.

in our case here (I suspect it really looks like this)

y + 4x <= x² + 2

we have a "<=" sign, so, the curve is ..., well ? ... well ? ...

well ? ... well ? ... solid !

and we still treat inequalities as much as possible as regular equalities.

so,

y <= x² - 4x + 2 (after subtracting 4x from both sides).

and now you see it, right ?

all y values that are smaller or equal to the quadratic expression.

SMALLER ! so, BELOW the curve (as the smaller y values are represented by the lower part of the y-axis).

4 0

2 years ago

5 to the fourth power times (5 to the negative 3rd power) and 2

VARVARA [1.3K]

What does the and 2 mean? Does it mean times two or plus two?

Step-by-step explanation:

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4 years ago

Are the following figures similar?

iris [78.8K]

Answer:

the answer is "D"

Step-by-step explanation:

3 0

3 years ago

Mrac [35]

Answer:

i feel like an astronaunt rolling deep

Step-by-step explanation:

4 0

3 years ago

The perimeter of a backyard basketball court with four sides is 90 feet. Two sides of the court are each 20 feet long. One side

Alex787 [66]

Given:

The perimeter of a backyard basketball court with four sides is 90 feet.

Two sides of the court are each 20 feet long.

One side of the court is 25 feet long.

To find:

The missing side length of the basketball court.

Solution:

Let x be the missing side length.

The three given sides of the basketball court are 20 feet, 20 feet, 25 feet.

We know that the perimeter is the sum of all sides.

$Perimeter=x+20+20+25$

$Perimeter=x+65$

The perimeter of a backyard basketball court with four sides is 90 feet.

$x+65=90$

$x=90-65$

$x=25$

Therefore, the missing side length is 25 feet and the correct option is B.

4 0

3 years ago