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DanielleElmas [232]
4 years ago
5

A contractor built a basement for a new home. The volume of the rectangular basement shown at the right is represented by the ex

pression 3x3+6x2-30x. If the height of the basement is 3x, what is the area of its base?

Mathematics
2 answers:
marishachu [46]4 years ago
8 0

Answer:

C. x^2+2x-10

Step-by-step explanation:

Volume of a Rectangular Prism = LWH

We have the height so we can simplify by dividing it out of the total volume

Then you get x^2+2x-10.

Since the area of the base is LW, that is your answer

elena-14-01-66 [18.8K]4 years ago
3 0
I did the math and the other answer is right !
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[(3 x 8) + 2?] + 6 - 2 Write out the steps Jayden will have to take in the yellow box? what are the steps?​
nlexa [21]

Answer:

[(3*8)+2]+6-2

PEMDAS

There are parentheses so solve what is in them

3*8=24

[24+2]

26+6-2

Do the addition

32-2

30 is your answer

30 steps

7 0
3 years ago
Find the distance from point A to point B.
Travka [436]

Answer:

8,6

Step-by-step explanation:

I moved up form A to the B and a to b was 8. And then from that it was 6. I realized I make no sense but yeah

5 0
3 years ago
a rectangular room is twice as long as its breadth and its peimeter is 540 m. find the number of bricks of size 20 cm ×12cm to p
balu736 [363]

Answer:

Step-by-step explanation:

breadth = x

length = 2x

Perimeter = 540m

2*( length + breadth ) = 540

2 *(2x + x) = 540

3x = 540/2

3x = 270

x = 270/3

x = 90 m

Breadth = 90m = 90 *100 = 9000 cm

Length = 2*90 = 180 m = 180 * 100 = 18000 cm

No.of bricks = Area of room/ area of one brick

= 9000 * 18000 / 20 * 12

= 675000 bricks

6 0
3 years ago
0.1x + 9 ≤ 45 what is x?
soldi70 [24.7K]
Hi Robles928518, 

0,1x + 9 ≤ 45
0,1x ≤ 45 - 9
0,1x ≤ 36
x ≤ 360

x ∈ ] - ∞ ; 360 ]
5 0
3 years ago
Read 2 more answers
in the game of hearts, four players are each dealt 13 cards from a deck of 52. is this a function? if so, what are the domain an
skelet666 [1.2K]

Based on the fact the game of hearts, four players are each dealt 13 cards from a deck of 52

  • The domain is the deck of 52 cards
  • codomain is 4 players
  • function, f(k) maps a card to each player
  • It is surjective

This is further explained below.

<h3>What is a surjective Function?</h3>

A surjective function is a kind of function that exists in mathematics that ensures that any element y may be transferred to element x in such a way that f(x) equals y.

To put it another way, each element that makes up the function's codomain is the mirror image of at least one element that makes up the domain.

Generally, function, f(k) maps a card to each player

And since each player is dealt 13 cards st 13 of the cards are mapped to each player.

It is a function as one card is mapped to one and only one player.

The function is not injective because 13 cards 1 are mapped to one player so it is a many-one function but the injective function does not map two elements to a common clement.

In conclusion, It is surjective as each player is dealt 13 cards. the function is not injective hence rot bijective.

Read more about surjective

brainly.com/question/13423972

#SPJ1

5 0
1 year ago
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