3 years ago

Describe the surface in r3 represented by the equation x + y = 7.

1 answer:

7 0

This is a plane in 3D space (aka "3-space") which is like a flat sheet of a paper that doesn't bend at all, and it extends infinitely in all directions along the flat surface. This plane is tilted and not vertical or horizontal.

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Can some one help me this please

Aloiza [94]

Step by step explanation:

5X4=20
£20 for 5 hours
£20+£12=£32

Hope this helped!

4 0

3 years ago

Juan works at bob’s appliance store . he earns $400 per week he also receives a commission of $50 for each appliance he sels

sweet-ann [11.9K]

Answer:

400×W+50×A=?

Step-by-step explanation:

since it's 400 a week then you need to take into account the weeks worked. Then since it's 50 per an appliance you need to multiply by the number sold.

5 0

3 years ago

A tree casts a shadow that is 8 feet long, a 3 foot mailbox cast a shadow that is 5 feet long. how tall is the tree?

madam [21]

Set up two fractions:
8/x and 3/5
Set them equal to each other and cross multiply to get:
8*5 = 3x
40 = 3x
13.3 = x or 13 and 1/3 feet tall.

7 0

3 years ago

A and b are two similar shapes the area of shape a is 200 what is the area of shape b shape a is shown a length 12cm shape b is

Nesterboy [21]

The area of shape b is 250

5 0

3 years ago

3x - 3(x+1) - 3<br> Solution for x

sertanlavr [38]

Answer:

-6

Step-by-step explanation:

3x-3(x+1)-3

3x-3x-3-3

-3-3

-6

7 0

4 years ago