PLEASE HELP ! I need the answers asap! :( I will mark brainlest!

Mathematics

1 answer:

expeople1 [14]3 years ago

6 0

Answer:

10. G) point, line, plane

11. A) 6

12. H) Postulates

Step-by-step explanation:

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the sum of three numbers is twenty. the second number is four times the first and the sum of the first and third is eight. what

8090 [49]

Let's call the three numbers x, y, and z.

The numbers are 3, 12, and 5.
x + y + z = 20
y = 4x
x + z = 8
We can rewrite the first equation because y is 4x, so
x + 4x + z = 20
5x + z = 20
And now we can use simultaneous equation rules to solve

5x + z = 20
x + z = 8

5x + z = 20
5x + 5z = 40
(subtract)
-4z + -20
÷ -4
z = 5

x + z = 8
x + 5 = 8
x = 3

y = 4x
y = 4 × 3
y = 12

I hope this helps!

4 0

3 years ago

Does the table represent a proportional or a nonproportional linear relationship?

Ede4ka [16]

Answer:

I believe it is proportional.

Step-by-step explanation:

The numbers are going up by an equal amount each time. I am very sorry if it ends up wrong, but I think it is correct.

3 0

3 years ago

Read 2 more answers

What is the volume of the sphere that has a diameter of 3? use 3.14 for pie

aev [14]

Hey ! there

Answer:

113.04 unit cube

Step-by-step explanation:

In this question we are provided with a sphere having radius 3 units and value of π is 3.14 . And we're asked to find the volume of sphere .