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3 years ago

Does anyone know why x is normally used for an unknown number?

Mathematics

1 answer:

jeka943 years ago

7 0

Then you are able to substitute in X and it can have a infinite number of values catered to the question.

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What is the point that lies on a graph for 10y=3x-11. Is it A (2,-.5) B (4,1) C (6,16.3). Or D (8,23)?

Anit [1.1K]

Case A : x=2, y=-5
so putting the values of x and y in the equation, we get 10y -3x should be -11
so, 10* (-5) - 3 *2 = -50-6 = -56
case B , value of equation = 10*4 - 3*1 = 37
case C, value of equation = 10*6 -3*16.3 = -11.1
Case D, value of equation = 10*8-3*23 = 11
Ans will be C

8 0

3 years ago

You are designing a rectangular and closure with a rectangular sections separated by parallel walls if you have 2500 feet of fen

erica [24]

Answer:

781250

Step-by-step explanation:

Let x = length of fenced side parallel to the side that borders the river

and y = length of each of the other two fenced sides

Then, x + 2y = 2500

<=> x = 2500- 2y

Area = xy = y(2500-2y)

= - $y^{2}$ + 2500y

The graph of the area function is a parabola opening downward.

The maximum area occurs when y = -2500/[2(-2)] = 625

x = 2500-2y = 1250

The maximum area that can be enclosed = xy = 1250*625 = 781250

8 0

3 years ago

Read 2 more answers

There are 45 boys and 60 girls in Year 6. What is the ratio of boys to girls? Write the ratio in the simplest form

exis [7]

The answer to this is 3:4

6 0

4 years ago

Read 2 more answers

How do I find the value of x?? please help

Snowcat [4.5K]

Add the two angles and then subtract from 180* to find the missing angle

So,

145* + 15* = 160*

180* - 160* = 20*

Answer: x = 20*

4 0

2 years ago

6/11+1/2 what is the answer

tester [92]

Answer:

1 1/22

Step-by-step explanation:

5 0

3 years ago