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3 years ago

The vertical axis of a demand curve shows

Mathematics

2 answers:

Alona [7]3 years ago

4 0

It represents price

Arturiano [62]3 years ago

4 0

vertical axis means y :- price per unit

check graph which is attached

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Why would i use quadratic formula to solve this quadratic equation?

lina2011 [118]

Answer:

It would be difficult to factor it...

Step-by-step explanation:

I'm not sure factoring would work so the quadratic formula would be the only way

6 0

3 years ago

An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these n

kramer

Answer:

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 232 V

Sample mean, $\bar{x}$ = 231.5 V

Sample size, n = 66

Sample standard deviation, s = 2.19 V

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 232\\H_A: \mu \neq 232$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{231.5- 232}{\frac{2.19}{\sqrt{66}} } = -1.8548$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = \pm 1.9971$

Since,

$|t_{stat}| > |t_{critical}|$

We accept the null hypothesis and conclude that voltage for these networks is 232 V.

4 0

3 years ago

Look at the Hexagon below

Mama L [17]

Answer:

Angle 9: 60°

Angle 10: 30°

Side = radius = 40sqrt(x/3)

Area = [800sqrt(3)]x

Step-by-step explanation:

Total angle in a hexagon:

(6 - 2) × 180

720

Each interior angle:

720/6 = 120

angle 9 = 120/2 = 60

Angle 10 = 60/2 = 30

sin(60) = 20sqrt(x)/r

r = 20sqrt(x) ÷ sqrt(3)/2

r = 40sqrt(x/3)

Side:

sin(30) = ½s/(40sqrt(x/3))

½s = 20sqrt(x/3)

s = 40sqrt(x/3)

Area = (3sqrt(3))/2 × s²

Area = 3sqrt(3)/2 × 1600x/3

Area = [800sqrt(3)]x

4 0

3 years ago

Is the following relation a function? (1 point)<br><br> yes<br> no

IRINA_888 [86]

Answer:

yes I believe it is a function

3 0

3 years ago

Help me solve this. Thank youx

liubo4ka [24]

I guess it's b

${x}^{2} + 8x + 16 \\ \\ 1. \: {x}^{2} + 2(x)(4) + {4}^{2} \\ 2. \: (x + 4)^{2}$

7 0

3 years ago