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2 years ago

6

What is the distance between the two endpoints in the graph below? if necessary, round your answer to two decimal places. (2,3)

(-3,-2)

2 answers:

RideAnS [48]2 years ago

7 0

Pretty sure it's 5 because the slope is 1 so you can just count it from the graph

12345 [234]2 years ago

4 0

7.07 units :) ‎ ‎ ‎ ‎

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You can upgrade lighting at your factory to LED bulbs that coast 6.95 each and last an average of 5 years.

miskamm [114]

Answer:

$200

Step-by-step explanation:

Here is the full question

You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs $3 in labor to change a bulb. Over a 10-year period, about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?

in 10 years, the bulbs would be changed twice

Total cost incurred per bulb in 10 years = (6.95 + $3) x 2 = $19.90

Since there are 100 bulbs, total cost incurred would be - $19.90 x 100 = $1990

Cost per year = $1990 / (6.95 + $3) = $200

3 0

3 years ago

Help? which one should I choose

Delvig [45]

Answer:

true

Step-by-step explanation:

For 3 sides to be able to form a triangle, we need to check that the 2 shorter sides can "touch" when "stemming" out of the long side.

The long side has length 7cm, so the sum of 2 shorter sides must be bigger than 7cm for them to "touch". Note: if the sum was 7cm, the only way they would touch is if they were laid along the long side, so it would not be a triangle - it would be a segment.

Fortunately, 3cm + 5cm > 7cm, so we can form a triangle.

7 0

3 years ago

Instructions: Find the equation of the line through point (2, -1) and

Kazeer [188]

Answer:

$y = -\frac{2}{5}x -\frac{1}{5}$

Step-by-step explanation:

Given

Passes through: $(2,-1)$

Parallel to: $2x + 5y = 15$

Required

First, calculate the slope of the parallel line

$2x + 5y = 15$

Make y the subject

$5y = 15 - 2x$

Divide through by 5

$y = 3 - \frac{2}{5}x$

$y =- \frac{2}{5}x+3$

An equation in slope intercept has the form:

$y = mx + b$

Where:

m = slope

$y = mx + b$

So:

$m = -\frac{2}{5}$

The required is parallel to $2x + 5y = 15$ .

This mean, the same slope

The equation is the calculated using:

$y - y_1 = m(x - x_2)$

This gives:

$y - (-1) = -\frac{2}{5}(x - 2)$

$y +1 = -\frac{2}{5}x +\frac{2}{5}*2$

$y +1 = -\frac{2}{5}x +\frac{4}{5}$

$y = -\frac{2}{5}x +\frac{4}{5}-1$

Take LCM

$y = -\frac{2}{5}x +\frac{4-5}{5}$

$y = -\frac{2}{5}x -\frac{1}{5}$

i.e.

$y = -2/3x -1/5$

3 0

3 years ago

Dr. V.R. Bencivenga and Dr. Stephen Donald Economics 329 HOMEWORK QUESTION - Belief in global warming In a large city a certain

Dmitry [639]

Answer: d. 1068

Step-by-step explanation:

Let p be the proportion of adults believe that global warming is a liberal hoax designed to hurt oil companies.

Given : You plan to take a survey of n adults to "estimate" this proportion. You want to be able to say that your estimate is within three percentage points (i.e., within 0.03) of the true proportion, with 0.95 probability.

Margin of error : E= 0.03

We know that the z-value for 95% confidence = $z_c=1.96$

Since the prior proportion of adults believe that global warming is a liberal hoax designed to hurt oil companies.

We assume p = 0.5

Then by Central Limit Theorem , the required sample size would be :

$n=p(1-p)(\dfrac{z_{c}}{E})^2$

$\Rightarrow\ n=0.5(1-0.5)(\dfrac{1.96}{0.03})^2$

Simply , we get

$n=1067.11111111\approx1068$ [Rounded to the next whole number.]

Hence, the smallest sample size that guarantees that you would obtain a satisfactory estimate =1068

5 0

3 years ago

Cuál es el área de superficie de una esfera con un diámetro de 10 mm ? Redondea al número entero más próximo

Liula [17]

Step-by-step explanation:

¡Hola a todos!

Usa la fórmula para una esfera:

$V=\frac{4}{3} \pi r^3$

$V=\frac{4}{3} \pi (125)\\V=523.59877 mm^3$

No soy un hablante nativo de español, así que esto puede ser un poco confuso, ¡pero espero que ayude!

:)

6 0

3 years ago