All categories

3 years ago

When solving a system of inequalities, which of the following methods are used? A.guess and check

Mathematics

1 answer:

yarga [219]3 years ago

7 0

Answer:

Option B - graphing is the correct answer.

Step-by-step explanation:

To solve a system of inequalities we need graphing. Inequality tells us about the relative size of two values. When we graph the x and y co-ordinates, the solution is not the drawn line, but the area of the coordinate plane that satisfies the inequality. In inequalities, multiple solutions can be possible.

Plug and chug method does not a complete solution, it only tells where a point belongs. Guess and check does not apply here.

You might be interested in

an elevator has a maximum lift of 2000 pounds you're moving 55 pound boxes of books write an equation and estimate how many boxe

Anettt [7]

36 boxes at 55 pounds u have to divide 2000 to 55

5 0

3 years ago

Read 2 more answers

I don’t get this it’s hella confusing please help

Luda [366]

1. Yes , Yes

2. Yes , Yes

3. No , No

4. No, Yes

3 0

2 years ago

When Harper commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 24 minutes and a

Korvikt [17]

Answer:

$\mu -2\sigma = 24-2*3= 18$

$\mu -2\sigma = 24+2*3= 30$

So then we can conclude that we expect the middle 95% of the values within 18 and 30 minutes for this case

Step-by-step explanation:

For this case we can define the random variable X as the amount of time it takes her to arrive to work and we know that the distribution for X is given by:

$X \sim N(\mu = 24, \sigma =3)$

And we want to use the empirical rule to estimate the middle 95% of her commute times. And the empirical rule states that we have 68% of the values within one deviation from the mean, 95% of the values within two deviations from the mean and 99.7 % of the values within 3 deviations from the mean. And we can find the limits on this way:

$\mu -2\sigma = 24-2*3= 18$

$\mu -2\sigma = 24+2*3= 30$

So then we can conclude that we expect the middle 95% of the values within 18 and 30 minutes for this case

7 0

3 years ago

Evaluate the following expression. y + 9 when y = 12

tino4ka555 [31]

Answer:

Step-by-step explanation:

y+9 = ?

y=12

12+9=21

5 0

2 years ago

Read 2 more answers

Solve 2x+ 3=7<br> please

blondinia [14]

2x+3=7

2x+3-3=7-3

Whenever moving a number to the other side you have to change the sign .

2x= 4

x=2

7 0

3 years ago