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4 years ago

How do you do substitution in algebra 2?

1 answer:

6 0

We can substitute<span> y in the second equation with the first equation since y = y. The solution of the linear system is (1, 6). You can use the </span>substitution<span> method even if both equations of the linear system are in standard form</span>

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What 2 pieces of information will the discriminant give you?

torisob [31]

Answer:

the number

the type

Step-by-step explanation:

5 0

3 years ago

A bag of 100 tulip bulbs purchased from a nursery contains 20 red tulip bulbs, 20 yellow tulip bulbs, and 60 purple tulip bulb

nadezda [96]

Answer: a) 0.2 b) 0.6

c) The event of selecting red tulip is not likely to occur.

The event of selecting purple tulip is likely to occur.

Step-by-step explanation:

Given : Total number of tulips = 100

The number of red tulips = 20

The number of purple tulips =60

The probability that a randomly selected tulip bulb is red :-

$\dfrac{\text{Number of red tulips}}{\text{Total tulips}}\\\\=\dfrac{20}{100}=0.2$

Since 0.2 is less than 0.5.

It means that the event of selecting red tulip is not likely to occur.

The probability that a randomly selected tulip bulb is purple :-

$\dfrac{\text{Number of purple tulips}}{\text{Total tulips}}\\\\=\dfrac{60}{100}=0.6$

Since 0.6 is more than 0.5.

It means that the event of selecting purple tulip is likely to occur.

3 0

4 years ago

Jesse earns $420 a week, and he works 5 days a week. What is his daily wage?

Arte-miy333 [17]

420 divided by 5= $84
$84 is his daily wage

3 0

3 years ago

The compressive strength of concrete is being tested by a civil engineer who tests 12 specimens and finds that the sample mean i

ki77a [65]

Answer:

The 95% confidence interval for mean compressive strength is:

$3237.3\leq \mu\leq 3282.5$

Step-by-step explanation:

We have a sample of n=12 specimens, with sample mean=3259.9 and sample standard deviation = 35.57.

We know the population is normally distributed.

For a 95% confidence interval and df=n-1=11, the t-statistic is t=2.201.

Then, the CI can be expressed as:

$M-t*s/\sqrt{N}\leq \mu\leq M+t*s/\sqrt{N}\\\\3259.9-2.201*35.57/\sqrt{12}\leq \mu\leq 3259.9+2.201*35.57/\sqrt{12}\\\\ 3259.9-22.6\leq \mu\leq 3259.9+22.6\\\\3237.3\leq \mu\leq 3282.5$

6 0

3 years ago

The length of (-2,10) and (11,-2)

Sergio039 [100]

The distance? If it is asking for the distance then its square root 313.

5 0

3 years ago