(a)
Find the determinant D of the 3 X 3
D=|2 1 -1 |
|-1 2 -3|
|1 0 2 |
(b)
Use the determinant in D to find the values of x, y and z if Dx = 18, Dy = 27 and D2 = -36.​

x = 3 would be your answer

because i have no clue just thanks and five stars please

Answer:

0.33

Step-by-step explanation:

Because you have 2 apples that weigh 0.33 pounds you gain 2 from your parents then give 2 to your friends so you have 2 left or....0.33 pound left.

Hope this helps☺️

Answer:

$410

Step-by-step explanation:

15*6=90

90-80=10

400+10=410

$410

Answer:

i would go with cliches cuz i know what all the others are

Step-by-step explanation:

Answer:

cliches

Step-by-step explanation:

Answer:

The minimum exam score to be awarded an A is about 8.52.

Step-by-step explanation:

Let X represent the scores on a common final exam.

It is provided that X follows a normal distribution with mean, μ = 71 and standard deviation, σ = 9.

It is provided that according to the department policy is that the top 10% of students receive an A.

That is, P (X > x) = 0.10.

⇒ P (X < x) = 0.90

⇒ P (Z < z) = 0.90

The corresponding z-score is:

z = 1.28

Compute the value of x as follows:

[tex]z=\frac{x-\mu}{\sigma}\\\\1.28=\frac{x-71}{9}\\\\x=71+(1.28\times 9)\\\\x=82.52[/tex]

Thus, the minimum exam score to be awarded an A is about 8.52.

Step-by-step explanation:

16-9=5t+2t

7=7t

t=1

The answer is 1

Answer:

t=1

Step-by-step explanation:

        16-2t=5t+9

+2t                              +2t

          16=7t+9

-9                          -9

            7=7t

t=1

Answer:

-103n = 0

Step-by-step explanation:

Watch my following steps:

8 - 81n - 18 = -10 + 22n

8 - 81n - 22n = -10 + 18

-81n - 22n = 8 - 8

-103n = 0

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Answer:

[tex]10^{2}[/tex]

Step-by-step explanation:

[tex]10^{6} /10^{4}[/tex]

=> [tex]10^{2}[/tex]

Proof,

10 * 10 * 10 * 10 * 10 * 10 / 10 * 10 * 10 * 10

4 ten's cancel each other, leaving behind 2 ten's, and,

10 * 10 is the same thing as [tex]10^{2}[/tex]

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Thank You!!

Answer:

6.8

Step-by-step explanation:

Answer:

120

Step-by-step explanation:

Answer: 399÷28= 14.25

Step-by-step explanation:

Divide 399 by 28 = 14.25 gal

Answer:

21/10

Step-by-step explanation:

Answer:

It is 1/2

Step-by-step explanation:

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Answer:

Shape of sampling distribution of sample mean being approx normal or not depends upon sample size.

Step-by-step explanation:

'The shape of the sampling distribution of the sample mean is approximately normal' might be true or false, depending on sample size.

If the sample size satisfies the condition of being sufficiently large, the shape of sampling distribution of sample mean becomes more bell shaped normally distributed (even more normally distributed than actual population).

Central Limit theorem also states this - Larger the sample size, shape of sampling distribution of sample mean becomes more normally distributed around population mean.

Answer:

X-

(7/6,0)

y-

(0,-7/3)

Step-by-step explanation:

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

x-intercept(s):

(7/6,0)

y-intercept(s):

(0,−7/3)

Answer:

16 gallons  

Step-by-step explanation:

195=  12x-3

Step-by-step explanation:

LHS= csc^2 θ . tan^2 θ - 1

= (1/Sin^2 θ). (Sin^2 θ / cos^2 θ) - 1

= 1/cos^2 θ - 1

= (1 - cos^2 θ) / cos^2 θ

= sin^2 θ / cos^2 θ

= tan^2 θ

= RHS

Hence proved

Answer:

-3(x+4)

Step-by-step explanation:

you just factor out -3

Answer: -3(x+4)

Step-by-step explanation:

Hii, do you need to factor -3x-12? No problem!

Note that -3x and -12 have a -3 in common, so we can factor it out by dividing both -3x and -12 by -3.

x+4 (A negative number divided by a negative number gives us a positive result)

Next, we put parentheses around x+4

(x+4)

Now we put -3 outside these parentheses

-3(x+4)

Voila! There's our solution, cheers!

--

Hope that this helped! Best wishes.

--

Answer:

y=250x+300

Step-by-step explanation:

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

The amount of money in Zarika's bank account over time after x weeks is represented by the equation.

y = 250x + 300

Option A is the correct answer.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 3 = 4 is an equation.

We have,

Amount earned each week = same.

Amount in her account = $300.

Number of weeks = x

Amount in the account = y

The equation represents the account balance after x weeks.

Total amount = $300 + Amount earned per week

This can be written as,

y = 250x + 300

Thus,

The amount of money in Zarika's bank account over time after x weeks is represented by the equation.

y = 250x + 300

Option A is the correct answer.

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What does kimfrelcastro3kimfre​ mean?

0.9 pounds of blueberries are left.

Percentage:

The Latin word "per centum," which meaning "by the hundred," was the source of the English word "percentage." Fractions with a denominator of 100 are called percentages. In other words, it is a relationship where the value of the entire is always assumed to be 100.

What is percentages ?

A percentage is a ratio or fraction where the full value is always 100. Sam, for instance, would have received 30 out of a possible 100 points if he had received 30% on his arithmetic test. In ratio form, it is expressed as 30:100 and in fraction form as 30/100.

Calculation of Percentage:

Finding the percentage of a whole in terms of 100 is what percentage calculation refers to. A percentage can be found in one of two ways:

By using the unitary method.

By changing the denominator of the fraction to 100.

It should be noted that when the denominator is not a factor of 100, the second technique of percentage calculation is not applied. In these situations, we employ the unitary technique.

Based on the given conditions, formulate:  2 x (1- 0.35- 0.2)
Calculate the sum or difference: 2 x ( 0.65 - 0.2)
Calculate the sum or difference: 2 x 0.45
Calculate the product or quotient: 0.9

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Answer:

13r/4

Step-by-step explanation:

aha i looked it up xD

The explanation is you have to put the whole number over its self.Then they have to have common denominator.Then add

Answer: A null hypothesis is a statistical hypothesis that is tested for possible rejection under the assumption that it is true.

Step-by-step explanation:

The null hypothesis[tex](H_0)[/tex] and alternative hypothesis[tex](H_a)[/tex] both are statements as per the researcher's claim that involves population parameter .

Null hypothesis has  ≤,≥ ,= signs

Alternative hypotheses has < , > , ≠ signs.

A null hypothesis is a statistical hypothesis that is tested for possible rejection under the assumption that it is true.

Answer:

The probability that the lacrosse goalie will make at least 10 saves is 0.558.

Step-by-step explanation:

Let X denote the number of saves the lacrosse goalie will successfully make.

It is provided that the probability of the lacrosse goalie making a successfully save is, p = 0.80.

It is assumed that all save attempts are independent.

Suppose that the lacrosse goalie attempts to make n = 12 saves.

The random variable X follows a binomial distribution with parameters n = 12 and p = 0.80.

Compute the probability that the lacrosse goalie will make at least 10 saves as follows:

[tex]P(X\geq10 )=P(X=10)+P(X=11)+P(X=12)[/tex]

                 [tex]={12\choose 10}(0.80)^{10}(0.20)^{2}+{12\choose 11}(0.80)^{11}(0.20)^{1}+{12\choose 12}(0.80)^{12}(0.20)^{0}\\\\=0.2835+0.2062+0.0687\\\\=0.5584\\\\\approx 0.558[/tex]

Thus, the probability that the lacrosse goalie will make at least 10 saves is 0.558.

Step-by-step explanation:

the answer is y=1/4 ×-2

Answer:

77

Step-by-step explanation:

dont use that

Answer: hopefully this helps

Step-by-step explanation:

In 1 minute Victor runs 3/5 laps and in 6 minutes Victor runs 3.6 laps.

Given that, Victor runs 3 laps around the track every 5 minutes.

Proportion, in general, is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.

Now, 3/5 = x/1

⇒ x= 3/5 laps

Here, [tex]1\frac{1}{5} =1.2[/tex]

3/5 = 1.2/y

⇒ 3y=6

⇒ y=2 minutes

3/5 = z/6

⇒ 18=5z

⇒ z=18/5

⇒ z=3.6 laps

Therefore, in 1 minute Victor runs 3/5 laps and in 6 minutes Victor runs 3.6 laps.

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