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azamat
4 years ago
14

Simplify the expression -5(yz+ 2) - 9yz + 1+ y^2

Mathematics
2 answers:
Reika [66]4 years ago
7 0

Answer:

y² - 14yz - 9

Step-by-step explanation:

-5(yz + 2) - 9yz + 1 + y²

-5yz - 10 - 9yz + 1 + y²

-14yz - 9 + y² (COLLECT LIKE TERMS)

y² -14yz - 9 (REARRANGE)

Tomtit [17]4 years ago
5 0

Answer:

y^2 - 14yz - 9

Step-by-step explanation:

-5(yz+2) - 9yz + 1 + y^2

-5yz -10 - 9yz +1 +y^2

y^2 - 14yz - 9

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1. Suppose we have a six-sided die that we roll once. Let ai represent the event that the result is i. Let Bj represent the even
Alex787 [66]

Using the probability concept, it is found that there is a

a) 0.2 = 20% probability that 3 is obtained.

b) 0.3333 = 33.33% probability that 6 is obtained.

c) 0.6667 = 66.67% probability of a number greater than 3.

d) 0.6667 = 66.67% probability of an even number.

A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

Item a:

There are 5 numbers greater than 1, one of which is 3, hence:

p = \frac{1}{5} = 0.2

0.2 = 20% probability that 3 is obtained.

Item b:

There are 3 numbers greater than 3, one of which is 6, hence:

p = \frac{1}{3} = 0.3333

0.3333 = 33.33% probability that 6 is obtained.

Item c:

There are 3 even numbers, two of which are greater than 3, hence:

p = \frac{2}{3} = 0.6667

0.6667 = 66.67% probability of a number greater than 3.

Item d:

There are 3 numbers greater than 3, two of which are even, hence:

p = \frac{2}{3} = 0.6667

0.6667 = 66.67% probability of an even number.

A similar problem is given at brainly.com/question/25667645

4 0
3 years ago
The area of the shaded region is less than the area enclosed by these rectangles. 600 Estimate - 0.082​
Scilla [17]

Answer:.....

Step-by-step explanation:sorry bro didnt want to troll you but needed points for my answer

3 0
3 years ago
Read 2 more answers
HELP WILL MARK BRAINLIEST!!!
Alenkasestr [34]

Answer:

y = 12

Step-by-step explanation:

set up equation for 'y varies inversely with x':  y = k/x

where 'k' is the constant of variation

8 = k/6

therefore, k = 48

value of y when x = 4:  y = 48/4; therefore, y = 12

                     

7 0
3 years ago
A market researcher for Eric’s Electronics wants to study TV viewing habits of residents in Chicago. The individuals in the surv
Elena L [17]

Answer:

Step-by-step explanation:

Confidence interval is written in the form,

(Sample mean - margin of error, sample mean + margin of error)

The sample mean, x is the point estimate for the population mean.

Since the sample size is large and the population standard deviation is known, we would use the following formula and determine the z score from the normal distribution table.

Margin of error = z × σ/√n

Where

σ = population standard Deviation

n = number of samples

From the information given

1) x = 17.5

σ = 5

n = 50

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.05 = 0.95

The z score corresponding to the area on the z table is 1.645. Thus, confidence level of 90% is 1.645

Margin of error = 1.645 × 5/√50 = 1.16

Confidence interval = 17.5 ± 1.16

3 0
4 years ago
Help me!!! I need to find the scale factor. Solve for x and y
Bad White [126]

Answer: For Triangle TSV, X = 6. For Triangle QPR, Y = 10.5. The scale factor is 1.5.

7 0
3 years ago
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