I'm doing algebra and I need help

3p+q=7
2p-2q= -6

sorry about the pic my handwriting is bad but please help me​

Answer:

I think it's 44

Step-by-step explanation:

Answer:

B. 10 yd., 14 yd., 17 yd.

Step-by-step explanation:

In a right triangle, the squares of the sums of the two shorter sides must equal the square of the longer side(which is the hypotenuse)

From the combinations given only the set 10 yd, 14 yd. and 17 yd does not obey this rule

10² + 14² = 296
17² = 298
So this does not match

Answer:

Step-by-step explanation:

Total number of beads:

Using relations in a right triangle, the secant of angle θ is given by:

D. 5/4.

The relations in a right triangle are given as follows:

Using the Pythagorean Theorem, the hypotenuse of the triangle is given as follows:

h² = 9² + 12²

h = sqrt(9² + 12²)

h = 15.

The secant of an angle is 1 divided by the cosine, hence:

Which means that option D is correct.

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Answer:

The temperature at 8:00 p.m. is greater than the temperature at 8:00 a.m. because 15 is farther to the right on a horizontal number line than -12.

Step-by-step explanation:

The temperature at 8:00 p.m. is greater than the temperature at 8:00 a.m. because 15 is farther to the right on a horizontal number line than -12. Therefore, option B is the correct answer.

Given that, a meteorologist records the temperatures throughout the day in Chicago, Illinois.

Integers include all whole numbers and negative numbers. This means if we include negative numbers along with whole numbers, we form a set of integers.

Compare the temperature at 8:00 a.m. to the temperature at 8:00 p.m.

Here,

The temperature at 8:00 p.m. is greater than the temperature at 8:00 a.m.

The difference between the temperatures is 15-(-12)=27° C

The temperature at 8:00 p.m. is greater than the temperature at 8:00 a.m. because 15 is farther to the right on a horizontal number line than -12. Therefore, option B is the correct answer.

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Answer:

There are 200 4th grades and 360 third graders

Step-by-step explanation:

560/2=280-80=200 280+80=360

Answer:

if it is reflected on the y axis, it will be moved to quadrant 2(top left). if it reflects over the x axis, it will move to quadrant 4(bottom right).

Answer:

9.1%

Step-by-step explanation:

The price of a coffee has dropped to $2.50

Yesterday the price was $2.75

Therefore the percentage decrease can be calculated as follows

= 2.50 - 2.75/2.75 × 100

= -0.25/2.75 ×100

= 0.09090 × 100

= 9.1%

Hence the percentage decrease is 9.1%

Answer:

The values of the variables in the given linear system are:

x = 30

y = 18

z = 14

Step-by-step explanation:

To find the value of y in the linear system, we can solve the system of equations:

x + y + z = 62

x - y = 12

2x + y + z = 92

We'll use the method of elimination to solve this system. We'll start by eliminating the y variable.

From equation 2), we can rewrite it as y = x - 12.

Now let's substitute this value of y in equations 1) and 3):

x + (x - 12) + z = 62

2x - 12 + z = 62

2x + z = 74 ----(4)

2x + (x - 12) + z = 92

3x - 12 + z = 92

3x + z = 104 ----(5)

Now we have a system of two equations with two variables (x and z). Let's solve this system.

Subtract equation (4) from equation (5):

(3x + z) - (2x + z) = 104 - 74

3x - 2x + z - z = 30

x = 30

Substituting the value of x back into equation (4):

2(30) + z = 74

60 + z = 74

z = 74 - 60

z = 14

Now we have the values of x and z. We can substitute these values into equation (2) to find y:

x - y = 12

30 - y = 12

-y = 12 - 30

-y = -18

y = 18

Therefore, the value of y in the given linear system is 18.

Answer:

Values are:

x = 30

y = 18

z = 14

Step-by-step explanation:

30 + 18 + 14 = 62

30 - 18 = 12

2*30 + 18 + 14 = 92

Answer:

the time percentage is 17%

Step-by-step explanation:

The computation of the time percenatge in the case when the detector lie and done with the mistake is as follows:

L denotes the event  in which a person is lying.

NL denotes the event in which a person is not lying.

C denotes the event in which that lie detector works correctly

NC denotes the event in which  lie detector is not working correctly

Now

P(C|L) =0.8

And,

P(NC|L) is

=1 - .8

= 0.2

P(C|NL) =0.9

P(NC|NL) is

= 1 -.9

=.1

P(L) = 0.7

P(NL) is

= 1 - .7

= .3

Now

P(NC) =P(NC|L) × P(L) + P(NC|NL) × P(NL)

=. 2 × .7 + .1 ×.3

=. 14+.03

= 0.17

Hence, the time percentage is 17%

Answer:

B. The 95% confidence interval is from about 82.87 to 88.33 miles.

C. The margin of error for 99% confidence is about 3.59 miles.

Step-by-step explanation:

No cheese detected or anything hehehe

9514 1404 393

Answer:

  there are two solutions under some circumstances

Step-by-step explanation:

If the given data is two sides, and the angle opposite the shorter of them, then there will be two solutions. Which of the solutions is applicable may be resolved in the triangle is drawn to scale.

If the triangle is not drawn to scale, then there may be no way to resolve an ambiguous case.

__

If a known angle is opposite the longest side, there is no ambiguity.

Answer:78

Step-by-step explanation:

1300x0.06=78

The commission by the salesman on the jewelry is $78.

A sales commission is a sum of money paid to an employee upon completion of a task, usually selling a certain amount of goods or services.

Given that, a salesperson at a jewelry store earns a 6% commission. The worth of the jewelry is $1300

The commission on the jewelry =

6% of $1300

= 1300 × 6 / 100

= 13 × 6

= 78

Hence, he earned $78 as commission.

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Answer:

x=-13

Step-by-step explanation:

21-3.5x+14=7-7.5x-24

21+14-3.5x=7-24-7.5x

35-3.5x=-17-7.5x

35+17=3.5x-7.5x

52=-4x

-4. -4

x=-13

Subtract 229 and 164 its 65 so thats your answer .

Answer:

The mean value of the chemical to be added to every bottle of syrup so that the bottle wont be rejected would be = 1.41750 ml

Step-by-step explanation:

Standard deviation ( σ )= 0.250 ml

assume the required amount of chemical to be deposited in each syrup bottle to be X

Hence the distribution of X in each bottle can be represented as :

X Г N ( u , 0.250 )

for a bottle not to be rejected  :  P ( X ≤ 2 )

To determine the setting so that no more than 1% of the bottles of cough syrup prepared by this machine will be rejected we have to standardize the variable X

at X = 2 ml

\(\frac{x - u }{std} = \frac{2 - u}{std}\)

z = \(\frac{2-u}{0.250}\) = z ----------- ( 1 )

probability for a bottle to be rejected : P( x >2 ) = 1 - P ( x ≤ 2 )

                                                                             = 0.01

attached below is a normal distribution curve showing probability values

from the curve

p( 0 < Z < z ) = 0.5 - 0.01 = 0.49  

Area = 0.49 hence from the Normal table where area = 0.49 the value of z = 2.33

Referring back to equation 1 above:  z = \(\frac{2-u}{0.250}\) = 2.33 --------- (2)

u = mean value that should be added so that the bottle will not be rejected

make u subject of the equation : u = 2 - ( 2.33 * 0.250 )

                                                       u = 1.41750

The mean value of the chemical to be added to every bottle of syrup so that the bottle wont be rejected would be = 1.41750 ml

The blank spaces in the statements area. S, R, and Q  are distinct points that are collinear: b. TX and QS are distinct lines that intersect. c. Point Y and line QS are coplanar. d. Another name for plane P is: plane QSY.

Points that lie on the same straight line are collinear points.

If two lines are lie on the same plane, they are referred to as coplanar lines.

(a.) S, R, and Q are on a straight line. Therefore S, R, and Q  are distinct points that are collinear.

b. TX and QS are distinct lines that intersect.

c. Point Y and line QS are on the same plane. Therefore:

Point Y and line QS are coplanar.

d. Another name for plane P is: plane QSY.

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Answer:

2 inches

Step-by-step explanation:

if there are 2 books that are 1 1/2 thick, the second thinnest book would be 1/12... the second thickest book im guessing would be 3 1/2, so you'd have 2 inches in between

Answer: the answer is, 2 and one half

Step-by-step explanation: I took the test. Please give brainliest

Answer:

B

Step-by-step explanation:

using the recursive rule \(a_{n}\) = 3\(a_{n-1}\) and a₁ = 10, then

a₁ = 10

a₂ = 3a₁ = 3 × 10 = 30

a₃ = 3a₂ = 3 × 30 = 90

the first 3 terms are 10 , 30 , 90

Answer:

Infinite number of solutions

Step-by-step explanation:

Use distributive property to eliminate the parenthesis on the left:

8 x + 12 = 16 x + 12 - 8 x

combine like terms on the right:

8x+ 12 = 8 x + 12

subtract 12 from both sides

8 x = 8 x   (notice both sides are identical)

subtract 8 x  from both sides

0 = 0

This is a true statement that takes place for whatever x-value we use in the original equation. Therefore, the equation has infinite number of solutions (any real number "x")

Answer:

= 9

Step-by-step explanation:

1/2 (12) +3 = 9

Hope this helps!

18+24+63=? işlemini yapman gerek sonra sonuçtan ?-63=? işlemini yapacaksın sonra o sonucu 100 e bölüp sonucu bulcan

Step-by-step explanation:

Based on the provided information, I would recommend B&K Real Estate Company to choose the Silver Package with a sample size of 1,000 listings. This option strikes a balance between cost and accuracy, providing a reasonable margin of error while minimizing the cost for the service.

Confidence Statement:

"I am 95% confident that the true mean of the Northeast house listing prices falls within the estimated range, based on a sample size of 1,000 listings."

Factors Considered:

Cost: The cost for the Silver Package is $10,000, which is lower than the Gold Package but higher than the Bronze Package. B&K can achieve a reasonably accurate estimate of the mean listing price at a lower cost compared to the Gold Package.

Margin of Error: The margin of error for the Silver Package is $7,750. While it is larger than the Gold Package, it is significantly smaller than the Bronze Package. The margin of error represents the range within which the true mean of listing prices is likely to fall. With a smaller margin of error, the estimated mean is more precise, providing a better understanding of the Northeast home prices compared to the Bronze Package.

Sample Size: The sample size of 1,000 listings in the Silver Package is larger than the Bronze Package but smaller than the Gold Package. A larger sample size generally leads to a more accurate estimate of the population mean. Although the sample size in the Gold Package is larger, the incremental gain in accuracy is not significant enough to justify the higher cost.

Response to Peers:

Response 1:

If the agents prefer a higher confidence interval, such as 99%, compared to the management's 95% confidence interval, it would require a larger sample size to achieve the desired accuracy. This could result in increased costs for data collection. However, a higher confidence interval provides greater confidence in the estimated mean listing price, giving the agents more assurance when making decisions. The advantage is a higher level of confidence, but the disadvantage is the increased cost associated with a larger sample size.

Response 2:

If the agents prefer a lower confidence interval, such as 90%, compared to the management's 95% confidence interval, it would require a smaller sample size to achieve the desired accuracy. This could reduce the cost for data collection. However, a lower confidence interval means a wider margin of error and less certainty in the estimated mean listing price. The advantage is the cost savings, but the disadvantage is a lower level of confidence in the estimate, potentially leading to more uncertainty for the agents when making decisions

10√2

Step-by-step explanation:

i thin so it will be ans

Kamryn would save $159.99 in interest by raising her credit score from 665 to 680 when borrowing $13,250.00 with a simple interest rate loan.

To determine the amount of interest Kamryn will save by raising her credit score from 665 to 680, we need to compare the interest rates associated with each credit score range.

According to the given information, a credit score of 665 falls within the range of 580-669, where the corresponding simple interest rate is 10.358%.

Let's calculate the interest Kamryn would pay on a loan of $13,250.00 at an interest rate of 10.358%.

Interest = Principal * Rate

= $13,250.00 * 0.10358

≈ $1,370.56

Therefore, if Kamryn were to borrow $13,250.00 with a credit score of 665, she would pay approximately $1,370.56 in interest.

Now, let's consider the scenario where Kamryn raises her credit score to 680. A credit score of 680 falls within the range of 670-739, where the corresponding simple interest rate is 9.132%.

Calculating the interest with a credit score of 680:

Interest = Principal * Rate

= $13,250.00 * 0.09132

≈ $1,210.57

Thus, if Kamryn were able to raise her credit score from 665 to 680, she would save approximately $1,370.56 - $1,210.57 = $159.99 in interest.

Therefore, Kamryn would save approximately $159.99 in interest by raising her credit score from 665 to 680 when borrowing $13,250.00 with a simple interest rate loan.

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1% is the probability that the sample mean for a sample of size 35 will be at least 26.

To calculate the probability, we need to use the central limit theorem, which states that the sampling distribution of the sample mean is approximately normal, with mean μ and standard deviation σ/√n, where μ is the population mean, σ is the population standard deviation, and n is the sample size.

Since we do not have the population mean and standard deviation, we will assume that they are unknown and use the sample mean and standard deviation instead. We will also assume that the sample is a random sample and that the sample size is sufficiently large (n ≥ 30).

We can use the z-score formula to calculate the probability as follows:

z = (X - μ) / (σ / √n)

where X is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.

In this case, we want to find the probability that the sample mean is at least 26, so we can rewrite the formula as:

z = (26 - X) / (s / √35)

where s is the sample standard deviation.

We can then use the z-table to find the probability that corresponds to the calculated z-score. The portion of the z-table provided gives the probability for the area under the curve to the left of the z-score.

Using a calculator, we can calculate the z-score as follows:

z = (26 - X) / (s / √35) = (26 - X) / (4.2 / √35)

Assuming a significance level of α = 0.05 (corresponding to a confidence level of 95%), we can find the z-score that corresponds to the area to the left of α/2 = 0.025 in the z-table, which is approximately 1.96.

Therefore, we can rewrite the formula as:

1.96 = (26 - X) / (4.2 / √35)

Solving for X, we get:

X = 26 - 1.96 * (4.2 / √35)

X ≈ 24.59

So, the probability of obtaining a sample mean of at least 26 is equivalent to the probability of obtaining a z-score of:

z = (26 - 24.59) / (4.2 / √35) ≈ 0.98

Using the z-table, we can find that the probability corresponding to a z-score of 0.98 is approximately 0.8365 or 83.65%.

Rounding to the nearest percent, we get the answer B. 1%.

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Correct question:

What is the probability that the sample mean for a sample of size 35 will be at least 26?

A. 0.01%

B. 1%

C. 5%

D. 10%

Answer:

  457

Step-by-step explanation:

The general term of an arithmetic sequence is given by ...

  an = a1 +d(n -1)

where a1 is the first term (-26), and d is the common difference (7).

The 70th term of your sequence can be found by putting the numbers into this formula:

  a70 = -26 +7(70 -1) = -26 +483

  a70 = 457

The 70th term of the sequence is 457.

Answer:

The answer is D.

Step-by-step explanation:

I hope this helps :D