URGENT!! ILL GIVE
BRAINLIEST!!!! AND 100
POINTS!!!!!!!!!!

Answer:

trueeee

Step-by-step explanation:

Answer:

Step-by-step explanation:

In this question, we need to use the formula of means to solve the. We can set the number of beads Rajiv brings as X, and use the formula of mean to get the total number of beads that the Four(4) children have and the total number of beads that the Five(5) children have.

Four(4) children each have some beads, the mean number of beads is: 8

        4 * 8 = 32

We set the number of beads Rajiv brings as:

x, so the total number of beads that the Five(5) children have is:

32  +  x

The mean number of the Five(5) children is now: 9

      5  *  9   =  45

     32 +  x    =    45

      x  +  32  =    45

           -  32  =   -32

       x            =     13

By solving the above equation, you can get:

x  =  13

       13

Hope this helps!

Answer:

(-8/7 ; 5/7)

Step-by-step explanation:

5t + 1/2s = 3 - - - (1)

3t - 6s = 9 - - - - - (2)

Multiply (1) by 12 and (2) by 1

Add the result to eliminate s

60t + 6s = 36

3t - 6s = 9

____________

63t = 45

t = 45 / 63

t = 5/7

Put t = 5/7 in either (1) or (2) to obtain the value of s

3(5/7) - 6s = 9

15/7 - 6s = 9

-6s = 9 - 15/7

-6s = (63 - 15)/7

-6s = 48/7

s = 48/7 * - 1/6

s = - 8/7

Answer:

3 coins each row

Step-by-step explanation:

if you put 3 coins in 4 rows it we'll be equivalent to 12

a * (b + c) = a * b + a * c

x(y + z) + x(w + y) + w(x - z) = xy + xz + xw + xy + xw - wz = 2xy + xz + 2xw - wz

Answer: 2.

Answer:

\(\boxed{\boxed{\tt 2)\: 2xy + xz + 2xw - wz}}\)

Step-by-step explanation:

\(\tt x(y + z) + x(w + y) + w(x - z)\)

Expand by distributing terms:

\(\tt xy+xz+xw+xy+xw-zw\)

Combine like terms:

\(\tt xy+xy+xz+xw+xw-zw\)

\(\tt (xy+xy)+xz+(wx+wx)-wz\)

Simplify:

\(\tt 2xy+xz+2wx-wz\)

Answer: each base angle in an isosceles right triangle measures 45 degrees.

Step-by-step explanation:

In an isosceles right triangle, two sides have equal lengths, and one angle is a right angle (90 degrees).

Since it is an isosceles triangle, the two base angles (the angles opposite the equal sides) must be congruent, meaning they have the same measure.

To find the measure of each base angle, we can use the fact that the sum of the angles in a triangle is 180 degrees.

Let's denote the measure of each base angle as "x". Then, the sum of the three angles in the triangle can be expressed as:

x + x + 90 = 180

Simplifying the equation:

2x + 90 = 180

Subtracting 90 from both sides:

2x = 90

Dividing both sides by 2:

x = 45

Answer:

15.25

convert to ounces- 80 ounces equals 5 pounds

multiply by the unit price-5*3.05

get the answer- 15.25

Answer:

Step-by-step explanation:

(3.05/lb)(80oz)(lb/16oz)=$15.25

Answer:

First Gardener.

Step-by-step explanation:

1st gardener= 56 divided by 8= 7 bushes <---

2nd gardener= 45 divided by 5= 9 bushes

3rd gardener= 80 divided by 10= 8

Answer:

5/4 or 1 1/4 or 1.25

Step-by-step explanation:

Answer:

Continuous

Step-by-step explanation:

In fraction form, the answer is 1/4, which represents the simplified probability of the given event occurring.

To find the probability of picking a prime number and then picking another prime number, we first need to determine the total number of possible outcomes and the number of favorable outcomes.

Given the four numbers: 5, 6, 7, and 8, we can see that there are two prime numbers (5 and 7) and two non-prime numbers (6 and 8).

The total number of possible outcomes is 4 since there are four cards to choose from.

Now, let's consider the favorable outcomes, which are picking a prime number and then picking another prime number.

The probability of picking a prime number on the first draw is 2/4, as there are two prime numbers out of the four total cards.

Since we replace the card before the second draw, the probability of picking a prime number on the second draw is also 2/4.

To find the probability of both events occurring, we multiply the individual probabilities:

(2/4) * (2/4) = 4/16 = 1/4

Therefore, the probability of picking a prime number and then picking another prime number is 1/4.

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Answer:

Step-by-step explanation:

I think it’s 36 servings, but I am not sure

Answer:

a) 2

Step-by-step explanation:

got it right on edge 2021 || pls mark brainliest

Specific individuals in a population are unfairly left out of a study, which is known as exclusion bias. When researchers design a study that inadequately represents specific segments of the community, undercoverage bias emerges.

When a sample is not chosen that accurately represents the full population of data, a statistical error known as sampling error arises. As a result, the sample's findings do not accurately reflect the outcomes that the complete population would produce.

When a sample is chosen from a population based on the idea of randomization, this practise is known as probability sampling.

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ok here you go its B

Answer: i think its D

Step-by-step explanation:

Answer:

-90=\(x\)(\(x\)-18)

-90=\(x^{2}\)-18\(x\)

\(0=x^{2}-18x+90\)

\(x=9+3i or 9-3i\)

Step-by-step explanation:

you need to use quadratic formula and you will find square root a negative ( -9 ), which is an imaginary no.

square root (-9) = 3i

1) The probability distribution of the average weekly earnings for employees in general automotive repair shops is the sampling distribution of the sample mean. According to the Central Limit Theorem, if the sample size is large enough, the sampling distribution of the sample mean is approximately normal, with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.

2) To find the probability that the average weekly earnings is less than $445, we can standardize the sample mean and use a z-table. The z-score for $445 is calculated as follows: z = (445 - 450) / (50 / sqrt(100)) = -1. Using a z-table, we find that the probability that the average weekly earnings is less than $445 is approximately 0.1587.

3) Since we are dealing with a continuous distribution, the probability that the average weekly earnings is exactly equal to any specific value is zero.

4) To find the probability that the average weekly earnings is between $445 and $455, we can subtract the probability that it is less than $445 from the probability that it is less than $455. The z-score for $455 is calculated as follows: z = (455 - 450) / (50 / sqrt(100)) = 1. Using a z-table, we find that the probability that the average weekly earnings is less than $455 is approximately 0.8413. Therefore, the probability that it is between $445 and $455 is approximately 0.8413 - 0.1587 = 0.6826.

5) In answering questions 2-4, we made an assumption about the population distribution based on the Central Limit Theorem. We assumed that since our sample size was large enough (n=100), our sampling distribution would be approximately normal.

6) If we assume that weekly earnings for employees in all general automotive repair shops are normally distributed with a mean of $450 and a standard deviation of $50, then we can calculate the z-score for an employee earning more than $480 in a given week as follows: z = (480 - 450) / 50 = 0.6. Using a z-table, we find that the probability that an employee will earn more than $480 in a given week is approximately 1 - 0.7257 = 0.2743.

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - α)% confidence interval for the average using the finite correction factor is:

\(CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}\)

The information provided is:

\(N=1500\\n=183\\\sigma=1.47\\\bar x=3.3\)

The critical value of z for 95% confidence level is,

z = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

\(CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}\)

     \(=3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)\)

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Answer:

X=10

Step-by-step explanation:

Plug 3 into the k in the first equation. Multiply by 3 to cancel out the fraction. This leaves you with x-1=9. Add 1 to both sides and you get x=10.

Answer:

x-1/3 = k

or, x-1/3 = 3 ( putting k = 3 )

or, x-1/3+1/3 = 3+1/3 ( adding 1/3 to both sides of the equation)

or, x = 3+1/3

or, x = {3(3)+1}/3

or, x = 10/3

Hopefully it helped you.

Answer:

3/4 of the eggs are not rotten.

Step-by-step explanation:

a dozen = 12 eggs

3+3+3+3 = 12

3x4 = 12

1/4 = 3/12

2/4 = 6/12

3/4 = 9/12   <--- |

4/4 = 12/12        |

12-3 = 9  ---------|

SO 3/4 eggs are not rotten

Answer:

74 inches

Step-by-step explanation:

87

Answer:

Step-by-step explanation:

The weighted average of the student's scores is ...

  0.20×63 +0.05×97 +0.35×85 +0.40×77 = 78

The student's overall final score is 78.

__

The letter grade earned is between 70 and 80, so is a C.

Answer:

64 - (6 x 8)

Step-by-step explanation:

"The product of 6 and 8" means 6 and 8 multiplied together, therefore this part can be expressed as 6x8. "Subtracted from 64" means that the product of 6x8 is being taken away from 64, therefore it is 64-(6x8).

Answer:

20025

Step-by-step explanation:

the answer is

20.025 m

= 20.025×1000 cm

= 20025 cm

Answer:

  4

Step-by-step explanation:

You are given a table of function values in which x increases by 2, and you want to know the factor by which f(x) increases when x increases by 1.

Let k represent the factor by which f(x) increases when x increases by 1. This means ...

  f(2) = k·f(1)

  f(3) = k·f(2) = k·(k·f(1)) = k²·f(1)

  64 = k²·4

  k² = 64/4 = 16

  k = √16 = 4

The output value increases by a factor of 4 as the input value increases by 1.

__

Additional comment

The table values would also be obtained if the factor of increase were -4. That is, f(x) = -(-4)^x would give the same table. In that case, f(x) would not be a continuous function.

Problem 1

---------------------

Work Shown:

5 people play tennis or soccer

6+5+9+10 = 11+19 = 30 people total

5/30 = (1*5)/(6*5) = 1/6 is the probability of picking someone who plays tennis or soccer.

================================================

Problem 2

---------------------

Work Shown:

6 people play tennis, but not soccer.

There are 30 people total (calculated earlier in problem 1).

6/30 = (1*6)/5*6) = 1/5 is the answer

================================================

Problem 3

---------------------

Work Shown:

5+6 = 11 people play tennis

We focus on these people only due to the phrasing "given they play tennis"

Earlier in the problem, we're asked the probability of someone playing soccer but not tennis; however, this contradicts the "given they play tennis" fact.

Since the two clash, it means that the probability is 0. There is no way that someone plays tennis and not plays tennis at the same time.

If your teacher means to ask "what is the probability of a student playing soccer given they play tennis also?", then the answer would be 5/11 since we have 5 students who play both and 11 students who play tennis.

I have a feeling your teacher meant to ask this, but I'm not 100% sure. I would double check with your teacher.

The equation for maximum number of days (x) Zoey can afford to rent while saving within her budget is 350 > 20 + 42.72x

The given parameters;

cost per day = $42.72

cost per mile, = $0.10

distance planned by Zoey = 200 miles

maximum amount to be spent by Zoey = $350

The maximum number of days (x) Zoey can afford to rent while saving within her budget is calculated as follow;

Total expenses should be less than her maximum budget

200(0.1) + 42.72x ∠ 350

20 + 42.72x ∠ 350

The above equation can also be written as; 350 > 20 + 42.72x

Thus, the equation for maximum number of days (x) Zoey can afford to rent while saving within her budget is 350 > 20 + 42.72x

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