28−7x² =
Help me i will give you brainleist if you get it right .

Answer:

The answer is 38 euros.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

(1, 6)

Step-by-step explanation:

While a function may NOT have two y-values assigned to the same x-value

(1,6) would not work because the x-value of 1 had already been used at the point (1,-3)

Answer:

70

Step-by-step explanation:

Angle Q and angle P are supplementary angles, so they add up to 180 degrees.

6x + 4 + 10x = 180

16x + 4 = 180

16x = 176

x = 176/16

x = 11

Put x in angle Q as 11 and solve.

6(11) + 4

66 + 4

= 70

Angle Q measures 70 degrees.

The expression that represents a cubic expression is equals to the 10x³ − 6x² − 9x + 12.

The expression is formed with variable and constant with arithmetic operation. A polynomial having degree three is known as a cubic polynomial or we it is also called a cubic expression.

ax³ + bx² + cx + d = 0.

Now, we check each part one by one :

a) 19x⁴ + 18x³ − 16x² − 12x + 1 , which is a four degree polynomial, so it is not cubic expression.

b) 10x³ − 6x² − 9x + 12, it is a three degrees polynomial with cofficient of x³ ≠0 so, it is a cubic expression.

c) −9x² − 3x + 4, it is a quadratic expression with degree two. So, it is not cubic.

d) 4x - 3, here degree of polynomial is one so, it is not cubic. Hence, required expression is 10x³ − 6x² − 9x + 12.

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Complete question:

Choose the expression that represents a cubic expression.

a) 19x⁴ + 18x³ − 16x² − 12x + 1

b) 10x³ − 6x² − 9x + 12

c) −9x² − 3x + 4

d) 4x - 3

Answer:

2 inches

Step-by-step explanation:

\(\frac{.25}{4} =\frac{x}{32} \\\)

(0.25*32)/4=2

Answer:

2 inches

Step-by-step explanation:

please mark this answer as brainliest

\(20\frac{ 3}{7}\)  is the circumference of a circular swimming pool with a diameter of 6 1/2 ft.

Circumference of a circle is πd,  where d is the diameter

From the question

d = 6½ feet = 13/2 feet

Circumference is

π × 13/2

= 22/7 × 13/2

= 143/7

= \(20\frac{3}{7}\)

What's the circumference?

The meaning of circumference is the distance around a circle or any twisted geometrical shape. It's the one- dimensional direct dimension of the boundary across any two- dimensional indirect face. In figure, the circumference( from Latin circumferens, meaning" carrying around") is the border of a circle or cirque. That is, the circumference would be the bow length of the circle, as if it were opened up and uncurled out to a line member.

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The daily output achieved by maximum cycle time cannot be calculated by the given information. But, the daily output achieved by minimum cycle time is 1688 units per day (approx).

Given that the line will operate for 450 minutes per day.

The maximum cycle time can be calculated using the formula:

Maximum cycle time = Operating time / Minimum number of cycles

Maximum cycle time = 450 / 1

= 450 minutes

The minimum cycle time can be calculated using the formula:

Minimum cycle time = Operating time / Maximum number of cycles

So,

Minimum cycle time = 450 / (450/20)

= 20 minutes

a. The maximum cycle time is 450 minutes, and the minimum cycle time is 20 minutes.

Maximum cycle time = 450 minutes

Minimum cycle time = 20 minutes

b. The daily output achieved by maximum cycle time can be calculated using the formula:

Daily output = (Operating time * Efficiency) / Cycle time

We know that the operating time is 450 minutes.

Efficiency is not given.

Hence, the daily output cannot be calculated by the given information.The daily output achieved by the minimum cycle time can be calculated using the formula:

Daily output = (Operating time * Efficiency) / Cycle time

Daily output achieved by minimum cycle time = (450 * 75%) / 20

Daily output achieved by minimum cycle time = 1688 units per day (approx)

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Answer:

first find the width

=11cm

find area

7×11=77

and=77

Answer:

B

Step-by-step explanation:

Answer:

B. 16m - 5 - 9m

Step-by-step explanation:

The "-" outside of the parentheses also can be interpreted as -1.

So multiply -1 with 5 and 9m within the parentheses.

That gets you 16m - 5 - 9m.

Check the picture below.

Answer:

a) 16 vehicles

b) (x + y) vehicles

Step-by-step explanation:

According to US traffic laws, bicycles are also considered to be vehicles since they are a mode of transport as they can attain speeds far more than humans walking.

Now, if there are 12 bicycles and 4 cars, it means;

Number of vehicles = 12 + 4 = 16 vehicles.

If there are x bicycles and y cars, it means;

Number of vehicles = (x + y) vehicles

Answer:

Can you give me any more context?

Answer:

-1

Step-by-step explanation:

2y+6=1 -3y

add three to both sides and minus 6 from both sides becasue you want to get y by itself

5y=-5

now both sides by 5

y=-1

Answer:

y=−1

Step-by-step explanation:

2y+6=1−3y

Step 1: Simplify both sides of the equation.

2y+6=1−3y

2y+6=1+−3y

2y+6=−3y+1

Step 2: Add 3y to both sides.

2y+6+3y=−3y+1+3y

5y+6=1

Step 3: Subtract 6 from both sides.

5y+6−6=1−6

5y=−5

Step 4: Divide both sides by 5.

y=−1

Answer:

1: y= -15x

2: in the ss

Step-by-step explanation:

The probability the property has oil, given that both tests report positive.

P(O|A∩B) = 0.6 * 0.5 / 0.8 = 0.375

P(O|A∩B) = P(A∩B|O)P(O) / P(A∩B)

P(A∩B|O) = 0.8 * 0.75 = 0.6

P(O) = 0.5

P(A∩B) = P(A|O)P(O) + P(A|¬O)P(¬O)

P(A|O) = 0.8, P(¬O) = 0.5

P(A∩B) = 0.8 * 0.5 + 0.8 * 0.5 = 0.8

P(O|A∩B) = 0.6 * 0.5 / 0.8 = 0.375

The study of random events is the focus of probability theory, a subfield of mathematics. It is impossible to predict the outcome of a random event before it happens, although it could take any of numerous different forms. It is believed that chance played a role in how things turned out.

Information on possibility of occurrence is provided by probability. For instance, meteorologists can forecast the likelihood of rain by looking at weather patterns. Probability theory is utilized in epidemiology to comprehend how exposures and the risk of health impacts are related.

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Answer:

50 ohms.

Step-by-step explanation:

Volts = current * resistance

110 = 2.2 * r

R = 110 / 2.2

  = 50 ohms.

The given variation y = 7x is a direct variation where any increase in the variable x also increases the value of the variable y.

The given variation is represented as -

y = 7x

We have to identify if the given variation is direct or inverse or joint or combined.

Let us first the different mathematical relationships mentioned here.

Now that we know the definitions of different types of variations, let us look into the given variation, which is -

y = 7x

We can see that the variable y is 7 times the multiple of another variable x. Thus, this is a case of direct variation such that any increase in the variable x also increases the value of the variable y.

Therefore, the given variation y = 7x is a direct variation type.

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Step-by-step explanation:

press the picture to see the answer I swear it has a solution too

The probability of four successes in this binomial distribution is 0.2668, or approximately 26.68%. This means that if we conduct 9 trials with a 20% chance of success on each trial, we would expect to get exactly 4 successes with a probability of 0.2668.

To find the probability of four successes in a binomial random variable, we use the formula for the probability mass function (PMF) of a binomial distribution:

P(X=k) = (n choose k) * \(p^k\) * (1-p)\(^(n-k)\)

where n is the number of trials, p is the probability of success on each trial, k is the number of successes, and (n choose k) is the binomial coefficient, which represents the number of ways to choose k successes from n trials.

In this case, we have n = 9, p = 0.2, and k = 4. So, we can plug these values into the formula:

P(X=4) = (9 choose 4) * 0.\(2^4\) * (1-0.2)\(^(9-4)\)

= (126) * 0.\(2^4\) * 0\(.8^5\)

= 0.2668

Therefore, the probability of four successes in this binomial distribution is 0.2668, or approximately 26.68%. This means that if we conduct 9 trials with a 20% chance of success on each trial, we would expect to get exactly 4 successes with a probability of 0.2668.

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In this problem, we are dealing with a random variable related to people's opinions on a new building project. We are given four options for the correct wording of the random variable and need to determine the correct one. Additionally, we are asked to calculate probabilities associated with the number of people who favor the new building project, ranging from exactly 4 to at most 6.

a) The correct wording for the random variable is "rv = the number of people who are in favor of a new building project." This wording accurately represents the random variable as the count of individuals who support the project.

b) To calculate the probability that exactly 4 people favor the new building project, we need to use the binomial probability formula. Assuming the probability of a person favoring the project is p, we can calculate P(X = 4) = (number of ways to choose 4 out of 10) * (p^4) * ((1-p)^(10-4)). The value of p is not given in the problem, so this calculation requires additional information.

c) To find the probability that less than 4 people favor the new building project, we can calculate P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3). Again, the value of p is needed to perform the calculations.

d) The probability that more than 4 people favor the new building project can be calculated as P(X > 4) = 1 - P(X ≤ 4) = 1 - (P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4)).

e) The probability that exactly 6 people favor the new building project can be calculated as P(X = 6) using the binomial probability formula.

f) To find the probability that at least 6 people favor the new building project, we can calculate P(X ≥ 6) = P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10).

g) Finally, to determine the probability that at most 6 people favor the new building project, we can calculate P(X ≤ 6) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6).

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Answer:

40,000

Step-by-step explanation:

Answer:

B

Step-by-step explanation: HOPE IT HELP

Answer: $1.05 per orange

Step-by-step explanation:

12.33 - 2.88 = 9.45

9.45 ÷ 9 = 1.05

The length and the width are 21cm and 16cm respectively.

The formula for calculating the perimeter of a rectangle is expressed as;

P = 2(l +w)

Given that;

But we have that;

Length = 5 + w

Substitute the value

74 = 2(5 + w + w)

collect like terms

74=2 (5 + 2w)

expand the bracket

64 = 4w

Make 'w' the subject of formula

w = 16cm

Then, length = 5 + 16 = 21cm

Hence, the values are 16cm and 21cm

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To solve for x, we just need to compute the inverse of A (if it exists) and multiply it by b. If A is invertible, then this method will give us the unique solution to the linear system Ax=b.

To solve a linear system of the form Ax=b using inverse matrices, we can first find the inverse of matrix A (if it exists) and then multiply both sides of the equation by \(A^-1\), giving us:

\(A^-1Ax = A^-1b\)

Since\(A^-1A\) is the identity matrix I, we can simplify the left-hand side to just x:

\(x = A^-1b\)

However, it's worth noting that computing the inverse of a matrix can be computationally expensive, particularly for large matrices.

So, while using inverse matrices can be a useful technique for solving small systems, it may not be the most efficient approach for larger systems. In those cases, other techniques such as Gaussian elimination or LU decomposition may be more appropriate.

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