please help me oh my gosh

Answer:

m=98

Step-by-step explanation:

-6/7m=-84 - Divide both sides by -6/7

-84/(-6/7)=84*7/6=98

Answer:

m = 98

Step-by-step explanation:

First multiply the fraction's denominator, which is 7, on both sides to get -6m = -588. Then divide both sides by -6 to get m = 98.

Hope this helps you :)

The range of the function f(x) = x² - 6x with domain of (-7, -2, 1) is calculated to be (91, 16, -5)

The domain is controlled by the input values. considering the points (-7, -2, 1)

The range is solved using the given function

f(x) = x^2 - 6x

substituting for x in the function

for x = 7

= 7² - 6 * -7 = 91

for x = -2

= -2² - 6 * -2 = 16

for x = 1

= 1² - 6 * 1 = -5

The range is (91, 16, -5)

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Answer:

7.3

Step-by-step explanation:

Order of operations rules require that any work inside parentheses be done first.  Thus,

(4 + 2) - 1 + (2.3) becomes 6 - 1 + 2.3

This, in turn, becomes 5 + 2.3, and the final result is 7.3.

Many children develop the ability to do simple arithmetic problems during their early childhood years, typically between the ages of 4 and 6. Correct option is a).

During this time, children start to understand basic mathematical concepts such as counting, addition, and subtraction. They may also begin to recognize and name numbers and use basic math vocabulary. However, it's important to note that every child develops at their own pace and some may show these skills earlier or later than others. It's also important for parents and caregivers to provide opportunities for children to practice and reinforce these skills through activities such as counting objects, playing number games, and solving simple math problems.

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The stopping distance for a car traveling at 50 mph is 208.3 feet.

We can set up a proportion using the given information and the formula for stopping distance:

D = k s²

where D is the stopping distance, s is the speed of the car, and k is a constant of proportionality.

Using the given information, we can solve for k:

75 = k * 30²

k = 75 / (30²) = 0.0833

Now we can use this value of k to find the stopping distance for a speed of 50 mph:

D = 0.0833 * 50² = 208.3 feet

Therefore, the stopping distance for a car traveling at 50 mph is 208.3 feet.

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Answer:

P(x) = 35,900 + 2,800(x-1)

Step-by-step explanation:

P(x)

P(1) = $35,900

P(4) = $44,300

Difference in profits

P(4) - P(1)

= P(3)

= $44,300 - $35,900

= $8,400

Rate of change per year = $8,400 / 3

= $2,800 per year

The linear equation

P(x) = 35,900 + 2,800(x-1)

Where

x = number of years

Joey has 12 red ties, and 6 of the red ties have stripes.

We know that 3/8 of the ties are red, and 1/2 of the red ties have stripes.
First, let's find out how many of the ties are red:
Joey has 32 ties, and 3/8 of them are red.
32 × (3/8) = 12 red ties.
Now, let's find out how many of the red ties have stripes:
There are 12 red ties, and 1/2 of them have stripes.
12 × (1/2) = 6 red ties with stripes.
So, Joey has 12 red ties, and 6 of the red ties have stripes.

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88 units²

To find the area of a shape made up of other shapes, we need to find the area of each object that makes it up (rectangle and 2 triangles in this case) and add them up.

However, in this case we can make it easier by moving the left triangle to the right triangle to form a smaller rectangle with the 2 triangles which would form the trapezoid into a large rectangle.

The formula for a rectangle is length × width.

The length of the formed rectangle is 17 (rectangle length) + 5 (triangle length) which is 22.

The width is 4 which stays the same.

22×4=88

Area = 88 units²

Answer:

it's562because it's forget more times or divide

Answer: m<2 = 18°

Step-by-step explanation:
m<1 + m<2 = 90°

7x - 19 + x + 5 = 90°
     First add common variables; 7x + x = 8x || -19 + 5 = -14
8x - 14 = 90°
     Second add 14 on both sides;

8x - 14 = 90°

     +14   +14

8x = 104°
      Third divide 8 to 104
\(\frac{8x}{8} = \frac{104}{8}\)

x = 13

m<1 7(13) - 19 + m<2 (13) + 5 = 90°
13 * 7 = 91
91 - 19 = 72
72 + 13 = 85
85 + 5 = 90°

m<2 = 13 + 5 = 18°

Hope this helps! :]
--Blu

I know! It's kind if annoying tbh...

The probability of selecting an orange marble is 0.33.

Option B is the correct answer.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

We have,

The number of times each marble is selected.

Green = 4

Black = 6

Orange = 5

Total number of times all marbles are selected.

= 4 + 6 + 5

= 15

Now,

The probability of selecting an orange marble.

= 5/15

= 1/3

= 0.33

Thus,

The probability of selecting an orange marble is 0.33.

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To find the rate at which average cost is changing when 176 belts have been produced, we need to first find the rate at which the average cost is changing when x belts have been produced.

We know that C(x) = 720 + 37x - 0.068x²We can find the average cost by dividing the total cost by the number of units produced. Average cost = Total cost / Number of units produced Let's consider that x belts have been produced. Then the total cost of producing these x belts is C(x).

Thus, the average cost per belt can be calculated as follows: Average cost = C(x) / x The rate at which the average cost is changing when x belts have been produced is given by the derivative of the average cost with respect to the number of belts produced (x).So, we need to differentiate the equation for average cost with respect to x to find the rate at which the average cost is changing.

Thus, the derivative is given by average cost'(x) = (C(x) / x)'Now, the derivative of the cost function C(x) is given as follows:

C'(x) = 37 - 0.136xaverage cost'(x) = (C(x) / x)'= (720 + 37x - 0.068x²) / x '= [37x² - 2x(720 + 37x) - x²(0.068)] / x²= (37x - 1440 - 0.068x²) / x²Putting x = 176, we get: average cost'(176) = (37(176) - 1440 - 0.068(176²)) / 176²= 13.064

Therefore, when 176 belts have been produced, the average cost is changing at 13.064 dollars per belt for each additional belt.

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Answer: c

Step-by-step explanation:

I looked up the answer

Answer:

pretty sure its b

Step-by-step explanation

Answer:

Its D

Step-by-step explanation:

The flux through the circle of radius 3.5 cm the normal to the circle makes an angle of 6° with a line perpendicular to the plates ±0.252 N⋅m²/C.

To find the flux through a circle between the plates, use Gauss's Law. Gauss's Law states that the flux through a closed surface is equal to the total charge enclosed divided by the permittivity of the medium.

The plates are charged with ±21 μC, and the separation between them is 3 mm. The area of the circle is given as 180 cm², and the radius of the circle is 3.5 cm. The normal to the circle makes an angle of 6° with a line perpendicular to the plates.

calculate the flux through the circle using the given information:

Convert the area and radius to meters:

Area = 180 cm² = 0.018 m²

Radius = 3.5 cm = 0.035 m

Calculate the electric field between the plates:

The electric field between two oppositely charged plates is given by:

E = σ / (ε₀ × d)

where σ is the surface charge density, ε₀ is the vacuum permittivity, and d is the separation between the plates.

In this case, the charges on the plates are ±21 μC. Since the charges are spread over the entire area of the plates calculate the surface charge density:

σ = Q / A

where Q is the charge and A is the area of the plates.

σ = ±21 μC / 0.018 m² = ±1166.67 μC/m²

Plugging in the values,

E = ±1166.67 μC/m² / (ε₀ × 0.003 m)

Calculate the electric field component perpendicular to the circle:

The electric field component perpendicular to the circle is given by:

Eₙ = E ×cos(θ)

where θ is the angle between the normal to the circle and a line perpendicular to the plates.

In this case, θ = 6°, so:

Eₙ = E ×cos(6°)

Calculate the flux through the circle:

The flux through the circle is given by:

Φ = Eₙ × A

where A is the area of the circle.

Plugging in the values,

Φ = Eₙ × 0.018 m²

Remember that the electric field (Eₙ) is positive for one plate and negative for the other plate due to the opposite charges. The sign of the flux will depend on the sign of the charge on the plate facing the circle.

Finally, to find the flux in N⋅m²/C,  to convert the units of the electric field from μC/m² to N/C.  that 1 N/C = 1 V/m. So to divide the electric field by the conversion factor of 1 million.

Let's calculate the flux:

Calculate the electric field:

E = ±1166.67 μC/m² / (8.85 × 10⁻¹² F/m ×0.003 m)

Calculate the electric field component perpendicular to the circle:

Eₙ = E ×cos(6°)

Calculate the flux through the circle:

Φ = Eₙ × 0.018 m²

Convert the electric field units to N/C:

E = E / 1,000,000

The values and calculate the flux:

Calculate the electric field:

E = ±1166.67 μC/m² / (8.85 × 10⁻¹² F/m × 0.003 m) = ±14,000,000 V/m

Calculate the electric field component perpendicular to the circle:

Eₙ = ±14,000,000 V/m × cos(6°)

Calculate the flux through the circle:

Φ = Eₙ × 0.018 m²

Convert the electric field units to N/C:

E = E / 1,000,000 = ±14 N/C

Plugging in the values,

Φ = (±14 N/C) × 0.018 m² = ±0.252 N⋅m²/C

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Answer:

Subsitution

Step-by-step explanation:

We have the equations:

x=2y-1

3x+y=11

The 3 methods of solving systems of equations are:

graphing

substitution

addition/elimination

Graphing involves graphing the two equations and finding their point of intersection, which is the answer

Substitution involves isolating one of the variables in one of the equations, then substituting the resulting expression into the other equation to find both numbers

Addition/Elimination involves adding the two equations together to clear a variable, solving for the other variable, and substituting the answer to the first variable in one of the equations to find the value of the cleared variable from before

Since we have x already isolated onto one side in the first expression, we can easily substitute it as 2y-1 in the second equation.

Therefore, substitution is the best method to solve this graph.

hope this helps!

Answer:

hi

Step-by-step explanation:

The inequality to represent the possible number of hours Kat can afford to book the DJ is 80x + 225 ≤ 970 and one possible length Kat can afford to book the DJ is 9 hours.

(a) Let x be the number of hours that Kat can book the DJ. Then, the total cost of the DJ is 80x, and the total cost of the party is 80x + 225.

Since Kat has $410 saved and will earn another $560, the total amount she can spend on the party is $410 + $560 = $970.

Therefore, we can write the following inequality to represent the possible number of hours Kat can afford to book the DJ:

80x + 225 ≤ 970

b) To solve for x, we can start by subtracting 225 from both sides of the inequality:

80x ≤ 745

Then, we can divide both sides by 80:

x ≤ 9.3125

Since Kat can only book the DJ in whole hours, the largest integer less than or equal to 9.3125 is 9. Therefore, one possible length Kat can afford to book the DJ is 9 hours.

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The value of the expression  Σ(2k + 1) using binomial expansion is (k + 1)^2.

To evaluate the expression Σ(2k + 1) using the binomial expansion, we can start by rewriting the sum using sigma notation:

Σ(2k + 1) = (2(0) + 1) + (2(1) + 1) + (2(2) + 1) + ... + (2(k) + 1)

This can be simplified as:

Σ(2k + 1) = 1 + 3 + 5 + ... + (2k + 1)

Now, we can use the formula for the sum of an arithmetic series to find the value of this expression. The formula is given by:

Sn = (n/2)(a + l)

where:

Sn represents the sum of the series

n represents the number of terms in the series

a represents the first term

l represents the last term

In this case, the first term, a, is 1, and the last term, l, is 2k + 1. The number of terms, n, can be found by considering that the series goes up to k, so there are k + 1 terms in total. Therefore, we have:

n = k + 1

a = 1

l = 2k + 1

Substituting these values into the formula, we get:

Sn = ((k + 1)/2)(1 + (2k + 1))

Simplifying further:

Sn = ((k + 1)/2)(2k + 2)

= (k + 1)(k + 1)

= (k + 1)^2

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Answer: Y = -3x

Step-by-step explanation:not needed

An English teacher, gives pop quizzes to her students every marking period. (D. Fixed interval schedule of reinforcement.)

The other options listed are not applicable in this scenario:

A. Variable interval schedule of reinforcement: This schedule involves providing reinforcement after varying time intervals. Mrs. Jackson's quizzes occur at fixed intervals, not varying intervals.

B. Variable ratio schedule of reinforcement: This schedule involves providing reinforcement after a varying number of responses. The pop quizzes are not contingent on the number of responses from the students.

C. Fixed ratio schedule of reinforcement: This schedule involves providing reinforcement after a fixed number of responses. The pop quizzes are not contingent on the number of responses from the students.

D. Fixed interval schedule of reinforcement :fixed interval schedule of reinforcement involves providing reinforcement  at a fixed time interval. Mrs. Jackson gives the pop quizzes every marking period, which is a predetermined fixed interval of time. This schedule of reinforcement is characterized by a steady rate of response from the students, with an increase in responding closer to the time when the reinforcement is expected.

E. Interval ratio schedule of reinforcement: This is not a recognized schedule of reinforcement. The correct term would be fixed interval or variable interval schedule of reinforcement.

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Answer:

8) 92°

9) 44°

Step-by-step explanation:

8) 92°

9) 44°

Answer:

175

Step-by-step explanation:

since 1 was 152 you have to add more to get number 8

Answer:

$55

Step-by-step explanation:

X represents the amount of hours that Jack shovels for and it says that he shoveled for four hours. All you have to do it plug 4 into the equation. It will be 10(4)+15. After you simplify it you will see that he gets 55 dollars for four hours of work.

Therefore, the value of n that makes the system of equations true is n = 10.

Given:

p = 2n

p - 5 = 1.5n

Substituting the value of p from the first equation into the second equation, we have:

2n - 5 = 1.5n

Next, we can solve for n by subtracting 1.5n from both sides of the equation:

2n - 1.5n - 5 = 0.5n - 5

Simplifying further:

0.5n - 5 = 0

Adding 5 to both sides of the equation:

0.5n = 5

Dividing both sides by 0.5:

n = 10

Therefore, the value of n that makes the system of equations true is n = 10.

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Answer:

The expression (√2 – √3) (√2 – √3) simplifies to 2 - 2√6 + 3, which can be further simplified to 3 - 2√6.

Answer: Incomplete question

Step-by-step explanation: The question does not provide a diagram, and that makes it difficult to determine which side is labelled as B. Nevertheless I will give you clues to help you answer your question by explaining  this topic which is SIMILAR TRIANGLES.

When you have been given two triangles with a scale factor, the scale factor is an important part of answering the question eventually.

Consider a triangle which I shall call triangle 1, with sides abc and another triangle ABC, which I shall call triangle 2. The scale factor is 8, which means triangle 1 can be enlarged into a similar triangle by simply multiplying any corresponding side by 8. Hence, if in triangle abc, you have a side that measures 8 centimetres, the corresponding side in triangle ABC would be 8 times 8 which equals 64 centimetres.

The question states that side A corresponds with a side measuring length 2 centimetres. That means side A is derived as 2 times 8 which equals 16 centimetres, as explained above (and as shown in the question). Therefore side B which is yet unknown shall also be the corresponding side in triangle 1 multiplied by 8.

Since the corresponding side was not stated, I shall assume for the sake of explanation that the corresponding side is 10 centimetres. That means, side B would now be derived as 10 times 8 which equals 80 centimetres.

These can be expressed mathematically as follows;

If A = 16, a = 2 and b = 10 then B would be calculated as follows;

A/a = B/b

16/2 = B/10

By cross multiplication, you now have

16 * 10 = 2 * B

160/2 = B

80 = B

Following these steps along with the explanations, the length of side B can be derived if the value of its corresponding side is given or a diagram is provided.

Answer:

its 40 because the dude above is an but face (sorry) (not sorry u suk)

Step-by-step explanation:

welcum

We need to use and area model to find the factors of 31. But, we also can see that 31 is a prime number, so it's divisible by 1 and by itself, 31. So,

The number 31 has not other factors.

The probability of getting 9 or more heads when flipping 12 biased coins once is approximately 0.4013 or 40.13%.

Hence, the correct option is C.

To solve this problem, we can use the binomial distribution formula, which gives the probability of getting k successes in n independent trials, where the probability of success is p.

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

Where (n choose k) is the number of ways to choose k items from a set of n items, and is calculated as

(n choose k) = n! / (k! * (n - k)!)

For this problem, we have 12 coins that are flipped once each, and the probability of getting a head for each coin is given.

n = 12 (the number of trials)

p = 0.65, 0.6734, 0.3467, 0.0016, 0.0938 (the probability of success for each coin)

k = 9, 10, 11, 12 (the number of successes we're interested in)

Then, we can calculate the probability of getting 9 or more heads by adding up the probabilities of getting 9, 10, 11, or 12 heads

P(9 or more heads) = P(9 heads) + P(10 heads) + P(11 heads) + P(12 heads)

P(9 heads) = (12 choose 9) * 0.65^9 * 0.35^3 = 0.1949

P(10 heads) = (12 choose 10) * 0.6734^10 * 0.3266^2 = 0.1919

P(11 heads) = (12 choose 11) * 0.3467^11 * 0.6533^1 = 0.0145

P(12 heads) = (12 choose 12) * 0.0938^12 * 0.9062^0 = 0.0000000967

Therefore,

P(9 or more heads) = 0.1949 + 0.1919 + 0.0145 + 0.0000000967 = 0.4013

Hence, the correct option is C.

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-- The given question is not correct, the correct question is

" If 12 biased coins are flipped once, what is the probability of getting 9 or more heads? The colns are biased such that the probability of a head with any coin is A. 0.65 B. 0.6734 C. 0.4013 D. 0.0016 E. 0.0938" --

The center of the circle is (4, -3) and the radius is 4.

What is complete perfect square process?

Completing the square is a process in algebra where a quadratic expression of the form ax² + bx + c is transformed into a perfect square trinomial of the form (x + p)² + q, where p and q are constants.

To complete the square for the given equation, we need to rearrange the terms as follows:

x² - 8x + y² + 6y + 21 = 0

Completing the square for the x terms:

x² - 8x = x² - 8x + 16 - 16 = (x - 4)² - 16

Completing the square for the y terms:

y² + 6y = y² + 6y + 9 - 9 = (y + 3)² - 9

Substituting these results back into the original equation, we get:

(x - 4)² - 16 + (y + 3)² - 9 + 21 = 0

(x - 4)² + (y + 3)² = 4²

So the equation of the circle in standard form is:

(x - 4)² + (y + 3)² = 16

Thus, the center of the circle is (4, -3) and the radius is 4.

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