Please help I’ll mark brainlist

9514 1404 393

Answer:

  16

Step-by-step explanation:

Radii of the same circle are the same, so we have ...

  3x -2 = 4x -8

  6 = x . . . . . add 8-3x

  3x -2 = 3(6) -2 = 16 . . . . the radius of the circle

Sure! Here's the 99.5% confidence interval for the true population mean textbook weight: (49.433, 60.567) ounces.

To construct a confidence interval for the true population mean textbook weight, we can use the formula:

Confidence Interval = (sample mean) ± (critical value) * (standard deviation / √(sample size))

Given the information provided:

- Sample mean = 55 ounces

- Population standard deviation = 11.4 ounces

- Sample size = 32 textbooks

First, we need to find the critical value corresponding to a 99.5% confidence level. Since the sample size is relatively small (32 textbooks), we can use a t-distribution instead of a normal distribution.

The degrees of freedom for a t-distribution are given by (sample size - 1). In this case, the degrees of freedom will be (32 - 1) = 31.

Using a t-table or a statistical calculator, we find the critical value for a 99.5% confidence level and 31 degrees of freedom is approximately 2.750.

Now, we can calculate the confidence interval:

Confidence Interval = 55 ± 2.750 * (11.4 / √32)

Confidence Interval = 55 ± 2.750 * (11.4 / 5.657)

Confidence Interval = 55 ± 5.567

Therefore, the 99.5% confidence interval for the true population mean textbook weight is approximately (49.433, 60.567) ounces.

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Answer:

The simplified form is 5x-7 since there's no equals sign.

Step-by-step explanation:

12x-5-7x-2

Then, I combined like variables and got 5x-7.

Answer:

they add one half to each number

In the context of igneous rock formation, the stove represents the Earth's interior where molten rock, or magma, is formed. The sugar represents the minerals or elements that make up the magma and later crystallize to form igneous rocks.

The formation of igneous rocks begins deep within the Earth's interior, where extremely high temperatures and pressure cause rocks to melt and form molten rock called magma. This process is analogous to a stove, which generates heat to melt solid substances. The stove represents the Earth's interior as the source of the molten rock, where the conditions necessary for rock melting and magma formation occur.

Once the magma is formed, it contains various minerals and elements in a molten state. These minerals and elements can be compared to sugar, which dissolves and mixes within the magma. The sugar represents the composition of the magma, which consists of different minerals and elements in a liquid state.

As the magma cools, the minerals and elements within it begin to solidify and crystallize, similar to how sugar crystallizes when a sugar solution cools. The crystallization process occurs as the magma loses heat, either underground or when it reaches the Earth's surface as lava. These solidified minerals and elements form igneous rocks with a crystalline structure. Therefore, in the context of igneous rock formation, the stove represents the Earth's interior where magma is formed, and the sugar represents the minerals and elements that make up the magma and later crystallize to form igneous rocks.

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Answer:

81.7

Step-by-step explanation:

I did the math.

Good luck (:

Answer:

Steven needs a total score of 320 to have a mean of 80 and Steven has obtained 245 so far. So, he needs atleast 75 more to qualify for the maths team.

Answer:

y=-2x-13

Step-by-step explanation:

y=mx+b

3=-2(-8)+b

3=16+b

3-16=b

-13=b

The equation which represents the provided function after it has been translated 5 units up and 9 units to the right is (1.6)ˣ⁻⁹+5.

Transformation of a function is shifting the function from its original place in the graph.

Types of transformation-

The provided function in the problem is,

\(f(x) = (1.6)^x\)

The function has translated 5 units up. Thus, substrate 5 units inside the function.

\(g(x) = (1.6)^{x-5}\)

The function has translated units to the right. Thus, add 9 units outside the function as,

\(g(x) = (1.6)^{x-5}+9\)

Thus, the equation which represents the provided function after it has been translated 5 units up and 9 units to the right is,

\(g(x) = (1.6)^{x-5}+9\)

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Answer:

C

Step-by-step explanation:

ur wlcm

Answer:

It should be the first answer.

Step-by-step explanation:

The first answer says "If Nemo is a fish, then he swims". That makes sense. Then the second one says "If Nemo does swim, then he is a fish". That would make sense, but if my name was Nemo, I can swim. That doesn't mean I'm a fish. The the third one says "If Nemo is not a fish, then he doesn't swim". That doesn't make sense. Say my name is Nemo. I'm not a fish. I can swim though!

Answer:

If Nemo is a fish, then he swims.

Step-by-step explanation:

The contrapositive is

If A implies B then not B implies not A.

If Nemo does not swim, then he is not a fish, so:

The contrapositive is:  If Nemo is not not a fish then he does not not swim.

= If Nemo is a fish, then he swims.

The correct option is that in science, a theory encompasses many hypotheses.

In science, a theory is a well-established explanation that is supported by scientific evidence and is extensively tested through experimentation and observation.

It's a big idea that includes several connected hypothese that have been thoroughly investigated and found to be true. A theory that hasn't been put to the test is called a hypothesis.

A hypothesis is a proposed explanation that is subject to further testing. It's an untested hypothesis that hasn't yet undergone experimental validation. Theories are the result of a drawn-out and labor-intensive process of experimentation and observation.

They can never be established as an absolute answer to a scientific problem. Instead, they lay the groundwork for additional investigation and experimentation in that field of study.

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Answer:

Hope this will help you....

Answer:

B.

Step-by-step explanation:

(4, 6, 7)

Answer:

The answer is b.(4,6,7)

Step-by-step explanation:

I used this formula on each.

Pythagorean theorem: a² + b² = c²

a^2 = 4^2 = 16

b^2 = 6^2 = 36

16+36= 52

√52 = 7.21110255093

The other three gave an exact awnser but b.(4,6,7) didn't even though close.

Answer:

25% chance

Step-by-step explanation:

Because a penny has two sides that is 50 percent and a cube 6 sides that's 16 percent. then you subtract 16 from 50 to get a 34 percent chance of probably.

Answer:

\(Column\ 1: 4y^2\)

\(Column\ 2: 6x^3+4xy+3y\)

Step-by-step explanation:

Given

\(24x^3y^2+16xy^3+12y^3\)

Required

Determine the product from the given column

\(24x^3y^2+16xy^3+12y^3\)

Factor our \(y^2\)

\(24x^3y^2+16xy^3+12y^3 = y^2(24x^3 + 16xy + 12y)\)

Factor out 4

\(24x^3y^2+16xy^3+12y^3 = 4y^2(6x^3 + 4xy + 3y)\)

So: the factors are:

\(4y^2\) and \(6x^3 + 4xy + 3y\)

This gives:

\(Column\ 1: 4y^2\)

\(Column\ 2: 6x^3+4xy+3y\)

We need to know about z-score to solve the problem. The probability that x will be less than 55 is 0.84

A z-score tells us how many standard deviations away an individual data value falls from the mean. Once we find the z-score we can get the probability from the z-table. In the given question we know that X is normally distributed random variable with mean 50 and standard deviation 5, we need to find out the probability that x will be less than 55.

z-score= x-μ/σ=55-50/5=1

In z-table , the probablity for z-score=1 comes to 0.84

Therefore the probability that x will be less than 55 is 0.84.

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The distance between person A and the balloon is given as follows:

367 m.

The three trigonometric ratios are the sine, the cosine and the tangent of an angle, and they are obtained according to the formulas presented as follows:

For the angle of 33º, we have that:

Hence the distance is obtained as follows:

sin(33º) = 200/d

d = 200/sine of 33 degrees

d = 367 m.

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Answer:

Step-by-step explanation:

y = x² -10x + 16

y = (x - 8) (x - 2)

solve each when y = 0

x - 8 = 0

x - 8 + 8 = 0 +8

x = 8

and

x - 2 = 0

x - 2 + 2 = 0 +2

x = 2

SO solutions are (8, 0) and (2, 0)

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(10,8)

Equation Form:

x=10,y=8

Step-by-step explanation:

The approximate area under the curve of f(x) from x=0 to x=2 using a right-hand sum with four intervals is 4.25.

To approximate the area under the curve of the function f(x) = 4 - x^2 from x=0 to x=2 using a right-hand sum with four intervals, we first need to divide the interval [0, 2] into four equal subintervals of length h = (b-a)/n = (2-0)/4 = 0.5. The four subintervals are [0, 0.5], [0.5, 1], [1, 1.5], and [1.5, 2].

Next, we find the height of the curve at the right endpoint of each subinterval and multiply it by the width of the subinterval to get the area of the rectangle that approximates the region under the curve. Using the right endpoints of the subintervals, we have:

f(0.5) = 4 - (0.5)^2 = 3.75

f(1) = 4 - (1)^2 = 3

f(1.5) = 4 - (1.5)^2 = 1.75

f(2) = 4 - (2)^2 = 0

area of each rectangle:

A1 = f(0.5) * h = 3.75 * 0.5 = 1.875

A2 = f(1) * h = 3 * 0.5 = 1.5

A3 = f(1.5) * h = 1.75 * 0.5 = 0.875

A4 = f(2) * h = 0 * 0.5 = 0

the approximate area under the curve of f(x) from x=0 to x=2:

A ≈ A1 + A2 + A3 + A4 = 1.875 + 1.5 + 0.875 + 0 = 4.25

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Answer:

-(2/3)

Step-by-step explanation:

The standard form of a linear equation is y=mx+b, where m is the slope and b is the y-intercept (the value of y when x=0).

y= -(2/3)x has m of -(2/3) and b of 0. It intersects the y-axis at 0 when x=0.

See the attached graph.

The perimeter of the rectangular path is 64 ft

Rectangle is a type of quadrilateral that has its parallel sides equal to each other, opposite sides are equal to each other, and all the angle are equal to 90 degrees.

How to determine this

The perimeter of a Rectangle = 2 ( Length + Width)

Where the Width = 2 ft

Length = 28 ft longer than Width

i.e W + 28

Length = 2 + 28 = 30 ft

To calculate the perimeter if the path

Perimeter = 2( 30 + 2)

Perimeter = 2(32)

Perimeter = 64 ft

Therefore, the perimeter of the rectangular path is 64 ft

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Answer:

The area of an equilateral triangle is (√3/4) x (9 3 cm)².

The company's total amount of income that is earned is $136,500.

Profit is the difference between revenue and expenses. Income is the total revenue that is earned by a company before any deductions. Expenses include all the cost incurred in running a business. Income is the sum of profit and expenses. A venture is profitable only if the revenue is greater than expenses.

Profit = income - expenses

Income = profit + expenses

$35,000 + 101,500 = $136,500

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Solution

A standard deck of cards has 4 suits: Hearts, Clubs, Spades, and Diamonds

Each suite contains an ace, 2, 3, 4,5,6,7,8,9,10, jack, queen, and king, a total of 13 cards

Therefore a standard pack of cards has 4 x13 cards = 52 cards/elements

An expression for probability is

The question requires us to find the probability of picking an Ace or a Club

No of Aces = 4 across all the suits

No of Clubs = 4 across all suits

Total number of cards = 52

The probability of picking an Ace or a Club is

Answer = 2/13

Answer:

I guess HEF is congruent to GFH

But it's just guess I'm not confirm

Answer:

A.

Step-by-step explanation:

the triangle HGF is congruent to traingle FEH

To find the equation of the tangent line to the curve y = tan²(2x) at x = π/4, we need to determine the slope of the tangent line at that point and then use the point-slope form of a line to write the equation.

First, let's find the derivative of y with respect to x. Using the chain rule, we have:

dy/dx = 2tan(2x) sec²(2x).

Now, let's substitute x = π/4 into the derivative:

dy/dx = 2tan(2(π/4)) * sec²(2(π/4))

      = 2tan(π/2) * sec²(π/2)

      = 2(∞) * 1

      = ∞.

The derivative at x = π/4 is undefined, indicating that the tangent line at that point is vertical. Therefore, the equation of the tangent line is x = π/4. Note that the equation y = 2/tan(2x) (sec²(2x) + 1/2) is not the equation of the tangent line, but rather the equation of the curve itself. The tangent line, in this case, is vertical.

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Answer:

200

Step-by-step explanation:

200$ - 150$ = 50$

50$ : 0.25$ = 200

Answer:

In explanation

Step-by-step explanation:

Given:

Flat fee: 150 $

Fee per mile: 0.25 $

Total: 200 $

We use this equation to determine the total costs, T:

\(T= 150+0.25(m)\)

With 200 dollars, we solve for m

200 = 150+0.25m

50=0.25m

m=200

Hope this helped! Have a good day.

Answer:

The first answer.  8x^15 - 125y^3

Step-by-step explanation:

...because 8 is the cube of 2 and x^15 is the cube of x^5; also 125 is the cube of 5 and y^3 is the cube of y.

8x^15 - 125y^3 = (2x^5)^3 - (5y)^3

To differentiate the function f(x) = qx + r/sx + t, where q, r, s, and t are constants, the derivative is given by f'(x) = q - (r/s) * (1/x^2).

To differentiate the given function, we need to apply the rules of differentiation. Let's break down the steps:

1. Differentiate qx with respect to x: Since q is a constant, the derivative of qx is simply q.

2. Differentiate r/sx with respect to x: We can rewrite r/sx as r * (s * x)^(-1). Applying the power rule of differentiation, the derivative of (s * x)^(-1) is (-1) * (s * x)^(-1 - 1) * s = -s/x^2.

3. Differentiate t with respect to x: Since t is a constant, the derivative of t with respect to x is 0.

4. Combining the derivatives obtained from the previous steps, we have f'(x) = q - (r/s) * (1/x^2).

Therefore, the derivative of the given function f(x) = qx + r/sx + t, where q, r, s, and t are constants, is f'(x) = q - (r/s) * (1/x^2).

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