What is the hardest metal
if you get it right I'll give you brainliest

Answer:

-22

Step-by-step explanation:

10=a+9d

the first term is 5 and the common difference is -2

a=5

common difference=-3

5+9(-3)

5+(-27)

5-22

answer is -22

Inverse    \(f^{-1}(x) = \frac{log(x)}{log7}\)    and  \(f(x) = 10^{x}\).

\(f(x) = 7^{x}\)

First, replace f(x) with f(y).

Now, \(y = 7^{x}\)  will become \(x = 7^{y}\)

Taking log on both sides,

log(x) = y(log 7)

y = log(x)/log 7.

Similarly, \(f^{-1}(x) = log_{10}x\)

replace f(x) with f(y).

\(x = f^{-1}(y) = log_{10}y\)

\(y = 10^{x}\)

Hence, \(f(x) = 10^{x}\).

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The measure of arc BC is 720 times the measure of angle BAC.

Given that AC is the diameter of the circle and AB is a chord with a length of 16 units, we need to find BC (the length of the other chord) and mBC (the measure of angle BAC).

To find BC, we can use the property of chords in a circle. If two chords intersect within a circle, the products of their segments are equal. In this case, since AB = BC = 16 units, the product of their segments will be:

AB * BC = AC * CE

16 * BC = 2 * r * CE (AC is the diameter, so its length is twice the radius)

Since the area of the circle is given as 289 square units, we can find the radius (r) using the formula for the area of a circle:

Area = π * r^2

289 = π * r^2

r^2 = 289 / π

r = √(289 / π)

Now, we can substitute the known values into the equation for the product of the segments:

16 * BC = 2 * √(289 / π) * CEBC = (√(289 / π) * CE) / 8

To find mBC, we can use the properties of angles in a circle. The angle subtended by an arc at the center of a circle is double the angle subtended by the same arc at any point on the circumference. Since AC is a diameter, angle BAC is a right angle. Therefore, mBC will be half the measure of the arc BC.

mBC = 0.5 * m(arc BC)

To find the measure of the arc BC, we need to find its length. The length of an arc is determined by the ratio of the arc angle to the total angle of the circle (360 degrees). Since mBC is half the arc angle, we can write:

arc BC = (mBC / 0.5) * 360

arc BC = 720 * mBC

Therefore, the length of the arc BC equals 720 times the length of the angle BAC.

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Answer:ok

Step-by-step explanation:wow

Answer:

y = ½x + ¾

slope (m) = ½

y-intercept(b) = ¾

Step-by-step explanation:

4y - 2x = 3

4y = 2x + 3

y = (2x + 3) ÷ 4

y = 2/4x + 3/4

y = ½x + ¾

slope (m) = ½

y-intercept(b) = ¾

A function is a function that represents the area under a curve. In this case, f is the curve being considered. The function a(x) represents the area under the curve of f from x=0 up to x.

So, if we want to find the area under the curve of f from x=0 up to x=3, we would evaluate a(3) - a(0). This would give us the total area under the curve of f from x=0 to x=3. Similarly, if we have another area function, say b(x), that represents the area under the curve of f from some other starting point (e.g. from x=1), we would use b(x) to find the area under the curve of f from x=1 up to some other x value.
The graph of f, displayed in the figure to the right, represents a function that can be analyzed using various mathematical concepts. In this case, we can consider two area functions for f, denoted as A(x) and B(x), which would allow us to evaluate the areas under the curve of the graph with respect to the x-axis. These area functions can be used to understand properties and behaviors of the function f in different regions of the graph.

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Answer:

slope=3/4

Step-by-step explanation:

4-1

/      = 3/4

9-5

Answer:

$5805.92

Step-by-step explanation:

A= P(1+i)^n

= 5000(1+3%/4)^5×4

=$5805.92

The probability of waiting longer than one hour for a taxi is approximately 0.5488

Let X be the time between arrivals of taxis at the intersection. Then, X follows an exponential distribution with a mean of 10 minutes, i.e., E(X) = 10.

We want to find the probability of waiting longer than one hour (i.e., 60 minutes) for a taxi. Let Y be the waiting time for a taxi. Then, Y = kX, where k is a constant.

We can find k as follows

E(Y) = E(kX) = kE(X) = 10k

Since the mean waiting time is one hour (i.e., 60 minutes), we have

E(Y) = 60 minutes = 1 hour

Therefore, we get

10k = 1

k = 1/10

Now we can find the probability of waiting longer than one hour for a taxi as follows

P(Y > 60) = P(kX > 60) = P(X > 6) [since k = 1/10]

where the last step follows from the fact that X follows an exponential distribution with mean 10, so P(X > x) = e^(-x/10) for any x > 0.

Therefore, we get

P(Y > 60) = P(X > 6) = e^(-6/10) = e^(-0.6) ≈ 0.5488

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The given question is incomplete, the complete question is:

The time between arrivals of taxis at a busy intersection is exponentially distributed with a mean of 10 minutes. (a) What is the probability that you wait longer than one hour for a taxi?

Answer:

15

Step-by-step explanation:

15-6=9 so a-6=9

Answer:

17

Step-by-step explanation:

17-6=9 (to double check your work and make sure it's right you do the opposite [9+6=17] )

The measure of the arc 13cm long with a radius = 1  is 13rad

The arc of a circle is defined as the part or segment of the circumference of a circle. A straight line that could be drawn by connecting the two ends of the arc is known as a chord of a circle. If the length of an arc is exactly half of the circle, it is known as a semicircular arc.

Length of an arc = ∅/360 x 2πr

where ∅ = subtended angle in degree

r = 1 = radius of the complete circle

length = 13

13 =  ∅ /360 x  2 x π x 1

but 2π rad = 360  degrees

substitute  2π rad  for 360 into the equation

13 =  ∅/2π rad  x 2 x π x 1

By cross multiplying

∅ = 13 x 2π rad / 2 x π

∅ = 13 rad

In conclusion, the angle subtended by the arc in radians is 13 rad.

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Answer: 29

Step-by-step explanation: 3 times 7 = 21 + 8 = 29

Answer:

7=3x+8

x=-1/3

Step-by-step explanation:

we just replace f(X) with 7

7=3x+8

-8.    -8

-1=3x

/3. /3

-1/3=x

Hopes this helps please mark brainliest

The domain, range, relative maximum and minimum, the end behavior and the increasing as well as decreasing intervals are all represented below.

In the given function, we need to find the domain, range, relative maximum and minimum, the end behavior and the increasing as well as decreasing intervals.

The function;

f(x) = x⁴ - 4x³ + 3x² + 4x - 4

1. Domain: The domain of the function is all values along the x - axis

Domain = (-∞, ∞)

2. The range is the set of values that corresponds with the domain;

range : [(-9 + 6√3)/4, ∞)

3. The relative maximum of the function is; [(1 + √3)/2, - (9 - 6√3)/4]

4. The relative minimum of the function is  [(1 - √3)/2, - (9 - 6√3)/4]

5. The absolute minimum of the function does not exist

6. The end behavior of the function is "rises to the left and rises to the right"

7. The increasing and decreasing intervals are;  [(1 - √3)/2, (1 + √3)/2)], (2, ∞)

The decreasing interval is ;[-∞,  (1 - √3)/2],  [(1 + √3)/2, 2]

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Answer:

3/2

Step-by-step explanation:

do 20 x 3.14 and then youll have your anwser...id use a calculator btw

Then round it to the nearest whole number and BOOM anwser!!

i got 62.8 so round that and youll have ur anwser

Answer:

(a) aₙ = 22 + 6(n - 1)

(b) The 14th row has 100 seats

Step-by-step explanation:

1. (a) Remember that an arithmetic series has the general formula a + (n - 1)d. Here a = the first term, and d = difference between first and second term, or in other words the difference between the nth and (n + 1)th terms.

aₙ = 22 + 6(n - 1)

This is our iterative rule for this arithmetic series, aₙ = 22 + 6(n - 1).

(b) Here n = the row number. We want to know the row number that has 100 seats. Let's equate the expression '22 + 6(n - 1)' to 100, and solve for n.

100 = 22 + 6(n - 1),

100 = 22 + 6n - 6,

100 = 16 + 6n,

6n = 84,

n = 84 / 6 = 14

=> the 14th row has 100 seats

Answer:

8x^2-7x-4

Step-by-step explanation:

Answer:

8x^2 - 7x -4

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

(x-m) and the quotient. so it woild be x-m/8

The amount of work required to stretch the spring from 30.0 cm to 36.0 cm is 1.411 joules, which can be rounded to three decimal places.

According to Hooke's Law, the amount of work required to stretch or compress a spring by a certain amount is given by the formula:

W = (1/2) k (x2 - x1)²

where W is the work done (in joules), k is the spring constant (in newtons per meter), x1 is the initial displacement (in meters), and x2 is the final displacement (in meters).

In this case, the spring has a natural length of 30.0 cm, which is equivalent to 0.3 meters. To find the spring constant, we can use the fact that a 20.0-N force is required to keep it stretched to a length of 42.0 cm, which is equivalent to 0.42 meters.

Using Hooke's Law, we have

F = k (x2 - x1)20.0 N

= k (0.42 - 0.3) m

=> k = 80.0 N/m

Now we can use Hooke's Law again to find the amount of work required to stretch the spring from 30.0 cm to 36.0 cm, which is equivalent to 0.36 meters.

Using Hooke's Law, we have:

F = k (x2 - x1)W

= (1/2) k (x2 - x1)²W

= (1/2) (80.0 N/m) (0.36 - 0.3) m²W

= 1.411 J

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The value of Erica's investment after 6 years is approximately $4,939.05.

To find the value of Erica's investment after 6 years, we can use the compound interest formula. The formula for compound interest is given as:

A = P\((1 + r/n)^(nt)\)

Where:

A is the final amount or value of the investment.

P is the initial principal or investment amount.

r is the annual interest rate (as a decimal).

n is the number of times the interest is compounded per year.

t is the number of years.

In this case, Erica's initial investment is $4000, the annual interest rate is 4% (or 0.04 as a decimal), and the investment is growing annually. Therefore, we have:

P = $4000

r = 0.04

n = 1 (since the interest is compounded annually)

t = 6 years

Plugging these values into the compound interest formula, we can calculate the final value of the investment:

A = $4000(1 + \(0.04/1)^(1*6)\)

A = $4000(1 + 0.04)^6

A = $4000(1.04)^6

Evaluating this expression, we find:

A ≈ $4,939.05

Therefore, the value of Erica's investment after 6 years is approximately $4,939.05.

This calculation assumes that no additional investments or withdrawals were made during the 6-year period and that the interest rate remains constant at 4% per year.

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Answer: 9.95

Step-by-step explanation:

in similar trapezoids a rearranged formula can be used to solve for the missing base:

\(c^{2} =ab\)  ⇒ \(c=\sqrt{ab}\)

a = the top of the trapezoid

b= the base of the trapezoid

c = the missing base

\(c=\sqrt{(9)(11)}\)

\(c = 9.949\)

A customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day.

Charge for first 5 charged = $ 4.50

Charge for additional time = $ 0.50 per minute

Starting time = 9:35 p.m.

End time = 11:15 p.m.

Total minutes = 100 minutes

Total charge = 4.50 + (95 x 0.50)

                  = 4.50 + 47.50

                  = 52.00

Hence, a customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day i.e. for 100 minutes.

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The simplified expression is 17xy( 3 - 2y).

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

51xy − 34xy²

Now, factorizing

51xy= 3 x 17 × x × y

34xy² = 2 ×17 × x × y ×y

So, the simplification can be

51xy − 34xy²

= 3 x 17 × x × y- 2 ×17 × x × y ×y

= 17xy( 3 - 2y)

Hence, the simplified expression is 17xy( 3 - 2y).

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Therefore, the relative accuracy of features plotted on the map is 500 meters.

To calculate the relative accuracy of features plotted on the map in meters, we need to convert the given accuracy from millimeters to meters.

Given:

Relative accuracy = 90%

Accuracy within 5 mm

To convert millimeters to meters, we divide by 1000:

5 mm = 5/1000 = 0.005 meters

Relative accuracy can be defined as the ratio of the actual accuracy to the map scale. In this case, the map scale is given as 1:100,000, which means that one unit on the map represents 100,000 units in reality.

To calculate the relative accuracy in meters, we multiply the actual accuracy (0.005 meters) by the map scale (100,000):

Relative accuracy = 0.005 meters * 100,000 = 500 meters

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The value for a is equal to 4.

In Mathematics and Geometry, the basic proportionality theorem states that when any of the two (2) sides of a triangle is intersected by a straight line which is parallel to the third (3rd) side of the triangle, then, the two (2) sides that are intersected would be divided proportionally and in the same ratio.

By applying the basic proportionality theorem to the given triangle, we have the following:

EG/CE = GF/DF

(a + 12)/8 = (3a + 2)/7

By cross-multiplying, we have the following:

7a + 84 = 24a + 16

24a - 7a = 84 - 16

17a = 68

a = 68/17

a = 4.

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Answer:

awnser is b dived by a plus k

Answer:

\(r = \sqrt{ {3}^{2} + {( - 7)}^{2} } = \sqrt{9 + 49} = \sqrt{58} \)

\( {x}^{2} + {y}^{2} = 58\)

Answer:

Step-by-step explanation:

(3x + 5y + 12) + (2x - y) +(9x + 2y-2)

= 3x + 5y + 12 + 2x - y + 9x + 2y - 2    {Bring like terms together}

= 3x + 2x + 9x  +5y -y + 2y     + 12 -2

= 14x + 6y +10

Answer: C

Step-by-step explanation: The slope of Function A is 6 and the slope of Function B is 5.