The radius of a circle is 10 miles. What is the length of a 90° arc?

Answer:

C:  (4, 8)

Step-by-step explanation:

Rewrite the given equation x² - 8x = -y² + 16y - 44 in std. form:

                                              x² - 8x + 16 - 16 + y² - 16y + 64 =  64 - 44,  or

                                                 (x - 4)²  + (y - 8)² = 64 - 44 + 16

         Comparing this to            (x - h)² + (y - k)² = 6²

we see that h = 4 and k = 8.  The radius is 6.  The center is at (4, 8) (Answer C).

14.(22) = 14.(20 + 2)

We still have 14 multiplying 22 but now it will multiply it by 20 and sum it after multiply by 2

So we have the distributive proppertie.

Answer:

distributive property.

Step-by-step explanation:

If you rewrite the problem 14(22) as 14(20+2) so that you can use mental math

22 is written as 20+2

so we got 14(20+2)

to multiply this we distribute 14 inside the parenthesis

we multiply 14 with 20 and then multiply 14 with 2

we are distributing 14 inside the parenthesis so its distributive property.

Answer:

B

Step-by-step explanation:

Answer:

[tex]\$10,665.64[/tex]  

Step-by-step explanation:

we know that

The  formula to calculate the depreciated value  is equal to  

[tex]V=P(1-r)^{x}[/tex]  

where  

V is the depreciated value  

P is the original value  

r is the rate of depreciation  in decimal  

x  is Number of Time Periods  

in this problem we have  

[tex]P=\$19,900\\r=7.5\%=0.075\\x=8\ years[/tex]

substitute the values in the formula

[tex]V=\$19,900(1-0.075)^{8}=\$10,665.64[/tex]  

Answer: The answer is 10665.64

Step-by-step explanation:

Exponential Functions:

y=ab^x

A= starting value = 19900

r=rate = 7.5%=0.075

Exponential Decay:

b=1-r=1-0.075=0.925  

Write Exponential Function:

y=19900(0.925)^x

Plug in time for x:

y=19900(0.925)^8

y= 10665.6404317  

Evaluate

y≈10665.64

Answer:

2:15

Step-by-step explanation: First you - 15 by 3:15 which = 3:00 then - 45 by 3:00 or 60 - 45 = 15. so therefore 2:15 is the answer. Have a good day, hope I helped

Answer:

43.96 ft, or about 44 ft

Step-by-step explanation:

C = 2πr.  Here, π is approx. 3.14 and r is 7 ft.  Thus, the circumference of the yard is

C = 2(3.14)(7 ft) = 43.96 ft

Answer:

it is A

Step-by-step explanation:

let's notice something on this hyperbola, the fraction that is positive, is the fraction with the "y" variable, that simply means that the hyperbola is opening vertically, namely runs over the y-axis or it has a vertical traverse axis, which means, that, the foci will be a certain "c" distance from the center over the y-axis, well, with that mouthful, let's proceed.

[tex]\bf \textit{hyperbolas, vertical traverse axis } \\\\ \cfrac{(y- k)^2}{ a^2}-\cfrac{(x- h)^2}{ b^2}=1 \qquad \begin{cases} center\ ( h, k)\\ vertices\ ( h, k\pm a)\\ c=\textit{distance from}\\ \qquad \textit{center to foci}\\ \qquad \sqrt{ a ^2 + b ^2}\\ asymptotes\quad y= k\pm \cfrac{a}{b}(x- h) \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}[/tex]

[tex]\cfrac{(y-3)^2}{1}-\cfrac{(x+2)^2}{4}=1\implies \cfrac{[y-3]^2}{1^2}-\cfrac{[x-(-2)]^2}{2^2}=1~~ \begin{cases} h=-2\\ k=3\\ a=1\\ b=2 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ c=\sqrt{a^2+b^2}\implies c=\sqrt{1+4}\implies c=\sqrt{5} \\\\\\ \stackrel{\textit{so then the foci are at}}{(-2~~,~~3\pm \sqrt{5})}\qquad \qquad \qquad \stackrel{\textit{and its vertices are at }}{(-2~~,~~3\pm 1)}\implies \begin{cases} (-2,4)\\ (-2,2) \end{cases}[/tex]

now let's check for the asymptotes.

[tex]\bf y=3\pm \cfrac{1}{2}[x-(-2)]\implies y=3\pm \cfrac{1}{2}(x+2) \\\\[-0.35em] ~\dotfill\\\\ y=3+ \cfrac{1}{2}(x+2)\implies y=3+\cfrac{x+2}{2}\implies y=\cfrac{6+x+2}{2} \\\\\\ y=\cfrac{x+8}{2}\implies y=\cfrac{1}{2}x+4 \\\\[-0.35em] ~\dotfill\\\\ y=3- \cfrac{1}{2}(x+2)\implies y=3-\cfrac{(x+2)}{2}\implies y=\cfrac{6-(x+2)}{2} \\\\\\ y=\cfrac{6-x-2}{2}\implies y=\cfrac{-x+4}{2}\implies y=-\cfrac{1}{2}x+2[/tex]

Answer: b) rolled three times, number of 2s rolled

              d) rolled twice, number of odds rolled

Step-by-step explanation:

A binomial experiment must meet the following criteria:

a) rolled twice --> satisfies #1 & #2 (n = 2)

   X is the sum --> fails #3 (more than two outcomes)

b) rolled three times --> satisfies #1 & #2 (n = 3)

   X is the number of 2s rolled --> satisfies #3 & #4 (P success = 1/6)

c) rolled an unknown number of times - fails #1

d) rolled twice --> satisfies #1 & #2 (n = 2)

   X is the number of odds rolled --> satisfies #3 & #4 (P success = 1/2)

Answer:

Step-by-step explanation:

First, i would add 15 until you get to 60, or divide.

15 / 60 = 4

Then multiply 30 by 4:  30 X 4 =120.

120 is the awnser.

the answer is the second one

Answer:

The answer is b!!

Answer:

54.5 amps to the nearest tenth.

Step-by-step explanation:

V = IR  where V = volts, I = current and R = resistance.

12 = I * 0.22

I = 12/0.22

I = 54.5 Amps.

When the key is turned and the engine starts, the battery will supply approximately 54.55 amps to the engine.

The question regarding how many amps will be drawn from the 12-volt battery when a car engine with a resistance of 0.22 ohms is started can be solved using Ohm's Law. Ohm's Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. The formula is given by I = V / R.

Therefore, the current drawn from the battery can be calculated as follows:

So, when the key is turned and the engine starts, the battery will supply approximately 54.55 amps to the engine.

Choice D, because you would have to divide 3 1/2 by 2 to find the answer

the rest are either subtraction or multiplication

Answer:

Option D  is best modeled with a division expression

Step-by-step explanation:

A)  How much does it cost to buy 3 and 1/2 pounds of apples at $2 per pound?

Cost of 1 pound = $2

Cost of 3 and 1/2 pounds  = [tex]2 \times 3.5[/tex]

B) B. How many apples are needed for 2 pies if the recipe uses 3 and 1/2 apples per pie?

1 pie requires 3.5 apples

So, 2 pies requires apples = [tex]3.5 \times 2[/tex]

C)  How many more apples are needed if a recipe uses 3 and 1/2 apples and you only have 2 apples?

Recipe requires 3.5 apples

You have 2 apples

More apples required = 3.5 - 2

D) . How many apples are in each pie if a total of 3 and 1/2 apples were used to bake 2 pies?

Apples required in 2 pies = 3.5

Apples required in 1 pie = [tex]\frac{3.5}{2}[/tex]

Hence Option D  is best modeled with a division expression

Answer:

20

Step-by-step explanation:

area of a rectangle is determined by length times width so 5 units lies between -7 and -2; and 4 units lie between -5 and -1

The area of the rectangle with given vertices is calculated as the product of the lengths of two adjacent sides, resulting in 20 square units.

To find the area of the rectangle with vertices at A(-7,-5), B(-2,-5), C(-2,-1), and D(-7,-1), you can calculate the lengths of adjacent sides and multiply them together. The length of side AB is the difference in the x-coordinates of A and B, which is |-2 - (-7)| = 5. Similarly, the length of side AD is the difference in the y-coordinates of A and D, which is |-1 - (-5)| = 4.

Therefore, the area of the rectangle is 5 units times 4 units, which equals 20 square units.

Answer:

1 9

2 11

3 13

4 15.

Step-by-step explanation:

When x = 1 y = 2(1) + 7 = 9.

x = 2, y = 2(2)+7 = 11

x = 3, y = 2(3) + 7 = 13

x = 4, y = 2(4) + 7 = 15.

Answer:

B, E, F

Step-by-step explanation:

Equivalent expressions are expressions which are equal. To show expressions are equal, reduce to lowest terms by simplifying using exponent rules.

A. 8^2*8^x  = 8^2+x

B. (8*8)^x  = 64^x

C. 8*8^2x  = 8^(2x +1)

D. 8*8^x  = 8 ^ (x+1)

E. 8^2x  = 64^x

F. 8^x*8^x = 8^(x+x) = 8^(2x) = 64^x

Answer:

8^2x 8^x (8•8)^x

Step-by-step explanation:

Final answer:

The number of different subcommittees possible from a board of 10 members when forming a subcommittee of 3 members is 120, calculated using the combination formula C(10, 3).

Explanation:

To calculate the number of different subcommittees possible from a board of directors consisting of 10 members when forming a subcommittee of 3 members, we must use the concept of combinations because the order of selection does not matter. This is a problem of counting without regard to the order and is solved by using the combination formula:

C(n, k) = n! / (k! * (n-k)!) where 'n' is the total number of items to choose from, 'k' is the number of items to choose, 'n!' represents the factorial of n, and 'k!' is the factorial of k.

Here, 'n' is 10 (the total number of board members) and 'k' is 3 (the number of members to be chosen for the subcommittee). Thus, the formula for our calculation is:

C(10, 3) = 10! / (3! * (10-3)!) = (10 * 9 * 8) / (3 * 2 * 1) = 120

Therefore, there are 120 different subcommittees possible when selecting 3 members from a board of 10.

Final answer:

To find the number of different subcommittees possible from 10 members when selecting 3, the combination formula C(n, k) = n! / (k! * (n - k)!)is used, which results in 120 different subcommittees.

Explanation:

The student's question pertains to combinatorics, which is a field of mathematics concerned with counting, both as a means and an end in obtaining results, and certain properties of finite structures. Specifically, the student is asking about the number of ways to form a subcommittee of 3 members from a larger committee of 10 members. To solve this, one would use the combination formula, which is used for selecting items from a group without regard to the order in which they are selected.

The combination formula is given by:

C(n, k) = n! / (k! * (n - k)!)

Where:

n is the total number of items to choose from (in this case, 10 board members),

k is the number of items to choose (in this case, a subcommittee of 3 members),

n! (n factorial) is the product of all positive integers up to n,

k! (k factorial) is the product of all positive integers up to k,

(n - k)! is the factorial of the difference between n and k.

Applying the formula to the student's scenario:

C(10, 3) = 10! / (3! * (10 - 3)!) = (10 * 9 * 8) / (3 * 2 * 1) = 120

So, there are 120 different subcommittees possible when choosing 3 members from a board of 10 members.

Answer:

30 times

Step-by-step explanation:

subtract 250 from 400, then divide the number (150) by 5 to get your answer 30.

The area of a circle with a diameter of 15 inches is 176.63 square inches and the circumference is 47.1 inches, using the formulas A = (pi)r² and C = (pi)d with (pi) approximated as 3.14.

The area and circumference of a circle can be calculated using the formulas A = (pi) r² for the area, and C = (pi) d for the circumference, where r is the radius, d is the diameter, and (pi) is approximately 3.14.

Given the diameter d = 15 inches, we first find the radius by dividing the diameter by 2, which gives us r = 7.5 inches. We then use the area formula to calculate:

Area = (pi) r² = 3.14 ×(7.5 inches)²

Area = 3.14 ×56.25 square inches

Area = 176.625 square inches

After rounding to the nearest hundredth, we get:

Area = 176.63 square inches

For the circumference, we use the formula:

Circumference = (pi) d = 3.14 ×15 inches

Circumference = 47.1 inches

Answer:

30

Step-by-step explanation:

At the northside store there are 12 females with college degrees

At the southside store there are 18 females with college degrees

The total number of females at the two stores with college degrees is

12+18 = 30

Answer:

  c.  5, 8, 17, 44

Step-by-step explanation:

Put the given number into the formula and do the arithmetic:

  3·4 -7 = 5 . . . . . matches answer choice C only

___

You know the correct answer at this point. You can check the other numbers if you wish:

  3·5 -7 = 8

  3·8 -7 = 17

  3·17 -7 = 44

The compounding tuition fee function's complete expression is,b(x)=33741(1.028)ˣ.

If n is the number of times the interest is compounded each year and r is the yearly rate of compound interest, the final amount after 't' years is:

[tex]a = p(1 + \dfrac{r}{n})^{nt}[/tex]

The function b(x) is expressed as follows:

[tex]\rm b(x) = 33741(1+\frac{0.028}{1} )^x\\\\[/tex]

Where ;

Rate(r)=2.8 percent

Total after x years(b)

Initial amount ( P)= 33741

x represents the number of years since 2015.

Hence, the compounding tuition fee function's complete expression is,b(x)=33741(1.028)ˣ.

To learn more about compound interest;

https://brainly.com/question/1329401

#SPJ2

Answer: 64 daisies

Step-by-step explanation:

8 x 4 = 32                                                                                                                            8 x 8 = 64 daisies

Answer:

A

Step-by-step explanation:

We can use a simple formula to solve for SST. The formula is:

[tex]SST=\frac{SSE}{1-R^2}[/tex]

Where

the coefficient of determination is  [tex]R^2[/tex]

Now, we are given  [tex]R^2[/tex]  is 0.25 and SSE is 12 (not SEA, it's SSE). we simply put it into the formula and solve for SST:

[tex]\\SST=\frac{12}{1-0.25}\\SST =16[/tex]

correct answer choice is A

Answer:

The answer is B

Step-by-step explanation:

Final answer:

To calculate h(-3) for the function h(x) = x² - 2x - 5, we plug in -3 for x and simplify to get a result of 10.

Explanation:

To find h(-3) when given h(x) = x² - 2x - 5, we need to substitute x with -3 into the function and simplify:

h(-3) = (-3)² - 2(-3) - 5

= 9 + 6 - 5

= 15 - 5

= 10.

Therefore, h(-3) equals 10.

ANSWER

[tex]W(\frac{9}{7},\frac{51}{7} )[/tex]

EXPLANATION

We want to find the coordinates of the point W(x,y) which divides V(-3,3) and X(9,13) in the ratio m:n=3:4.

The x-coordinate of this point is given by:

[tex]x= \frac{mx_2+nx_1}{m + n} [/tex]

[tex]x= \frac{3(9)+4( - 3)}{4 + 3} [/tex]

[tex]x= \frac{21 - 12}{4 + 3} [/tex]

[tex]x= \frac{9}{7} [/tex]

The y-coordinates is given by;

[tex]y= \frac{my_2+ny_1}{m + n} [/tex]

[tex]y= \frac{3(13)+4( 3)}{4 + 3}[/tex]

[tex]y= \frac{39+12}{4 + 3}[/tex]

[tex]y= \frac{51}{7}[/tex]

Hence

[tex]W(\frac{9}{7},\frac{51}{7} )[/tex]

let's recall that in an isosceles triangle, the twin sides make twin angles at the bottom/base, so on the triangle on the left-side, if the "vertex" atop has an angle of 116°, then the twin sides below are simply 180° - 116 = 64, split that in half and that's 32° each.

The same is true for the isosceles triangle on the right side.  Also recall that a flat-line is always 180°, 32 + 72 + 76 = 180.

Check the picture below.

Answer:

0.56

Step-by-step explanation:

125 in total.

Let x be the number of those who passed both tests.

Thus,

x+(85-x)+(95-x)+15=125,

195-x=125,

x=70.

Thus, the probability that they passed both tests is

[tex]Pr=\dfrac{70}{125}=\dfrac{14}{25}=0.56.[/tex]

Answer:

41.8%

Step-by-step explanation:

From the table, the total number of female patients is given as 335. On the other hand, the total number of female patients with type-O blood is given as 140. The probability that a randomly selected female patient will have type-O blood can be calculated as;

the total number of female patients with type-O blood/the total number of female patients

140/335 = 0.4179

As a percentage this becomes;

0.4179 * 100 = 41.8%

Therefore, the percentage of female patients with type-O blood is 41.8%

Answer:

$14.00

Step-by-step explanation:

30% less than 100% of the regular price is 70% of the regular price.

Erica paid ...

0.70 · $20.00 = $14.00