Solve the simultaneous equations
X + y = 8
3x - y = 12
X =
y =​

Answer:The answer would be x^4 -16

Explanation: use the FOIL method.

(x^2 +4)(x^2 -4)= x^4 +4x -4x -16. 4x and -4x cancel each other out. You are left with x^4 -16.

F- irst

O- uter

I- nner

L- ast

Step-by-step explanation:Hope this helps

Answer:

1 x 4 x 12 = 48

Step-by-step explanation:

48 subs

The number of subscribers at 12 weeks is required.

Number of subscribers at 12 weeks would be 1048576.

a = Initial subscriber count at 2 weeks = 1

Week at which number of subscribers is required is 12.

x = Duration between the weeks = [tex]12-2=10[/tex]

r = Rate of increase = 4

The required formula is

[tex]f(x)=ar^x\\\Rightarrow f(10)=1(4)^{10}\\\Rightarrow f(10)=1048576[/tex]

Number of subscribers at 12 weeks would be 1048576.

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https://brainly.com/question/16954106?referrer=searchResults

Answer:

Hey there the answer is 370

Step-by-step explanation:

Answer:

7788 observations are expected to be below a value of 242.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 188, standard deviation = 18

The normal distribution is symmetric, which means that 50% of the measures are below the mean and 50% are above.

Percentage of observations below 242:

242 = 188 + 3*18

So 242 is three standard deviations above the mean

Of the measures below the mean, all are below 242.

Of the measures above the mean, 99.7% are between the mean of 188 and three standard deviations above the mean(242). So the percentage is:

[tex}P = 0.5 + 0.997*0.5 = 0.9985[/tex]

Number of observations below 242:

99.85% of 7800 observations

0.9985*7800 = 7788

7788 observations are expected to be below a value of 242.

Answer:

Step-by-step explanation:

im so unfused what subject if yall ask a question putt the subject

Answer:is there a pic

Step-by-step explanation:

More info?

Answer:

If m = 17 then the equation would be 12 = 4 which is not true

So this whole equation is false

Step-by-step explanation:

Answer:

-49 degrees Fahrenheit sorrry don’t have time gtg

Step-by-step explanation:

Answer:

option (c)

Step-by-step explanation:

4*6*5

please mark as brainliest

Answer:

(-2, -4), (-1, -1), (0, 0), (1, -1), (2, -4)

Step-by-step explanation:

You plug in x values to get the y values are dot-in the points!

y = -x^2

You plug in -2 and get -(2)^2 = -(4) = -4

Same thing with all other values.

Answer:

hey mate here's your answer

Step-by-step explanation:

(hypothenuse)²=(base)²+(perpendicular)²

15²=6²+P²

322=36+p²

322-36=p²

286=p²

√286=p

16.91=p

hope it helps you

plz mark me as brainiest

Answer:

[tex]|A| = - 28[/tex]

Step-by-step explanation:

Given

[tex]A = \left[\begin{array}{cc}-2&6\\3&5\end{array}\right][/tex]

Required

Determine the determinant

For a two by two matrix, A such that:

[tex]A = \left[\begin{array}{cc}a&b\\c&d\end{array}\right][/tex]

The determinant |A| is:

[tex]|A| = a * d - b * c[/tex]

So, in

[tex]A = \left[\begin{array}{cc}-2&6\\3&5\end{array}\right][/tex]

The determinant is:

[tex]|A| = -2 * 5 - 6 * 3[/tex]

[tex]|A| = -10 - 18[/tex]

[tex]|A| = - 28[/tex]

Answer:

80 degrees is what I got im not 100 percent its right

Answer:

attached below

Step-by-step explanation:

Assuming that Y1 and Y2 are independent exponential random variable with mean 3

where : U = Y1 + Y2 applying the property of exponential distribution sum of exponentials will follow a gamma distribution

i.e. ∝ = 2 , and β = 1

note : U = 2X

Hence probability distribution function X =

Fx (x) = p( X ≤ x )

= p( U ≤ 2x )

= Fu (2x)

probability density function  X

f (x) = [tex]\frac{dF(2x)}{dx}[/tex]  = 2 Fu (2x)

attached below is the remaining part of the solution

In this exercise we have to use probability knowledge to calculate the density of the function, so we have to:

[tex]f(u) \left \{ {{ue^u: u>0} \atop {0}} \right.[/tex]

[tex]f(x) \left \{ {{4xe^{-2x}: x>0} \atop {0}} \right.[/tex]

Assuming that [tex]Y_1[/tex] and [tex]Y_2[/tex] are independent exponential random variable where:

[tex]U = Y_1 + Y_2[/tex]

Applying the property of exponential distribution sum of exponentials will follow a gamma distribution, we have:

Hence probability distribution function X , will be:

[tex]F_x (x) = p( X \leq x )\\= p( U \leq 2x )\\= F_u (2x)[/tex]

So we can say that:  

[tex]f (x) = \frac{dF}{du} = 2 F_u (2x)[/tex]

See more about probability at brainly.com/question/795909

Answer:

16.

Step-by-step explanation:

We need 8 + a number to equal 24. We need it to equal 24 because 2 + 4 = 6 and 6 x 4 = 24. To find the missing number we need to subtract 8 from 24. 24 - 8 = 16. Let's plug 16 into the equation.

8 + 16 = 4(2 + 4)

24 = 4(2 + 4)

24 = 4(6)

24 = 24

Therefore, 16 is the correct answer.

Answer:

slope = -2

y-intercept = 5

Step-by-step explanation:

[tex]y = mx + b[/tex]

where m = slope and b = y-intercept.

[tex]y = mx + b \\ y = - 2x + 5[/tex]

Consider the coefficients.

[tex]mx + b = - 2x + 5[/tex]

[tex]m = - 2 \\ b = 5[/tex]

Therefore, the slope is -2 and y-intercept is 5.

Answer:

A c must not be finite.

A ∪ B must be infinite.

A ∩ B must not be infinite.

Step-by-step explanation:

Must A c be finite?

Suppose

U = {....-4,-3,-2,-1,0,1,2,3,4.......}

A = {....-4,-2,0,2,4.......} which is infinite set

B = {....-3,-1,0,1,3.......} which is also infinite set

So We need to calculate the A compliment

[tex]A^{c}[/tex] = U - A = {....-4,-3,-2,-1,0,1,2,3,4.......} - {....-4,-2,0,2,4.......} = {....-3,-1,0,1,3.......}

Hence [tex]A^{c}[/tex] is also an infinite set.

The statement "Must A c be finite?" is incorrect.

Must A ∪ B be infinite?

In AUB all the elements of set A and set B are combined into a single set to get the union of A and B. If A and B are the infinite set then their union must also be an infinite set because all the elements of infinite sets will be there so the union of these infinite sets will also be an infinite set.

The Statement "Must A ∪ B be infinite?" is correct.

Must A ∩ B be infinite?

In A∩B the common elements of both sets will be the answer to the intersection of A and B set. If we consider the A and B are the infinite subsets of a Universal set that carry all the elements then there will not be any common element in both sets A and B.

The Answer of A∩B is { } or empty set.

The statement "Must A ∩ B be infinite? " is incorrect.

Answer:

First one is infinitely many solutions. Second one is One solution. The third one is No solution.

Step-by-step explanation:

First line both equations have the same line. second one are two completely different equations while the third one are parallel lines which never intersect.

Answer:

The first one

Step-by-step explanation:

42+57=99

The only answer that is equal to 99 is the first one. 3(14+19) = 3(33) = 99

Answer:

66+33

Step-by-step explanation:

42+57= 99

__________

My expression

66+33= 99

Hopefully that helps you out.

Answer:-

Option A

Step by step explanation :-

Distance between Springfield to Longmeadow is 3.8 km.

Adamsville to Springfield is 7.6 km.

Answer:

1. B. <1 and <2

2. C. 37°

3. B. 40°

Step-by-step explanation:

1. Complementary angles add up to 90°.

From the diagram given, <1 and <2 are complementary because they sum up to 90°.

The answer is B. <1 and <2

2. Given that,

m<1 = 37°, m<4 = 37° also.

This is because m<1 and m<4 are Vertical angles. Vertical angles pair are equal.

The answer is: C. 37°

3. If m<1 = 50°, then:

m<5 = 90 - m<4

m<1 = m<4 = 50° (vertical angles)

m<5 = 90 - 50 (substitution)

m<5 = 40°

Answer is B. 40°

Answer:

x = 4

Step-by-step explanation:

6x + 8 = 32

6x = 32 ‐ 8

6x = 24

x = 24/6

x = 4

Answer: 8x3 to the 6th degree minus 4th5 odd one under.

Step-by-step explanation:

Answer:

Most likely 0.025

Verified with calculator :)

Answer:

Step-by-step explanation:

From the given information:

The mean [tex]\hat x = \dfrac{\sum x}{n}[/tex]

[tex]\hat x = \dfrac{25+36+41+28+29+32+29+37+34+34+37+35+30+36+31+31}{16}[/tex]

[tex]\overline{x} = \dfrac{535}{16}[/tex]

[tex]\overline{x} = 33.44[/tex]

The sample variance is as follows:

[tex]S^2 = \dfrac{\sum dx^2 - ( \dfrac{\sum dx)^2}{n} )}{n-1}[/tex]

[tex]S^2 = \dfrac{279- ( \dfrac{7}{15} )^2}{15}[/tex]

[tex]S^2 = 18.585[/tex]

Answer:

-15

Step-by-step explanation:

=(x - 8)(x + 7)

=x2-15x-56

= (0)2 - 15(0) -15

= -15

Answer:

The possible outcomes are 1728.

Step-by-step explanation:

Consider the provided information.

We know that there are 12 months in a year and we have 3 people in a room.

As the order is important it means for each person we have 12 choices of the months.

The possible outcomes are: [tex]12\times12\times12=1728[/tex]

Hence, the possible outcomes are 1728.

answer:

9y

step-by-step explanation:

add 7 and 2 = 9 then add the y