can someone help. i don’t know the answer.

Answer:

A) both expression involve addition

Explanation:

There are 6 names in either circle A only, circle B only, or both circles (overlapped region)

The probability of getting someone in one of those circles, or both, is 6/9 = 2/3.

Step-by-step explanation:

i think its 24

sorry, if its wrong

42 is an integer, for me i can assume you asking about the additive opposite.

so, the answer is -42

Answer:

cos.1.1k

Step-by-step explanation:

Answer:

\sigma_{k = 0}^6 (4+9k)

Step-by-step explanation:

notice that the sequence is

a(k)=4+9k

for k=0,1,...,6

Answer:

.0589582125/*6.059852 cuhhhhh

Step-by-step explanation:

Answer:

x = 23 and y = 45

Step-by-step explanation:

x + y = 68

y = x + 22

substitute into your equation for x + y = 68

x + (x+22) = 68

combine like terms

2x + 22 = 68

2x = 46

x = 23

Now, use this to solve for y = x + 22

y = 23 + 22

y = 45

Answer:

0.74

Step-by-step explanation:

The middle age citizens are those in the age group of 18-55.

We solve this question using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

Mean 46 years

Standard deviation 13 years

For x = 18 years

z = 18 - 46/13

z = -2.15385

Probability value from Z-Table:

P(x = 18) = 0.015626

For x = 55 years

z = 55 - 46/13

= 0.69231

Probability value from Z-Table:

P(x = 55) = 0.75563

The probability that he/she is middle age is

P(x = 55) - P( x = 18)

= 0.75563 - 0.015626

= 0.740004

Approximately = 0.74

Answer:

A

Step-by-step explanation:

Answer:

x=8

Step-by-step explanation:

1. 91+12x-7=180                                    2. 68=7x+12

84+12x=180                                               56=7x

12x=96                                                       8=x

x=8

Consecutive angles                                    Alternate Interior Angles

Answer: Multiply 5 x 30 and you get 150 miles

Step-by-step explanation:

Answer:

The second option or B

Step-by-step explanation:

The approximate total mass= number of atoms * weight of an atom.

The approximate total mass=3.06 10²³ atoms. (1.67 10⁻²⁴ grams/1 atom)=

=0.51102 g ≈ 0.51 g

Answer: the approximate total mass is 0.51 grams.

Answer:

[tex]f(x)=\sqrt{\frac{1}{4x^2-3}}[/tex] for [tex](-\infty, -\sqrt {\frac 3 4 })[/tex] and [tex](\infty, \sqrt {\frac 3 4 })[/tex] .

Step-by-step explanation:

The given differential equation is [tex]\frac{dy}{dx}=-4xy^3[/tex]

Rearranging it as

[tex]y^{-3}dy=-4xdx \\\\\frac{y^{-3+1}}{-3+1}=-4\frac{x^2}{2}+C \\\\\frac{y^{-2}}{2}=4\frac{x^2}{2}+C \\\\y^{-2}=4x^2+C\cdots(i)[/tex]

where C is constant.

The initial condition is f(-1)=-1, i.e for x=-1, y=-1.

So, by using the initial condition to get the value of constant:

[tex](-1)^{-2}=4(-1)^2+C \\\\1=4+C \\\\C=1-4=-3[/tex]

From equation (i), we have

[tex]y^{-2}=4x^2+(-3) \\\\y^2=\frac{1}{4x^2-3} \\\\y=\sqrt{\frac{1}{4x^2-3}} \\\\[/tex]

As y=f(x), so the required particular solution

[tex]f(x)=\sqrt{\frac{1}{4x^2-3}}[/tex]

Now, determining the domain of the function

As for a real value output, the term under square root must be positive.

So,

[tex]\frac{1}{4x^2-3} >0 \\\\\Rightarrow 4x^2-3 >0 \\\\\Rightarrow x^2 > \frac 3 4 \\\\\Rightarrow |x|>\sqrt {\frac 3 4 } \\\\\Rightarrow x> \sqrt {\frac 3 4 } \; and \; x< -\sqrt {\frac 3 4 }[/tex]

Therefore, the domain of the function is

[tex](-\infty, -\sqrt {\frac 3 4 }) \;and\; (\infty, \sqrt {\frac 3 4 })[/tex]

Hence, [tex]f(x)=\sqrt{\frac{1}{4x^2-3}}[/tex] for [tex](-\infty, -\sqrt {\frac 3 4 })[/tex] and [tex](\infty, \sqrt {\frac 3 4 })[/tex] .

Answer: It is B

Step-by-step explanation:

Just took the test

Answer:

Step-by-step explanation:

5i ⋅i⋅(−2i)= −

10 ⋅ i2 ⋅ i= − 10 ⋅ (−1) ⋅ i = 10i

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

You solve a linear equation by putting the variable on one side of the equal sign and a constant on the other side. Here, variables and constants are on both sides of the equal sign, so you need to separate them.

The basic idea is that you add the opposite of any term you don't want. Whenever you perform any operation (like "add"), you must do it to both sides of the equation.

We observe that x-terms have coefficients of 10 and 9. We choose to add the opposite of 9x to both sides:

  10 -9x -5 = 9x -9x +2

  x -5 = 2 . . . . simplify

Now, we still have -5 on the left, where we don't want it. So, we add its opposite (+5) to both sides:

  x -5 +5 = 2 +5

  x = 7 . . . . simplify

The solution is x = 7.

_____

Additional comment

If we were to end up with an x-coefficient other than 1, we would divide both sides of the equation by that coefficient. This will leave the x-term with a coefficient of 1.

Answer:it’s D

Step-by-step explanation:

Answer:

Net Worth

Step-by-step explanation:

Answer:

2 and 09 but if it's just one option, pick 2

Step-by-step explanation:

the others aren't rational i think

Answer: the decreases is 4% over 2% and the increase is thx for the points

Step-by-step explanation:

Answer:

13/24 more

Step-by-step explanation:

Dina = 5/6

Natasha = 11/8

Find the LCF

6| 6, 12, 18, 24

8| 8, 16, 24

Get each fraction to have a denominator of 24

5/6 = 20/24

11/8 = 33/24

Subtract 20/24 from 33/24

33/24 - 20/24 = 13/24

Answer:

I belive it would be D

Step-by-step explanation:

Answer:

base salary

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

well you are multiplying -5 and -2. When multiplying two negative numbers you get a positive. 5x2= 10.

Answer:Second Graph

Step-by-step explanation:

Did it on Edge

Answer:

second graph

Step-by-step explanation:

Answer:

Amy

Step-by-step explanation:

amy completed a longer distance in a shorter amount of time

rather than john completed a shorter distance in a longer time