Solve
1/2
x + 3 <4x - 7

Answer:

A

Step-by-step explanation:

Mother Russia is the mother land

Answer: 56 45 46

Step-by-step explanation: learned about it in math class

Answer:

The smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income is 48.

Step-by-step explanation:

The complete question is:

The mean salary of people living in a certain city is $37,500 with a standard deviation of $2,103. A sample of n people will be selected at random from those living in the city. Find the smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income. Round your answer up to the next largest whole number.

Solution:

The (1 - α)% confidence interval for population mean is:

[tex]CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}[/tex]

The margin of error for this interval is:

[tex]MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}[/tex]

The critical value of z for 90% confidence level is:

z = 1.645

Compute the required sample size as follows:

[tex]MOE=z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}[/tex]

      [tex]n=[\frac{z_{\alpha/2}\cdot\sigma}{MOE}]^{2}\\\\=[\frac{1.645\times 2103}{500}]^{2}\\\\=47.8707620769\\\\\approx 48[/tex]

Thus, the smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income is 48.

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

Step-by-step explanation:

1) y intercept is 0

2) y intercept is 1

3) y intercept is -4

4) y intercept is 4

5) y intercept is 5

6) y intercept is 0

7) y intercept is 5

8) y intercept is 4

Answer:

Same things with the slopes.

Step-by-step explanation:

y= mx+b

Answer:

do you have a screenshot of the angle or something? is it a triangle or another shape? anyhwhooo I believe your answer should be 56°

Step-by-step explanation:

48° + 76° = 124°

180° - 124° = 56°

so your answer is 56°

Answer:

The required probability =  0.5385

Step-by-step explanation:

The no. of cards in a deck = 52

The event of having  3 in a draw of a single card = 4/52

The event of having a black card in a draw of a single card = 26/52

The event of having  a black card and 3s = 2/52

Let T represent the event of having  3.

U to represent the event of having  a black card; &

V to represent the event of having  a black card that is 3s

Then the probability that it will be a 3 or a black card is;

P( T or U) = p(T) + p(U) - p(T and U)

P( T or U) = 4/52 + 26/52 - 2/52

P( T or U) = (4+26-2)/52

P( T or U) = 28/52

P( T or U)= 7/13

P( T or U) = 0.5385

Answer:

3m^4

Step-by-step explanation:

x^y

x is the base and y is the exponent

Answer:

5 - x^2

Step-by-step explanation:

5 - x^2 the translation

Answer:

yes though i am not completely sure

Step-by-step explanation:

Answer:

[tex]\boxed {\boxed {\sf 6,000 \ Newtons}}[/tex]

Step-by-step explanation:

Force can be found by multiplying the mass by the acceleration.

[tex]F= m*a[/tex]

The mass of the car is 3,000 kilograms and the acceleration is 2 meters per second squared.

[tex]m=3,000 \ kg \\a= 2 \ m/s^2[/tex]

Substitute the values into the formula.

[tex]F= 3,000 \ kg * 2 \ m/s^2[/tex]

Multiply.

[tex]F=6,000 \ kg*m/s^2[/tex]

1 kg*m/s² is equal to 1 Newton (N). Therefore, our answer of 6,000 kg*m/s² is equal to 6,000 Newtons.

[tex]F= 6,000 \ N[/tex]

The force required is 6,000 Newtons

Mass = 3,000 kg

Acceleration = 2 m/s^2

The net force.

Force = Mass × Acceleration

Force = 3,000 kg × 2 m/s^2

Force = 6,000 kg × m/s^2

We know that kg × m/s^2 = Newton.

Hence, the net force required is 6,000 N.

6,000 N is the correct answer.

Answer: 3024 ways

Step-by-step explanation: 9*8*7*6*5=3024

Answer:

16X^2 - 8x

Step-by-step explanation:

A = L x W

L = x + 5 + 3x + 4x - 9 = 8x - 4

W = 2x

(8x - 4) (2x) = 16x^2 - 8x

Answer:

[tex] \sqrt[5]{ \frac{1}{32} } \\ = \sqrt[5]{( \frac{1}{2} ) {}^{5} } \\ = \frac{1}{2} [/tex]

thank you ☺️

Answer:

3°F

Step-by-step explanation:

36 divided by 12 is 3

Answer:

3 degrees F

Step-by-step explanation:

36/12 = 3

Answer:

132°

Step-by-step explanation:

Since there are parallel lines, this will help figure out what the value of x is.

A straight line equals 180°

We know that one side is 48°

Subtract

180 - 48 = 132

Answer:

6.7

Step-by-step explanation:

This is trigonometry. We will have to find the opposite leg and the hypotenuse is given to us as 10. So we will have to use sin.

Soh in Soh cah toa

                  So  sin(42)=x/10

                        10 times sin(42)=x

                             Evaluate using a calculator=6.69130606 and so on

                                 Rounded to the nearest tenth is 6.7

So the answer is 6.7

Answer:

x=25

I'm sorry if I'm wrong

Answer:

Analytical methods are the preferred way to determine the outcome of a hypothesis when associated equations are simple and a precise answer is desired.

The algebraic method is more precise. When you "solve" a system you are really identifying the points that all of the lines have in common. In other words, the point at which the lines intersect. Finding the solution with graphs is not precise, but should usually be close enough if that is what is asked.

Answer:

.79/4= .197. Or 20 cents each

The cost per unit of lemon in Option A is same as given per unit cost of lemon in grocery store that is $0.1975

Cost of per unit  is cost of one unit. Cost per unit can be calculated simply by dividing the total cost of all items by the quantity of given item.

Given Cost of 4 lemons  in a grocery store = $ 0.79

Cost of 1 lemon in the grocery store = total cost / 4  = $ 0.79÷ 4 = $0.1975

To check pricing option for same pricing check per unit price of each option.

A.  Given twelve lemons for $2.37

    Given Cost of 12 lemons = $ 2.37

    Cost of 1 lemon = total cost / 12  = $ 2.37 ÷ 12  = $0.1975

B. Given three lemons for $0.65

    Given Cost of 3 lemons = $ 0.65

    Cost of 1 lemon = total cost / 3  = $ 0.65 ÷ 3 = $0.2167

C. Given six lemons for $1.20

    Given Cost of 6 lemons = $1.20

  Cost of 1 lemon = total cost / 6  = $ 1.20 ÷ 6 = $0.2

D. Given  two lemons for $0.35

    Given Cost of 2 lemons = $0.35

  Cost of 1 lemon = total cost / 2  = $ 0.35 ÷ 2 = $0.175

Therefore , option A has same per unit cost $0.1975  as given pricing of the grocery store.

Also, learn more about cost price from the link below:

https://brainly.com/question/11027396

#SPJ2

Answer: 1,000 cubic inches

explanation: in a cube, all sides are equal so if one side=10, the rest are the same. now to find volume u do length x width x height. (aka 10x10x10)

Answer:

It should be the second one

Step-by-step explanation:

Because in cubic inches it is 1,000.

Answer:

Domain of inverse: [tex]x \le -1[/tex]

Range of inverse: [tex]y \ge 0[/tex]

Explanation:

The domain and range swap. This is because the inputs (x) and outputs (y) swap roles when going from the original function to the inverse, and vice versa.

Answer:

=2

Step-by-step explanation:

-x/x + 3

  -1 +3 +2

Answer:

Todas estan bien

Step-by-step explanation:

Answer:

20 cm.

Step-by-step explanation:

Pythagorean Theorem a^2 + b^2 = c^2 (c is the hypotenuse).

Plug it in.

48^2 + b^2 = 52^2

2,304 + b^2 = 2,704

Isolate the variable.

b^2 = 400

b = 20