Can someone help me I don’t get it

Solve for the unknown value X/0.45=0.16/1.2

tekilochka [14]

Step-by-step explanation:

please mark me as brainlest

8 0

2 years ago

Help Please! Help me answer these questions #21, 23, 25

Gala2k [10]

21. There are 4 aces and 4 fours. p = 8/52 = 2/13

23. There are 26 black cards and 6 red picture cards. p = 32/52 = 8/13

25. There are 13 clubs and 15 more cards 5 or less. p = 28/52 = 7/13

6 0

3 years ago

Helpp Ok I don’t know how they got 3y-24

Nesterboy [21]

Answer:

y = -5/3x + 3

Step-by-step explanation:

First lets turn the equation from standard form to slope intercept form.

3x - 5y = 1

~Subtract 3x to both sides

-5y = 1 - 3x

~Divide -5 to everything

y = -1/5 + 3/5x

~Reorder

y = 3/5x - 1/5

Now that we have the equation in slope intercept form, we can find the new equation. A perpendicular line will have the opposite reciprocal of the original slope.

3/5x -> -5/3x

Now that we have the slope, we can use the given point to find the y-intercept.

y = -5/3x + b

8 = -5/3(-3) + b

8 = 5 + b

3 = b

Put all the information we solved for into a final equation.

y = -5/3x + 3

Best of Luck!

7 0

3 years ago

Fine the product mentally. [(x+1) (x-1)^2

Murljashka [212]

If the product is: [(x+1) (x-1)]^2 , the answer is:
[(x+1) (x-1)]^2 = [x^2-1]^2 = x^4-2x^2+1

5 0

3 years ago

Read 2 more answers

I need help please. I don't understand

Viktor [21]

Answer:

a. y = 0.56x -17.78 . . . . y = Celsius temperature; x = Fahrenheit temperature

b. 37.436 °C

c. interpolation

d. 83.2 °F

Step-by-step explanation:

a. In most cases, finding the linear regression equation that fits a table of data involves somewhat tedious calculations best performed by a calculator or computer. The general approach is to enter the data into the necessary list(s) or table, and invoke the necessary function.

In Microsoft Excel (and many other spreadsheet programs), you can chart the data in the usual way, then choose the option to add the regression equation to the chart.

In the Desmos calculator used here, the data can be entered into a table, and a generic equation written relating the table entries. Any unknown constants in the equation are computed by Desmos so as to maximize the correlation between the equation and the data. Using a linear equation results in a linear regression computation.

This calculator tells us what we should already know (from previous knowledge of Fahrenheit–Celsius conversion).

y ≈ 0.56x -17.78

(We already know the actual conversion is y = (5/9)(x -32) = (5/9)x -(17 7/9). The above is what you get when the numbers are rounded to hundredths, as required by this problem.)

___

b. Using the above equation for x=98.6, we get

y = 0.56·98.6 -17.78 = 55.216 -17.78 = 37.436 . . . °C

___

c. Since we're finding a value between values already in the table, the process is called interpolation. (Extrapolation is used to find values beyond those that are already in the table. The prefixes inter- (between) and extra- (beyond) can help you remember what these terms mean.)

___

d. In this part, we're asked to find x that corresponds to y=28.8. We fill in the value and solve.

28.8 = 0.56x -17.78

46.58 = 0.56x . . . . . . add 17.78

46.58/0.56 = x ≈ 83.179 ≈ 83.2 . . . . . divide by the coefficient of x; round appropriately. Units are °F.

6 0

4 years ago