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2 years ago

Help! ? x 4=2 8 x ?=4 2 x ?=4

Mathematics

2 answers:

Alona [7]2 years ago

8 0

Answer:

2 x 2=4

8 x 0.5= 4

0.5 x 4=2

Rzqust [24]2 years ago

6 0

Answer:

The answer to your question is:

a) 1/2

b) 1/2

c) 2

Step-by-step explanation:

? x 4 = 2

1/2 x 4 = 2

4/2 = 2

2 = 2

8 x ? = 4

8 x 1/2 = 4

8 / 2 = 4

4 = 4

2 x ? = 4

2 x 2 = 4

4 = 4

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Pls answer :c ! I need help ASAP ! (Math)

kaheart [24]

Answer:

6x = 12 : Divide both sides of the equation 6

6 ( x - 12 ) = -3x - 5: Distrubite the 6 to clear the paranthesis

6x + 5 = 9x - 1 : Subtract 6 from both sides of the equation

5 0

2 years ago

Suppose that the world's current oil reserves is R = 1820 billion barrels. If, on average, the total reserves

iVinArrow [24]

Answer:

A. R = -18t + 1,820

B. 1,568 billions of barrels

C. approximately 101.11 years

Step-by-step explanation:

To make our equation, we'll use the form R = mt + b. M represents how many billion barrels of oil are being lost each year, which we know is 18 billion. So -18 will be our m. B is how many total barrels of oil there are, which is 1,820. So 1,820 will be our b. Now the equation looks like this:

R = -18t + 1,820

We can use this equation to answer Part B.

Replace the t with 14:

R = -18(14) + 1,820

Now solve for R:

R = -18(14) + 1,820

R = -252 + 1,820

R = 1,568

14 years from now, there will be 1,568 billions of barrels left.

To solve part C, we need to find how many years it will take for all of the oil to be used up. After it's all used up, the total amount of oil will be 0, so we can replace R with 0 and then solve for t:

0 = -18t + 1,820

Subtract 1,820 from both sides to isolate -18t:

0 - 1,820 = -18t + 1,820 - 1,820

-1,820 = -18t

Divide both sides by -18 to isolate the t:

-1,820/-18 = -18t/-18

101.11 = t

After approximately 101.11 years, all of the oil will be used up.

3 0

1 year ago

A, b, c, and d please

DIA [1.3K]

<h2>Answers / Step-by-step explanation:</h2><h3>a. What is the length of one side of the square.</h3>

Looking at the image, the radius (r) of the circle appears to cover half of the length of a side of the square. Hence, the side of the square has a length of 2r.

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<h3>b. The formula A= πr² is used to find the area of a circle. The formula A=4r² can be used to find the area of the square. Write the ratio of the area of the circle to the area of the square in the simplest form.</h3>

$Ratio=\frac{\pi r^{2} }{4r^2} =\frac{\pi}{4}$ .

Notice that the value "r²" disappears from the expression because is being multiplied and divided by it at the same time.

$Ratio=\frac{4\pi }{16} =0.7854.$

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c. Complete the table.

To complete each cell of the table, simply take the equation of the asked parameter and substitute the value of r by the number indicated in the title of the column. For example, column 3 should be filled out like this:

Area of Circle (units²): π(3)²or 9π.

Length of 1 Side of the Square: 2r= 2(3)= 6.

Area of Square (units²)= 4r²= 4(3)²= 36.

Ratio: $\frac{\pi}{4}$ .

Do the same for all the other columns.

The answers to the table are presented on the attached image.

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d. What can you conclude about the relationship between the area of the circle and the square?

They will always have the same value, π/4, regardless of the size of the square and circle. As long as the circle borders meet the square's at the middle of each side of the square, the relationship will be the same.

4 0

1 year ago

Someone pls help me with this

Burka [1]

the picture is blurry

6 0

2 years ago

Given g(x) is a linear function and passes through the points (3,2) and (5,-1),

Slav-nsk [51]

Answer:

-3/2

Step-by-step explanation:

here it goes. (-1)- (2) / (5)-(3)

7 0

2 years ago