What is 20-200 is it postive or negative?

Answer all and if you do you get Brainlest. 1). The volume of a tank is 60 cubic yards, length is 3 yards, and hight is 4 yards.

densk [106]

Answer:

THe anser is, you will never give brianiest I saw your otherquestions, never gave brainiest to those people who helped you. Guys don't trust his Question. I had another Account and, I saw his other questions.

6 0

3 years ago

Algebra I

Marina86 [1]

Answer:

$A_t=2B^3 \ cm^2$

Step-by-step explanation:

Area Of Squares

The area of a square of side length B centimeters is

$A=B^2 \ cm^2$

If we have two rows, each one containing B of those squares, then the total area is

$A_t=(2B)A=(2B)B^2 \ cm^2$

Simplifying

$\boxed{A_t=2B^3 \ cm^2}$

7 0

4 years ago

A goat enclosure is in the shape of a right triangle. One leg of the enclosure is built against the side of the barn. The other

Sonbull [250]

Answer:

The lengths are

8 + 8[root]3 , 12 + 8[root]3 and 20 + 8[root]3.

Step-by-step explanation:

Let the side against the barn be xft

We were told that the adjacent side is 4ft more than the side against the barn. This means it has a length of (x + 4)ft.

Lastly, we are told that the hypotenuse is 8ft longer than the side along the barn I.e (x + 4 + 8)ft = ( x + 12)ft.

Since the three lengths form a triangle, the square of the hypotenuse equals the square of the adjacent side plus the square of the opposite side. This is the pythagoras' theorem.

Mathematically, this can be written as follows:

(x + 12)^2 = x^2 + (x + 4)^2

This yields x^2 + 24x + 144 = x^2 + x^2 + 8x + 16

x^2 + 24x + 144 = 2x^2 + 8x + 16

Rearranging this will yield:

x^2 - 16x - 128 = 0

Using the quadratic formula yields the following values for x :

8 - 8[root]3 and 8 + 8[root 3]

Since the first is negative, we discard it and the only correct value of x is 8 + 8[root]3

Now the other length is 12 + 8[root]3 and 20 + 8[root]3.

4 0

4 years ago

Read 2 more answers

The volume of the above cylinder is 21m find the radius of the circular end

german

Answer:

0.75m

Step-by-step explanation:

The volume of a prism is:

the area of the cross section × length

In this case the cross section is the circle so the formula is

v = πr²h

volume = 21m³

height or length = 12m

Sub in the values:

21 = πr² × 12

1.75 = πr² (I divided both sides by 12)

0.5570423008 = r² (I divided both sides by π)

r = 0.74635... (I square rooted both sides)

r ≈ 0.75m (to 2 d.p)

4 0

3 years ago

Now, use your image and knowledge of the segment addition postulate to answer the following questions. Use your drawn image and

saveliy_v [14]

Answer:

x=3; HJ=21; JK=12

Step-by-step explanation:

One way of the segment addition postulate is that if you have two connected segments on one line, the length of the combined segment is the length of the two smaller segments added together.

$\text{combined segment}=\text{partial segment}+\text{other partial segment}$

So, the length of HK = the length of HJ + length of JK

In geometry, the length of a line segment is often simply written as the two letters of their endpoints, so the above equation would be more compactly written as: $HK=HJ+JK$

Now, we're given extra information in the problem stating lengths of each of those segments, but some are in terms of some unknown "x" (instead of just a number). Unfortunate, but it's okay.

One last piece of trickery is that they give $KH=33$ , but we have $HK$ in our formula. Looking at the picture, it's the same length to go from K to H, as it is to go from H to K, so $HK=33$ also.

We'll substitute each of the expressions into the equation above, and solve for x, then we'll solve for the lengths of each of the segments.

$HK=HJ+JK$

$33=(4x+9)+(3x+3)$

Since each term is separated by addition (no subtraction), we can omit the parentheses from substitution, and since addition is commutative, we can add in any order we want to combine our "like terms" ("like terms" are quantities that can be simplified when added together, for example numbers can be added together and simplified like 1+1 or 3+5... or 9+3. Another example of like terms is terms that have an "x" in them, in our case, the 4x and the 3x).

So, rearranging, we get the following:

$33=4x+3x+9+3$

... 4x+3x is 7x, and 9+3 is 12, so ...

$33=7x+12$

To solve for x, observe that x only shows up in the equation once, so all that we need to do is undo things. It is easiest to undo things in the reverse order of the standard order of operations of arithmetic.

Normally, in arithmetic, we multiply before we add. When undoing things in algebra, we undo the addition before we try to undo the multiplication.

To undo addition, we subtract 12 from both sides:

$33=7x+12\\33-12=7x+12-12\\21=7x$

To undo the 7 multiplied to the x, we need to divide both sides by 7:

$21=7x\\\frac{21}{7}=\frac{7x}{7}\\3=x$

Knowing the value of x, we can substitute back into the expressions for HJ, and JK, and find the other two requested values:

$HJ=4x+9\\HJ=4(3)+9\\$

Now that we're just doing arithmetic (simplifying numbers with addition, subtraction, multiplication, etc, on one side of the equation) instead of doing algebra (ex. adding something to both sides of the equation), we proceed in the standard order of operations of arithmetic. Multiplication comes before addition, so:

$HJ=4(3)+9\\HJ=12+9\\HJ=21$