What is the volume of a ball that has a diameter of 9 inches? Round to the nearest whole number

Answers

Answer 1

Answer: ball=sphere
Vsphere=pir^3
d/2=r
d=9
9/2=4.5=r
V=pi4.5^3
V=pi91.125
aprox pi=3.141592
V=286.227
round
V=286 in^3

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If you add 5 to me and then divide by 9, you get3. What number am I

Answers

First we need to reverse all of these operations. So, you need to start with three. It says to divide by nine, so then you multiply three by nine. Three times nine is equivalent to 27.

Now you have the number 26. Reverse the addition to subtracting and you get the final answer 22.

Let's check it. 22 plus five is 27. 27 divided by nine equals three.

So you final answer is three.

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$x-number\n\n(x+5)/(9)=3\ \ \ \ \ \ |\cdot9\n\nx+5=27\n\nx=27-5\n\nx=22\n\nYou\ are\ 22$

Which of the following numbers is not part of the solution to x > 1?1
1.2
4
8

Answers

1 is not a part of the solution because 1 is not greater than 1. But 1.2, 4, and 8, are all greater than 1.

Answer: A. 1

Step-by-step explanation:

1 is not bigger then 1 it is equal so therefore it can’t be part of the solution.

How do you solve a quadratic equation

Answers

$- \beta +- √( \beta ) {2} -4ac (all divided by)/2a$

You should already know how to factor quadratics. (If not, review Factoring Quadratics.) The new thing here is that the quadratic is part of an equation, and you're told to solve for the values of x that make the equation true. Here's how it works: Solve (x – 3)(x – 4) = 0. Okay, this one is already factored for me. But how do I solve this?Think: If I multiply two things together and the result is zero, what can I say about those two things? I can say that at least one of them must also be zero. That is, the only way to multiply and get zero is to multiply by zero. (This is sometimes called "The Zero Factor Property" or "Rule" or "Principle".) Warning: You cannot make this statement about any other number! You can only make the conclusion about the factors ("one of them must equal zero") if the product itself equals zero. If the above product of factors had been equal to, say, 4, then we would still have no idea what was the value of either of the factors; we would not have been able (we would not have been mathematically "justified") in makingany claim about the values of the factors. Because you can only make the conclusion ("one of the factors must have equaled zero") if the product equals zero, you must always have the equation in the form "(quadratic) equals (zero)" before you can attempt to solve it. The Zero Factor Principle tells me that at least one of the factors must be equal to zero. Since at least one of the factors must be zero, I'll set them eachequal to zero:x – 3 = 0   or   x – 4 = 0This gives me simple linear equations, and they're easy to solve:x = 3 or  x = 4And this is the solution they're looking for:  x = 3, 4Note that "x = 3, 4" means the same thing as "x = 3 or  x = 4"; the only difference is the formatting. The "x = 3, 4" format is more-typically used.One important issue should be mentioned at this point: Just as with linear equations, the solutions to quadratic equations may be verified by plugging them back into the original equation, and making sure that they work, that they result in a true statement. For the above example, we would do the following: Checking x = 3 in (x – 3)(x – 4) = 0:([3] – 3)([3] – 4) ?=? 0
     (3 – 3)(3 – 4) ?=? 0
               (0)(–1) ?=? 0
                       0   =   0Checking x = 4 in (x – 3)(x – 4) = 0:([4] – 3)([4] – 4) ?=? 0
     (4 – 3)(4 – 4) ?=? 0
                 (1)(0) ?=? 0
                       0   =   0So both solutions "check" and are thus verified as being correct.Solve x2 + 5x + 6 = 0.This equation is already in the form "(quadratic) equals (zero)" but, unlike the previous example, this isn't yet factored. The quadratic must first be factored, because it is only when you MULTIPLY and get zero that you can say anything about the factors and solutions. You can't conclude anything about the individual terms of the unfactored quadratic (like the 5x or the 6), because you can add lots of stuff that totals zero.So the first thing I have to do is factor:x2 + 5x + 6 = (x + 2)(x + 3)Set this equal to zero:(x + 2)(x + 3) = 0Solve each factor: Copyright © Elizabeth Stapel 2002-2011 All Rights Reservedx + 2 = 0  or  x + 3 = 0
x = –2 or  x = – 3The solution to x2 + 5x + 6 = 0 is x = –3, –2Checking x = –3 and x = –2 in x2 + 5x + 6 = 0:[–3]2 + 5[–3] + 6 ?=? 0
           9 – 15 + 6 ?=? 0
           9 + 6 – 15 ?=? 0
               15 – 15 ?=? 0
                        0   =   0[–2]2 + 5[–2] + 6 ?=? 0
           4 – 10 + 6 ?=? 0
           4 + 6 – 10 ?=? 0
               10 – 10 ?=? 0
                        0   =   0So both solutions "check".Solve x2 – 3 = 2x.This equation is not in "(quadratic) equals (zero)" form, so I can't try to solve it yet. The first thing I need to do is get all the terms over on one side, with zero on the other side. Only then can I factor and solve:x2 – 3 = 2x
x2 – 2x – 3 = 0
(x – 3)(x + 1) = 0
x – 3 = 0  or  x + 1 = 0
x = 3  or  x = –1Then the solution to x2 – 3 = 2x is x = –1, 3Solve (x + 2)(x + 3) = 12.It is very common for students to see this type of problem, and say:"Cool! It's already factored! So I'll set the factors equal to 12 and
solve to get x = 10 and x = 9. That was easy!"Yeah, it was easy; it was also (warning!) wrong. Besides the fact that (10 + 2)(9 + 3) does not equal 12, you should never forget that you must have "(quadratic) equals (zero)" before you can solve.So, tempting though it may be, I cannot set each of the factors above equal to the other side of the equation and "solve". Instead, I first have to multiply out and simplify the left-hand side, then subtract the 12 over to the left-hand side, and re-factor. Only then can I solve.(x + 2)(x + 3) = 12
x2 + 5x + 6 = 12
x2 + 5x – 6 = 0
(x + 6)(x – 1) = 0
x + 6 = 0  or   x – 1 = 0
x = –6  or   x = 1Then the solution to (x + 2)(x + 3) = 12 is x = –6, 1

What is the mass of a peach?

Answers

There are 12 peaches in a carton. The mean mass of all the peaches is 175 grams.

There are 12 peaches in a carton
So the mass of the peaches are 175g

Which ordered pair in the form (x,y) is a solution of this equation? 7x-5=1A. (-3,-2)
B. (-2,-3)
C. (0,4)
D. (4,0)

Answers

ANSWER

B. (-2,-3)

EXPLANATION

The given equation is

$7x - 5y = 1$

We want determine which of the ordered pairs is a solution to the given equation.

For point A(-3,-2)

$7( - 3) - 5( - 2) = 1$

$- 21 + 7 = 1$

This statement is false.

For option B(-2,-3)

We have

$7( - 2) - 5( - 3) = 1$

$- 14 + 15 = 1$

For option C(0,4)

We have

$7(0) - 5(4)=1$

$0 - 20=1$

For option D(4,0)

We have

$7(4) - 5(0)=1$

$28 - 0=1$

This statement is false.

Select the correct operator for the following exponential expression.explain me how to do this?

Answers

Answer:

obviously c

Step-by-step explanation:

9 is more than 8

Answer:

Step-by-step explanation:

4²⁰ ? 20⁴

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