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RoseWind [281]
3 years ago
6

Select the equation and solution for the problem. Let x represent the unknown number A total of 21 people on a sports team are r

iding in 3 vans. How many people are riding in each van if each van is carrying the same number of people?
A. x+3=21 x=18
B. x-3=21 x=24
C. 3x =21 x=7
D. 21x =21 x= 1/7
Mathematics
1 answer:
pickupchik [31]3 years ago
7 0

Answer:

The answer is C.

Step-by-step explanation:

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How would i solve y=x+z/a-x and solve for x
Alborosie

Answer:

<h3>ya-z/1+y</h3>

Step-by-step explanation:

Making x the subject of the formula;

y=x+z/a-x

Cross multiply

y(a-x) = x+z

ya - yx = x+z

Collect like terms

x+yx = ya - z

x(1+y) = ya - z

x = ya-z/1+y

Hence the value of x is ya-z/1+y

4 0
3 years ago
There are twelve signs of the zodiac. How many people must be present for there to be at least a 50% chance that two or more of
Nutka1998 [239]

Answer:

5

Step-by-step explanation:

Given that each zodiac sign occupies 1/12 of a year.

Then the minimum number of persons for Y[all different signs] < 0.5,

The probability of at least two having the same sign is 1 minus the probability of all having different signs.

This can be represented as A [at least 2 person share the same sign] = 1 - Y[all different signs] must be > 0.5

Therefore we have 1 - 12/12 *11/12 * 10/12 *9/12 *8/12 = 0.38

This implies that the lowest number will be found to be 5

Hence, the correct answer is 5.

4 0
3 years ago
Choose Yes or No to tell whether the Addition Property of Inequality can be used to solve each statement. w – 4 &gt; –10
Andreyy89

Answer:

<em> Yes.  </em>

Step-by-step explanation:

I believe you are missing <em>some answers</em>, but here is the image of <em>all the correct answers.</em>

5 0
3 years ago
F(x)=6x-18 sub in f(x/3), f(x)/3
arlik [135]

These are two separate problems: in the first we will have to substitute in a new value for x into the original equation and in the second we will manipulate the preexisting equation for f(x).

To begin, we will sub in f(x/3). To do this, we will substitute each variable x in the equation (in this case there is only one) with x/3, and then simplify the resulting equation.

f(x) = 6x - 18

f(x/3) = 6(x/3) - 18

To simplify, we should distribute the 6 on the right side of the equation.

f(x/3) = 6x/3 - 18

Now, we can divide the first term on the right side to finalize our simplification.

f(x/3) = 2x -18

Secondly, we are asked to find f(x)/3. To do this, we will take our original value for f(x), and then simplify divide that entire function by 3.

f(x) = 6x - 18

f(x)/3 = (6x-18)/3

This means that we must divide each term of the binomial by 3, so we are really computing

f(x)/3 = 6x/3 - 18/3

We can simplify by dividing both of the terms.

f(x)/3 = 2x - 6

Therefore, your answer is that f(x/3) = 2x - 18, but f(x)/3 = 2x - 6. It is important to recognize that these are two similar, yet different, answers.

Hope this helps!


8 0
3 years ago
What is the range of the function y = 3x + 2 when the domain is {-3, 0, 2}?​
Firlakuza [10]

Answer:

{-7, 2, 8}

Step-by-step explanation:

We see that the domain is limited to three x-values: -3, 0 and 2. To find the range (which is the set of all y-values) we just need to plug-in these x-values and find the corresponding y-values.

So our equation is:

y = 3x + 2

Then we substitute for the x-values:

y = 3(-3) + 2

y = -9 + 2

y = -7

y = 3(0) + 2

y = 0 + 2

y = 2

y = 3(2) + 2

y = 6 + 2

y = 8

So our range would be {-7, 2, 8}.

8 0
3 years ago
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