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3 years ago

Jason has three times as many chickens as he has dogs.if he has 18chickens,how many dogs does he have?

Mathematics

2 answers:

vaieri [72.5K]3 years ago

7 0

3x=18

---- ---

3 3

6 dogs

first, I wrote it as a equation I knew that times means multiply so I took the 3 because it says three times and put 3x because we don't know how many dogs he has

second, I just put = 18 because that's how many chickens he has in total

third, I needed to isolate the variable so I did divided 3 on both saids and 3x divide about 3 well it cancels it out so it would be 1 which x can be used as one, then I did 18 divided by 3 because whatever you do to one side you do to the other and then I got 6 so the answer is 6

answer = 6

alukav5142 [94]3 years ago

4 0

18 chickens ÷ 3 times = 6 dogs

Jason has 6 dogs.

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2 years ago

The formula below, Newton's law of cooling, allows us to calculate the temperature of an object as it cools. T = R + (T0 − R)e-k

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The Newton`s law of cooling:
T = R + ( To - R ) * e ^(-kt )
We know that: T = 32° F ( the water freezes at 32° F ), To = 55° F, R = 5° F
and the cooling rate is: k = 0.012.
33° F = 5° F + ( 55° F - 5° F ) · 2.72^(-0.012 t )
33 - 5 = 50 · 2.72^(-0.012 t)
27 = 50 · 2.72^(-0.012 t)
2.72^(-0.012 t) = 27/50
1 / 2.72^(0.012 t) = 0.54
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Answer: It would take 50 minutes.

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3 years ago

Read 2 more answers

Find the polynomial of lowest degree with only real coefficients and having the given zeros. -7i and square root of 2

mario62 [17]

Answer:

x³ - (√2)x² + 49x - 49√2

Step-by-step explanation:

If one root is -7i, another root must be 7i. You can't just have one root with i. The other roos is √2, so there are 3 roots.

x = -7i is one root,

(x + 7i) = 0 is the factor

x = 7i is one root

(x - 7i) = 0 is the factor

x = √2 is one root

(x - √2) = 0 is the factor

So the factors are...

(x + 7i)(x - 7i)(x - √2) = 0

Multiply these out to find the polynomial...

(x + 7i)(x - 7i) = x² + 7i - 7i - 49i²

Which simplifies to

x² - 49i² since i² = -1 , we have

x² - 49(-1)

x² + 49

Now we have...

(x² + 49)(x - √2) = 0

Now foil this out...

x²(x) - x²(-√2) + 49(x) + 49(-√2) = 0

x³ + (√2)x² + 49x - 49√2

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3 years ago

The MagicSoft software company has a proposal to the city council of Alva, Florida, to relocate there. The proposal

lana66690 [7]

Answer:

b. $2.3 million

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<u>Correct estimate is total generated amount minus salaries:</u>

$3.3 million - $1 million = $2.3 million

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2 years ago

"Each week, a subcommittee of four individuals is formed from among the members of a committee comprising seven individuals. Two

denis-greek [22]

Answer:

140 weeks.

Step-by-step explanation:

We are being asked for the maximum number that can elapse without having 2 subcommitees with the same members and the same chair. Notice that the secretary is not mentioned in this statement, so we can ignore that position.

Now, the maximum number of weeks would be equal to the total possible combinations of subcommitees that can be formed from the 7 individuals commiteed, times the number of options that can sit at the chair possition.

The total possible combinations of subcommitees that can be formed from the 7 individuals can be expressed like the following expression. Notice that there is no a particular order to be considered, so we use the combination formula:

$\left[\begin{array}{ccc}7\\4\end{array}\right]$ = $\frac{7!}{4!(7-4)!}$ = 35

Now, each of the 4 individuals have the same probability of being chosen as the chair commitee. So, we have to multiply 4 times the number of possible subcommitees in order to arrive our answer:

x = 35 * 4 = 140

This would be the maximum number of subcommitees that can be formed with no subcommitees with the same members and the same chair occurring.

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2 years ago