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3241004551 [841]
2 years ago
6

The solution of equations system using the Substitution Method

Mathematics
1 answer:
AlexFokin [52]2 years ago
5 0

Answer:

True

Step-by-step explanation:

\begin{cases} y = 3x \\\\ 2y + 2x = 24\end{cases}

Plugging y = 3x in the equation 2y + 2x = 24, we find:

2(3x) + 2x = 24

6x + 2x = 24

8x = 24

x= 24/8

x = 3

Plugging x = 3 in the equation y = 3x we have:

y = 3*3 = 9

(x, y) = (3, 9)

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(4,31/2) + (4,-21/4)
valentinak56 [21]

Answer:

(8,41/4)

Step-by-step explanation:


8 0
3 years ago
What is the number of square units in the area of the triangle is vertices are points A ( 2,0), B( 6,0) and C (8,5)
lakkis [162]

From points (2, 0) and (6, 0), you can get base = 6 - 2 = 4.

From point (8, 5), you get a height of length 5.

A = bh/2 = 4 * 5/2 = 10

Area = 10 square units

3 0
3 years ago
It took Fred 17 days to save $36.55. At that rate, how long would it take him to save $70.95?
Vlad1618 [11]

Answer:

Fred would take 33 days to save $ 70.95.

Step-by-step explanation:

The number of days (t) is directly proportional to the quantity of money saved (c), in monetary units, then we can calculate the time taken to save $ 70.95 by simple rule of three:

t = 17\,d\,\times \frac{\$\,70.95}{\$\,36.55}

t = 33\,d

Fred would take 33 days to save $ 70.95.

4 0
2 years ago
What is the unit rate for 14lb for 2.99
Maurinko [17]
How to find the unit of rate. Well, in this case finding the unit rate would be pretty simple. All you have to do is take 14Ib and 2.99 and divide them the equation will look like this 14÷2.99=4.682274247491638796 so your answer (I think please correct me if I'm wrong and I am sooo sorry if I'm wrong) would be 4.68 or 4.6
4 0
2 years ago
Please answer correctly!!!!!
AnnZ [28]

The top number is 4 and t =1, so you need to replace t with 1, find the answer, then replace t with 2 through 4, then find the sum of all of them:


6^1-1 = 6^0  = 1

6^2-1 = 6^1 = 6

6^3-1 - 6^2 = 36

6^4-1 = 6^3 = 216


Sum = 1 + 6 + 36 + 216 = 259


The answer is B.

4 0
3 years ago
Read 2 more answers
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