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Tema [17]
2 years ago
10

X + 2y = 5

Mathematics
2 answers:
malfutka [58]2 years ago
7 0
C.) 5 is the value of X and the value of Y is 5/2
Arada [10]2 years ago
6 0

Answer:  The correct option is (a). - 5.

Step-by-step explanation:  We are given to find the value of the system determinant for the following system of linear equations :

x+2y=5,\\\\x-3y=7.

The system determinant for the above system is written as

\begin{vmatrix}1 & 2\\ 1 & -3\end{vmatrix}

And, its value will be

\begin{vmatrix}1 & 2\\ 1 & -3\end{vmatrix}=1\times (-3)-2\times 1=-3-2=-5.

Thus, the required value is - 5.

Option (a) is CORRECT.

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A roll of carpet that contains 250 yd of carpet will cover how many rooms if each room requires 7 3/4 yards of carpet?
iren [92.7K]

Answer: 32 room

Step-by-step explanation:

7\frac{3}{4} =\frac{4(7)+3}{4} =\frac{28+3}{4} =\frac{31}{4}=7.75

<u>If 1 room = 7.75 yd of carpet ⇒ x rooms = 250 yd of carpet</u>

Use proportions & cross-multiply to solve:

\frac{1}{7.75} =\frac{x}{250}\\7.75x=250\\x=\frac{250}{7.75} =32.258

So 250 yd of carpet can cover about 32 rooms.

3 0
2 years ago
Help with geometry!!!!!!!!!!!!
slamgirl [31]

Answer:

ok what is it

Explanation:

hi i am Elena Sweet  but yu can call me Elena

7 0
3 years ago
One ordered pair $(a,b)$ satisfies the two equations $ab^4 = 12$ and $a^5 b^5 = 7776$. what is the value of $a$ in this ordered
LenaWriter [7]
This is the concept of algebra, given that ab^4=12 and a^5b^5=7776, the value if a will be found as follows:
ab^4=12
a=12/b^4
also;
a^5=7776/b^5
thus;
a=(7776/b^5)^(1/5)
a=6/b
thus the value of a will be:
6/b=12/b^4
dividing both sides by b we get:
6=12/b^3
multiplying both sides by b^3 we get
6b^3=12
b^3=2
hence;
b=2^(1/3)



8 0
3 years ago
What is the measure of this angle?
meriva

Answer: D. 170

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Ethan’s favorite kind of exercise is running. He runs on a path that is 1.75 miles long. Last week, Ethan ran on the path 6 time
Basile [38]

Answer:

10.5 miles

Step-by-step explanation:

You multiply the distance with the number of times he ran.

7 0
3 years ago
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