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Art [367]
4 years ago
15

X + 2y = 5

Mathematics
2 answers:
Inessa05 [86]4 years ago
8 0

Answer:  The correct option is (C) 2.

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

x+2y=5~~~~~~~~~~~~~~~~~~~~~~(i)\\\\x-3y=7~~~~~~~~~~~~~~~~~~~~~~(ii)

The y-determinant for the above system is written as

D(y)=\begin{vmatrix}1 & 5\\ 1 & 7\end{vmatrix}

The value of the y-determinant will be

D(y)=\begin{vmatrix}1 & 5\\ 1 & 7\end{vmatrix}=1\times7-1\times5=7-5=2..

Thus, the required value of the y-determinant is 2.

Option (C) is CORRECT.

Dafna11 [192]4 years ago
3 0
B. 2
if any other number was in there i dont think it would work because its neg
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Ravi has $445 in his savings account. He wants to save at least $795. Write and solve an inequality to determine how much more m
Alexxandr [17]

Given

Ravi has $445 in his savings account.

He wants to save at least $795.

Write and solve an inequality to determine how much more money Ravi must save to reach his goal.

To proof

As given

amount of money in dollars Ravi must save to reach his goal be = d

Ravi has in his savings account = $445

He wants to save at least $795

than the inequality become in the form

445 + d \leq 795\\ 795 - 445 \leq d\\ 350\leq d

thus $350 Ravi must save to reach his goal.

Hence proved

3 0
3 years ago
The perimeter of a rectangular garden is
olganol [36]
Perimeter = 2 ( width + length)
294 = 2 (56 + length)
294/2 = 56 + length
147 = 56 + length
147 - 56 = length
91 = length

so the length is 91 feet
6 0
3 years ago
What is the total amount that Matthew's bank will receive after lending him $8,000 for four years at an interest rate of 6 perce
bija089 [108]

Answer:

Total amount that Matthew's bank will receive is $10099.81.

Step-by-step explanation:

We need to find the amount Matthew's bank will receive after lending him $8,000 for four years at an interest rate of 6 percent, compounded annually.

The formula for compound interest is:

A=P(1+r)^n

Where A = future value

P= Principal Amount

r = interest rate

and n= time

So in the question we are given:

P= $8000

r = 6% or 0.06

t = 4 (since 4 yeras compounded annually)

A= 8000*(1+0.06)^4

A= 8000*(1.06)^4

A= 10099.81

So, total amount that Matthew's bank will receive is $10099.81.

6 0
3 years ago
PLS HELP
allochka39001 [22]

Answer:

Step-by-step explanation:

It's in the same order, from broker 1 down to broker 5. Straight up

5 0
3 years ago
WILL BE MARKED BRAINLIEST!!!! <br> x-y=4 <br> How do you get the y alone?
yanalaym [24]

The answer is y = x-4.

<u>Step-by-step explanation</u>:

  • The given expression is x-y=4
  • Keep y alone on one side and move remaining terms to the other side.

⇒ -y = 4-x

  • To have y alone, Multiply the above expression with -ve sign on both sides.

⇒ y = x-4

5 0
3 years ago
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