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Bond [772]
3 years ago
5

The value of x and y of given equation by using cramer's rule; 2x-y=5, x-2y=1​

Mathematics
1 answer:
Firdavs [7]3 years ago
5 0

Answer:

x=3 and y=1

Step-by-step explanation:

First find the deteminant

That is ad-bc

ᵃ ᵇ

ᶜ ᵈ

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Find the equation of the line that is parallel to 3x-4y=6 and passes through the point (-12,10)
horsena [70]
Answer:

y = 3/4x + 19

Explanation:

First we need to write the equation in the form y=mx+c:

3x-4y=6
-4y=-3x+6
y=3/4x-3/2

Because the lines are parallel, we can deduce that the gradients (m) are equal. That means that the gradient of our new equation will also be 3/4.

We will now use the following equation:

y - y1 = m(x - x1)

We will substitute in the new line’s gradient as well as the coordinates we were given:

y - 10 = 3/4(x + 12)

Now we solve this equation into the form y=mx+c:

y - 10 = 3/4x + 9
y = 3/4x + 19
5 0
3 years ago
Read 2 more answers
For what values of h and k does the linear system have infinitely many solutions?
Sophie [7]

Answer:

h=-32 and k=-24

Step-by-step explanation:

4x_1 + 3x_2 = -1:a_1x_1 + b_1x_2=c_1\\hx_1 +kx_2=8:a_2x_1+b_2x_2=c_2

For infinitely many solutions, lines must be same;\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\\\\=\frac{4}{h}=\frac{3}{k}=\frac{-1}{8}\\\\h=-32, k=-24

7 0
3 years ago
Select the pair(s) of ratios that form a proportion.
ryzh [129]

Answer:

C is the only choice that forms a proportion

Step-by-step explanation:

a. 24/31, 20/27

(31 is prime)

b. 8/9, 24/36

(this one doesn't work since it would have to be 3/4) which isn't a proportion

c. 16/5, 64/20

(both 16/5  *4 = 64/20) so it works

d. 6/4 , 15/10

(similar situation to choice b the ratio wont work since 6 doesn't go into 15)

5 0
2 years ago
F(x) = 5x^3 – 4x - 12
erik [133]

Answer: -12

Step-by-step explanation:

7 0
3 years ago
The radius of a circle can be approximated using the expression √(A/3). A circular kiddie swimming pool has an area about 28 squ
lara31 [8.8K]

Answer:

yeah I know you are literally perfect for you to be home

5 0
3 years ago
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