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amm1812
3 years ago
7

What’s the answer (no link I give brainly)

Mathematics
1 answer:
mixer [17]3 years ago
6 0

Answer:

I belive it is C

Step-by-step explanation:

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(7x-y=7<br>(x+2y=6 estimate the solution to the system of equations ​
jolli1 [7]

Multiply the first equation by 2 to then use elimination by adding the 2 equations.

So, 14x-2y=14

+. x+2y=6

Equals 15x=20 so x=20/15=4/3

Plug in to first equation to get y

7(4/3)-y=7

28/3-y=7

28/3-y=21/3

So y=7/3

Plug both x and y into second equation to check

4/3+2(7/3)=

4/3+14/3=18/3=6 it works

So x=4/3, y=7/3

Hope this helps! Have a blessed day!

8 0
3 years ago
Can someone plsss help me with the 2 one
stepan [7]

Answer: \sqrt{73} for number 7

Step-by-step explanation:

a²+b²=c²

3²+8²=c²

9+64=c²

\sqrt{73}=\sqrt{c^2}\\\sqrt{73}=c

8 0
2 years ago
Good morning everyone :)​
Triss [41]

Answer:

Good Morning

:)

Step-by-step explanation:

5 0
2 years ago
What is the volume of the following triangular prism?
Firdavs [7]

Answer:

Step-by-step explanation:

In order to calculate the volume of a triangular prism you need 2 things:

The triangles area and the prism's height.

Any prism's volume can be calculated by multiplying its base area with its height.

The Area of a triangle can be calculated in different ways.

The most used and "normal" way is:

(width * height) / 2

Another way is by using herons formula, which looks like this:

a, b, c = different sides of the triangle (length)

s = (a + b + c) / 2

a = \sqrt{s (s-a)(s-b)(s-c)}

When you have the prism's base area (b_{a}) you just have to multiply:

b_{a}*h=V

(V = volume)

If you have any questions, just ask them in the comments below.

Have a good day! (●'◡'●)

7 0
2 years ago
Find the X- and y-intercepts for the linear equation.<br><br> 2. 2x - y = 4
RideAnS [48]

Answer:

x-intercept: (2,0)

y-intercept: (0,-4)

Step-by-step explanation:

x-intercept: when y = 0

2x - 0 = 4

x = 2

y-intercept: when x = 0

2(0) - y = 4

y = -4

3 0
3 years ago
Read 2 more answers
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