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2 years ago

Answer please i will give brainliest

Mathematics

1 answer:

il63 [147K]2 years ago

7 0

Step-by-step explanation:

simply add both equations

x + y = 2

-3x - y = 5

----------------

-2x + 0 = 7

x = -7/2

x + y = 2

-7/2 + y = 2

y = 2 + 7/2 = 4/2 + 7/2 = 11/2

1/2 x + 2y = -13

x - 4y = 8

first multiply the first equating by 2

x + 4y = -26

x - 4y = 8

--------------------

2x + 0 = -18

x = -18/2 = -9

x - 4y = 8

-9 - 4y = 8

-4y = 17

y = -17/4

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pychu [463]

The value of the function is 6

Step-by-step explanation:

The function that we have in this problem is

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This means that:

when x is between -4 (excluded) and 6 (excluded), the value of the function is $3x^1+2$

when x is between 6 (included) and 9 (excluded), the value of the function is 6

In this problem, we are asked to evaluate f(x) when x = 6. Therefore, we are in the second case: therefore, the value of the function is 6,

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3 years ago

Please Help I Don't Undertand.

frozen [14]

If triangles AMN and ABC are similar, then

AM/AB = AN/AC

AM/(AM + MB) = AN/(AN + NC)

Check if this is true:

AM/AB = 21/(21 + 9) = 21/30 = 7/10

AN/AC = 14/(14 + 6) = 14/20 = 7/10

The angle at vertex A is common to both of the triangles.

Then by the side-angle-side (SAS) similarity theorem, the triangles are indeed similar.

4 0

1 year ago

Steven is x years old. John is 3 years older than Steven. In terms of x, how old will John be in 6 years?

Mumz [18]

Answer:

Step-by-step explanation:

6 + 3=9

5 0

3 years ago

-25 Points-

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