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lakkis [162]
3 years ago
7

Solve the pair of simultaneous equations: 2x + y=7 x-2y+1

Mathematics
2 answers:
son4ous [18]3 years ago
4 0
2x + y = 7 is an eqn of a straight liney = -2x +7with a slope of -2, and an intercept of 7 the table is for a straight line with a positive slope of 2found from e.g using the first two points in the table: (1 - -1)/(-3 -  -4) = 2and an intercept of 7y = 2x + 7 or-2x + y = 7
makkiz [27]3 years ago
4 0
This is middle school right
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jerry needs 2 gallons of paint to 600 square feet of wall space. how much area could he cover with 5 gallons of paint
klemol [59]

Answer:

1500 square feet

Step-by-step explanation:

2 gallons of paint can cover 600 square feet

the ratio is 2:600 if you simplify you will get 1:300

We need to find how much we can cover with 5 gallons so just times each side of the ratio by 5 after simplifying.

Hope this helps

4 0
3 years ago
Write an equation for the nth term of the arithmetic sequence.
tresset_1 [31]

Answer:

<h3>              \bold{a_n=6n-3}\\\\\bold{a_{50}=297} </h3>

Step-by-step explanation:

3, 9, 15, 21,  ...

9-3 = 6;   15-9 = 6;   21-15 = 6   ⇒  d = 6

first term:  a = 3

difference:  d = 6

so the formula:

                         a_n=a+d(n-1)\\\\a_n=69+6(n-1)\\\\a_n =3+6n-6\\\\\underline{a_n=6n-3}                        

and:

   a_{50}=6\cdot50-3=300-3=297

5 0
2 years ago
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Gwar [14]
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5 0
3 years ago
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The answer is A.

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