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Dmitry [639]
3 years ago
10

Solve the system of equations. x + 3y = −1 2x + 2y = 6

Mathematics
1 answer:
mihalych1998 [28]3 years ago
5 0
  1x+ 3y = -12x + 2y = 6
+12x         +12x
  13x + 3y = 2y = 6 
           +3y  +3y
  13x = 5y = 6 
13x = 5y and 5y = 6 
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Martin deposits $200 in a savings account that earns 5% annual interest. four years later, cary deposits $200 in an account earn
Scrat [10]
<span>Martin deposits $200 in a savings account that earns 5% annual interest.

year         interest                       balance

1              200 * 5%                    200(1.05)

2              200(1.05) * 5%          200(1.05)^2

3              200(1.05)^2*5%        200(1.05)^3

y                                                200(1.05)^y

=> m = 200 (1.05)^y

four years later, cary deposits $200 in an account earning the same interest.

</span>
<span><span>year         interest                       balance

5              200 * 5%                    200(1.05)

6              200(1.05) * 5%          200(1.05)^2

7             200(1.05)^2*5%        200(1.05)^3

y                                                200(1.05)^(y-4)

=> c = 200(1.05)^ (y-4)
</span>
Answer:
Martin: 200(1.05)^y
Cary: 200(1.05)^(y–4)
</span>
3 0
3 years ago
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Ksju [112]
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2 years ago
A Right Cylinder has a radius of 3 cm and a height of 5 cm.
Shtirlitz [24]

Answer:

V = 141.37 cm³

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i. Doubling the radius to 6 cm, while the height remains 5

Step-by-step explanation:

Given that :

Radius, r = 3cm

Height, h = 5cm

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V = πr²h

V = π * 3² * 5

V = 141.37166

V = 141.37 cm³

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2 * π * 3(3 +5)

18.849555(8)

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Volume at r = 6 ; h = 5

V = π * 6² * 5

V = 565.48667 cm³

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V = π * 3² * 15

V = 424.11500 cm³

To increase volume,

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3 years ago
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konstantin123 [22]

Answer:

C

Step-by-step explanation:

No, she multiplied the exponents instead of adding them.

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Answer:

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Step-by-step explanation:

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