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Roman55 [17]
2 years ago
13

Solve the system of equations using the substitution method.

Mathematics
2 answers:
Minchanka [31]2 years ago
4 0

Answer:

y =  - 2 \\ x =  - 2

Step-by-step explanation:

<h3>Question</h3>

- 5x - 3y = 16  \:  \:  =  > 1 \\ y = x =  > 2

Now you can write the 1st equation like this.

- 5x - 3y = 16 \\ x = y \\ so \:  \: you \:  \:  \: can \:  \: write \\  - 5y -  3y = 16  \:  \:  \:  =  > 3

Now simply Solve the 3rd equation

- 5y - 3y = 16 \\  - 8y = 16 \\  \frac{ - 8y}{ - 8}  =  \frac{16}{ - 8}  \\ y =  - 2

<em>Now</em><em> </em><em>replac</em><em>e</em><em> </em><em>y</em><em> </em><em>as</em><em> </em><em>2</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>2</em><em>n</em><em>d</em><em> </em><em>equation</em><em> </em><em>like</em><em> </em><em>this</em>

<em>y = x \\  - 2 =  - 2</em>

<em>Now</em><em> </em><em>let's</em><em> </em><em>check</em><em> </em><em>whether</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>correct</em><em> </em><em>or</em><em> </em><em>wrong</em>

<em>- 5x - 3y = 16 \\   -  5 \times  - 2 - 3  \times  - 2 = 16 \\ 10 + 6 = 16 \\ 16 = 16</em>

<em>Yes</em><em>,</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>correct</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em> </em><em>!</em><em>!</em>

Galina-37 [17]2 years ago
3 0

Answer:

x = y = -2

Step-by-step explanation:

Hope this helps

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F(x) = 4x+1 and<br> g(x) = x^2 +1<br> find (F o g) (3) =
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Answer:

g(3)= 3^2+1= 9+1=10

f(10)= 4(10)+1= 41

7 0
3 years ago
A cylinder has a radius of 8 meters and a height of 4 meters. .
Novay_Z [31]
<h2><u>Solution</u> :-</h2>

Given : Radius of cylinder = 8 m

Height = 4 m

Volume of cylinder = πr²h cu. units

= 22/7 × 8 × 8 × 4 m³

= 804.57 m³ (approx.)

Curved surface area = 2πrh sq. units

= 2 × 22/7 × 8 × 4 m²

= 201.14 m² (approx.)

Total surface area = 2πr(r + h) sq. units

= 2 × 22/7 × 8 (8 + 4) m²

= 2 × 22/7 × 8 × 12 m²

= 603.43 (approx.)

4 0
3 years ago
D. 350.00
Maksim231197 [3]
The answer is B i believe
8 0
3 years ago
Read 2 more answers
I really need help on this
enyata [817]

Answer:

a is correct

Step-by-step explanation:

it is correct because we are adding

8 0
2 years ago
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Good morning please help me im in desperate need thxs
Marat540 [252]

Answer:

Should be 4/7

Hope it helps have a good day!

7 0
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