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Julli [10]
3 years ago
7

Solve the following system of equations using the substitution method

Mathematics
2 answers:
Alecsey [184]3 years ago
4 0

Answer:

x = -5

y = -3

Step-by-step explanation:

Two equations

Solve using substitutition

y = -3

y - 3x = 12

_____________________

Since the first equation has y alone, we can plug it into the second equation for y.

(-3) - 3x = 12

-3 - 3x = 12

Add 3 to both sides :

-3x = 15

Divide -3 from both sides to get x alone :

x = -5

Now that we have x, plug it into x in the second equation :

y - 3(-5) = 12

y + 15 = 12

Solve for y :

Subtract 15 from both sides :

y = -3

Nikitich [7]3 years ago
3 0

Answer:

x = 5

y = -3

as an ordered pair: (5,-3)

Step-by-step explanation:

if y = -3, then replace y in the first equation with -3.

-3 - 3x = 12

move -3 over to the other side by adding 3 to both sides.

3x = 15

x = 5

y = -3

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What is the prime factorization of 200?<br><br> 2 2 × 5 3<br> 2 3 × 5 2<br> 2 4 × 5<br> 2 × 5 4
Misha Larkins [42]

Answer:

2^3 * 5^2

Step-by-step explanation:

We need to break 200 down into prime numbers

200 = 20*10  These are not prime

       = 4*5  * 2*5    The 4 is not prime

       = 2*2*5  * 2*5  This is prime

Rearranging

       = 2*2*2*5*5

       = 2^3 * 5^2

8 0
3 years ago
Help fast don’t understand
Pani-rosa [81]
200!!!! because it’s 5x20 in each triangle and you divide by 2 so 5x20 is 100 and 100 divided by 2 is 50 and there are 4 squares so 50 x 4 and you get 200 hope that helped!!
7 0
2 years ago
Read 2 more answers
Tristan has 45 apples and 20 pears that he is putting into gift baskets. Each basket will have the same number of apples and pea
const2013 [10]

i think 7 but i am not very sure

7 0
3 years ago
Can anyone solve this asap? i’m completing a final.
Allisa [31]

Answer:

Step-by-step explanation:

The right option es a)

because the general form is:

ax^2+bx+c

so you can easyly identify b=-5

7 0
3 years ago
(7t-2)-(-3t+1)=-3(1-3t)
Aleksandr-060686 [28]
First you need to multiple minus in second bracket, also in other side you need to multiple - 3 in bracket

7t - 2 + 3t - 1 =  - 3 + 9t \\  \\ 10t - 3 =  - 3 + 9t \\ 10t - 9t =  - 3 + 3 \\ t = 0
Final answer is 0
5 0
3 years ago
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