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const2013 [10]
3 years ago
15

-9x - 3y = 6 find the value of y when x equals -2

Mathematics
2 answers:
Rainbow [258]3 years ago
7 0

Answer:

y = 4

Step-by-step explanation:

-9×-2 = 18

18 - 3y = 6

18 - 6 = 12

12 ÷ 3 = 4

18 - 12 = 6

That's the way I did it. I hope that made sense!

belka [17]3 years ago
4 0

Answer:

y=4

Step-by-step explanation:

-9x-3y=6\\18-3y=6\\-3y=-12\\y=4

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Write an equation for the line that is parallel to the given line and passes through the given point
Evgesh-ka [11]

Answer:

y = 2x + 2

Step-by-step explanation:

The equation ofa line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 2x + 4 ← is in slope- intercept form

with m = 2

Parallel lines have equal slopes , thus

y = 2x + c ← is the partial equation

To find c substitute (3, 8) into the partial equation

8 = 6 + c ⇒ c = 8 - 6 = 2

y = 2x + 2 ← equation of parallel line

4 0
3 years ago
Anna paid € 2800 for a dress. Payment was made after the price of the dress was reduced by 30%. What was the starting price?​
aliina [53]

Answer:

$4000

Step-by-step explanation:

so $2800 was the starting price

100%-30%=70%

So 2800=70%

2800/7=400

400=10%

400*10=$4000

5 0
2 years ago
two glasses of milk and 3 snack bars have a total of 78 carbohydrates​ (carbs), and 4 glasses of milk and 3 snack bars have a to
padilas [110]

Answer:

Each glass of milk is 9 carbs.

Each snack bar is 19.7 carbs.

Step-by-step explanation:

1. I know that 2 glasses of milk with 3 snack bars is 78 carbs.

The next part of the sentence has two times the amount of milk with the same amount of snack bars for 96 carbs.

Now, I will find the difference in the amount of carbs.

96 - 78 = 18 carbs.

So two glasses of milk = 18 carbs.

18 ÷ 2 = 9 carbs

So, each glass of milk is 9 carbs.

2. Since we know this, we can subtract the amount of carbs from the glasses of milk from the total amount of carbs.

78 - 19 = 59

In the first scenario, there are 59 carbs per 3 snack bars.

To find the amount of each snack bar, divide 59 by 3.

59 ÷ 3 = 19.7 when rounded to the nearest tenth.

Therefore, each snack bar is 19.7 carbs.

3 0
2 years ago
Read 2 more answers
A tablet is on sale for 30% off. the regular price is $185. how much money will you save?
Burka [1]

Answer:

185×30÷100=55.5

HERES YOUR answer

8 0
3 years ago
0.5x - 4< 1
Pie

Answer:

5.0-1...............

8 0
3 years ago
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