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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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Evaluate when a=15:2(a-5)+2
sasho [114]

Answer:

22

Step-by-step explanation:

if a=15

then, 2(a-5)+2= 2(15-5)+2 = 2(10)+2= 20+2=22

7 0
3 years ago
In the figure above, quadrilateral ABCD is a parallelogram. Let x represent the measure of angle GBF, y represent the measure of
ira [324]
Answers:
measure angle x = 40°
measure angle y = 35°
measure angle z = 55°

Explanation:
Part (a): getting angle x:
In triangle BED, we have:
measure angle BED = 90°
measure angle BDE = 50°
Therefore:
measure angle DBE = 180 - (90+50) = 40°
Now, we have angle DBE and angle GBF vertically opposite angles.
This means that they are both equal. Therefore angle GBF = 40°
Since angle GBF is x, therefore:
x = 40°

Part (b): getting angle y:
We know that the sum of measures of angles on a straight line is 180.
This means that:
angle GBF + angle GBC + angle CBE = 180
We have:
angle GBF = 40°
angle GBC = 105°
angle CBE = y
Therefore:
40 + 105 + y = 180
y = 35°

Part (c): getting angle z:
In triangle BCE, we have:
measure angle BCE = z
measure angle BEC = 90°
measure angle CBE = 35°
Therefore:
z + 90 + 35 = 180
z = 55°

Hope this helps :)

8 0
3 years ago
What is the factorization of the trinomial below?x3 - 12x2 + 35x?
Fed [463]
X³ - 12x² + 35x

x(x² - 12x + 35)

x(x-5)(x-7)
4 0
3 years ago
Read 2 more answers
What were the other new Twelves talking about at school?
uranmaximum [27]

Answer:

B.about their first day of training

Step-by-step explanation:

4 0
2 years ago
Substitution method need help for home work
Marizza181 [45]
-3y = x...so we sub in -3y for x in the other equation

-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7

so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x

so ur solution is (-21,7)
6 0
3 years ago
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