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ipn [44]
3 years ago
14

2x + 7y = - 10 2x + 2y = 20

Mathematics
2 answers:
Bess [88]3 years ago
5 0

Step-by-step explanation:

for the second one slope is -1 when the y intercept is (0,10)

vredina [299]3 years ago
5 0

Answer:

x=16, y= -6

Step-by-step explanation:

(2x+2y) - (2x+7y)=20-(-10)

2x+2y-2x-7y=30

-5y= 30

y=30/-5

y= -6

2x+2*-6=20

2x-12=20

2x=20+12

2x=32

x=32/2

x=16

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Help I don’t know what to do
Allushta [10]
Symbol i we call imaginary unit =>
 
This is basic

i^2= i * i = -1
i^3= i^2 * i = -1 * i = - i
i^4= i^3 * i = -i * i = - (i * i )=- (i^2)= - (-1) = 1
i^5= i^4 * i = 1 * i = i
i^6= i^5 * i = i * i = i^2 = -1
i^7= i^6 * i = -1 * i = - i
i^8= i^7 * i = -i * i = -(i * i)= -( i^2)= - (-1) = 1

You have all you need.
You conclude which simplifications of the power i are correct.

Good luck!!!!  




6 0
4 years ago
Factor 4b^2 - 9<br><br> A, (4b+3)(b-3) <br> B, (2b+3)(2b-3)<br> C,(2b-4)(2b-5)
andrey2020 [161]
The correct answer is B)
Hope this helps!
7 0
4 years ago
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Recall the creative calligraphy case we discussed in class. Suppose you have received a rush order of 55 invitations that have t
Vera_Pavlovna [14]

Answer:

About 4 minutes and 3 seconds

Step-by-step explanation:

If I have 55 invitations to be created in four hours.

4 hours × 60 =240 minutes

240/55= 4.36 minutes

So if I spend 4 minutes and 3 seconds on an invitation, I should be able to fill the order.

5 0
3 years ago
Does anyone know and can please help me , I’ll mark brainlist;)
nevsk [136]

Answer:

B

Step-by-step explanation:

order is ADBC

4 0
3 years ago
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ankoles [38]
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3 0
4 years ago
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