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balandron [24]
3 years ago
12

2x+y=8 x+y=4 Where do they intersect at?

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0

Answer:

{ \bf{2x + y = 8 -  -  - (a)}} \\ { \bf{x + y = 4 -  -  - (b)}} \\ a - b :  \\ x = 4 \\ 4 + y = 4 \\ y = 0 \\ { \tt{they \: intersect \: at \: (4, \: 0)}}

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Cris borrowed money from her brother 6 months ago. She now owes him 56.50. She has not borrowed and she is paying 15.75 on her d
densk [106]

Answer:2.19 monthd

Step-by-step explanation:

Cris borrowed money from her brother 6 months ago. She now owes him 56.50

Let x= original money borrowed from her brother 6 months ago

She has not borrowed and she is paying 15.75 on her debt each month for the last 6 months. This means in the past 6 months,she has paid 15.75×6= 94.5

She now owes him 56.50. This means original money,x-56.50 =94.5

x = 94.5+56.50=151

If she now increases her monthly payment to 25.75, let the number of months be y, she will pay 25.75y in y months

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7 0
3 years ago
What are the coordinates of point B?
zaharov [31]

Point a is at (-2,4) => (x1,y1)

Midpoint is (2.5, 3.5) => (a,b)

Point B is (x2, y2)

To find midpoint we use formula

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a= 2.5, b= 3.5, x1= -2  and y1= 4

Plug in all the values and findout x2, y2

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multiply 2 on both sides to remove fraction

(5 = -2+x2 , 7 = 4+ y2)

5 = -2+x2, so x2= 7

7 = 4+ y2, so y2= 3

The point B is ( 7, 3)

3 0
3 years ago
5 cm
Anettt [7]

Step-by-step explanation:

it's 22 due to the sum all the 2 smallest sides bigger than the biggest

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Answer:

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Step-by-step explanation:

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a24 = a1 + 23d

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a1 = -9/3 = -3.

So the nth term an =  -3 + 4/3(n - 1)

an = -3 + 4/3 n - 4/3

an = 4/3n - 13/3

6 0
3 years ago
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Ira Lisetskai [31]
The answer for this would be B
8 0
2 years ago
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