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guapka [62]
3 years ago
15

Solve the pair simultaneous equations 2x+y=7x -2y=1​

Mathematics
1 answer:
Alex777 [14]3 years ago
6 0

Answer:

y = 1

x = 3

Step-by-step explanation:

y = 7 - 2x

x - 2y = 1

5x - 14 = 1

y = 7 - 2x

x = 3

y = 7 - 2x

y = 1

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The perimeter of a triangle is 64cm ,the sides are the ratio 6:5:5 , work out the area of the triangle
Fofino [41]
The area is 192 cm^2

the sides are 20 20 24 with the base being 24

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b= 16 = height

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4 0
4 years ago
juliet school collected 480 can food last month witch represented 80 percent of rheir goal. What is the toatal of her goal? PLEA
Dmitriy789 [7]

Answer: 600 canned foods was the total.

Step-by-step explanation: We need to find out what‘s 100% of 480. Since 480 canned foods is 80%, we can divide 480 by 8 which gives us 60. Aka 60 canned foods = 10%. Now, we multiply 60 by 10 which gives us 600. Hope this helps!

3 0
3 years ago
Can please cross multiply this for me :)
Alchen [17]
64 x 100 = 6400
11 x x = 11x
I’ll solve this out for you
11x = 6400
Divide 11 from both sides
x = 581.8
Hope this helps!
4 0
4 years ago
Read 2 more answers
19) In the xy-plane, what is the y-intercept of the graph of the equation<br> y=3(x-1)(x+2)?
Dahasolnce [82]

Answer:

- 6

Step-by-step explanation:

Given

y = 3(x - 1)(x + 2) ← expand factors using FOIL

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To find the y- intercept let x = 0, thus

y = 3(0)² + 3(0) - 6 = 0 + 0 - 6 = - 6

Thus y- intercept = - 6 ⇒ (0, - 6 )

3 0
4 years ago
Is this expression equivalent?<br> 3v+v and 12v over 3
xeze [42]
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7 0
4 years ago
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