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dimaraw [331]
3 years ago
6

Can someone help me how would you eliminate the “y”

Mathematics
1 answer:
saw5 [17]3 years ago
8 0

Answer:

Multiply by 3 -> 3(x - y = 6)

Step-by-step explanation:

Cuz since the 2nd is positive 3y

u need a negative 3y to get rid of it

3(x - y = 6)

2x + 3y = 7

3x - 3y = 18

2x + 3y = 7

5x/5 = 25/5

x = 5

5 - y = 6

-5          -5

-y/-1= 1/-1

y = -1

(5,-1)

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Papessa [141]

Step-by-step explanation:

3. The triangle that makes up the square is a 45-90-45 triangle so x = 45°. Using Pythagorean theorem,

2y^2 = 12 ---> y^2 = 6

or

y = √6

4.This is an equilateral triangle of side 11 so

y = 11/2

To find x, use the definition of sine 60:

sin 60° = opp/hyp

= x/11

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x = 11sin60° = (11√3)/2

3 0
3 years ago
How many solutions does the system have?<br> 8x + 2y = 14<br> (8x + 2y = 4
e-lub [12.9K]

Answer:

zero

Step-by-step explanation:

they are parallel once graphed

3 0
3 years ago
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weeeeeb [17]

Answer:

The mean for Stem is 2.5

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8 0
2 years ago
Specifications for a piece of material used in the manufacture of a bed mattress require that the piece be between a Lower and U
wolverine [178]

Answer:

Hello a value is missing in your question below is the value

samples of n = 10

answer : 24.63 <  μ  < 25.370

Step-by-step explanation:

Given :

Sample size = n = 10

Z∝/2 = Z0.0256 = 1.95

next calculate for margin of error

E = Z∝/2 * ( 0.6 /  / \sqrt{10} )

   = 0.370

therefore at  94.87% confidence interval the estimated population mean is

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4 0
3 years ago
Reca was approved for a credit card that charges an apr of 26% what is her monthly interest rate?
Lesechka [4]

Answer:

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Step-by-step explanation:

Term annual percentage rate(APR) is the annual interest rate charged ona financial year for a duration of one year. APR can be converted to weekly, monthly, daily or even semi-annual rates using the below formula.

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7 0
3 years ago
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