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lana66690 [7]
4 years ago
6

2x+2y=4 2x=y=-3 Solve

Mathematics
1 answer:
zubka84 [21]4 years ago
7 0

Answer:

-1+2=y and i dont understand the second one

Step-by-step explanation:

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A pair of equations is shown below:
horrorfan [7]

Answer:

A. x=2, y = 7.

B. (2, 7).

Step-by-step explanation:

A. You can eliminate y by subtracting the equations:

y =  8x - 9

y =  4x - 1       Subtract:

0 =  4x - 8

4x = 8

x = 8/4 = 2.

Now substitute for x in the first equation:

y = 8(2) - 9 = 7.

Check in the second equation:

y = 4x - 1

7 = 4(2) - 1 = 7.  Check is OK.

B. On the graph they will intersect at the point (2, 7).

They will intersect here because the values x=2 and y=7 satisfy both the 2 equations.

4 0
3 years ago
Gem and her three friends are going on a holiday.
mel-nik [20]

Answer:

£200

Step-by-step explanation:

4 friends - 4 tickets

They need to BUY 3 tickets.

3 tickets will cost £1200

Divide the £1200 between the 4 friends which is £300.

They will then get the other 1 ticket for free and have 4 altogether!

7 0
3 years ago
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The graph shows the depth, y, in meters, of a shark from the surface of an ocean for a certain amount of time, x, in minutes:
finlep [7]

Answer:

lo siento pero soy principiante

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Pleaseee helppppppppppppppppppp
quester [9]

To find Angle A we use cosine

cos ∅ = adjacent / hypotenuse

From the question

The adjacent is 17

The hypotenuse is 38

So we have

cos A = 17/38

A = cos-¹ 17/38

A = 63.4

<h3>A = 63° to the nearest degree</h3>

To find Angle C we use sine

sin ∅ = opposite / hypotenuse

From the question

The opposite is 17

The hypotenuse is 38

So we have

sin C = 17/38

C = sin-¹ 17/38

C = 26.57

<h3>C = 27° to the nearest degree</h3>

Hope this helps you

7 0
3 years ago
If an item that costs $45 sold for a 15% discount, how much do you spend on it? Commission is a % of sales.
Stells [14]

Answer:

You pay $38.25 after the discount is applied

Step-by-step explanation:

First take 15% of 45 by multiplying 45 by 0.15 (which is 15% as a decimal)

0.15 * 45 = 6.75

Subtract 6.75 from $45 and then you get $38.25!

Hope this helps! Good luck on your courses!

8 0
3 years ago
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