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3 years ago

11. Solve the system of Equations

Mathematics

1 answer:

valkas [14]3 years ago

4 0

Answer:

(x,y)= (-4,1)

Step-by-step explanation:

sub the given value of x into the equation -3x+7y=19

solve for y

sub the given value of y into the equation

THIS IS FOR SUBSTITUTION METHOD

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You can buy 2 tickets to school carnival for $9 total.<br> How many tickets can you buy for $27?

kodGreya [7K]

Answer:

Step-by-step explanation:

pls brainliest

9/2=4.5

27/4.5=6

3 0

3 years ago

What is the distance between the points (59.5, 34.2) and (15.3, 14.9)? Enter your answer rounded to the nearest tenth (0.1).

nirvana33 [79]

Answer:

48.2

Step-by-step explanation:

√(x2-x1)²+(y2-y1)²

√(15.3-59.5)² +(14.9-34.2)²

√(-44.2)² + (-19.3)²

√1953.64+372.49

√2326.13

48.2

5 0

2 years ago

Read 2 more answers

URGENT PLEASE HELP ME, ITS DUE IN A HOUR

Olegator [25]

Answer:

Area of gray region = $8x^2+8x-7$

Step-by-step explanation:

The area covered by the furniture can be subtracted from the total area of the room to calculate the area of the gray region.

<em>Total</em> area of the room: $13x^2+7x-2$

Area taken up by furniture: $5x^2-x+5$

Area of gray region = total area of the room - area taken up by furniture

Area of gray region = $13x^2+7x-2-(5x^2-x+5)$

Remember to distribute the negative sign:

Area of gray region = $13x^2+7x-2-5x^2+x-5$

Combine like terms:

Area of gray region = $8x^2+8x-7$

7 0

3 years ago

Read 2 more answers

Help me I need the answer to #2 and #4

Karo-lina-s [1.5K]

Number 2 is 84.13
number 4 is 56

3 0

3 years ago

An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the ref

Deffense [45]

To minimize the cost, we take the straight distance from the refinery to the other side of the river as 2 km. Also, the 7 km will be the distance that has to be traveled by the pipeline in land. The total cost, C, is therefore,
total cost = (2 km)($800,000/km) + (7 km)($400,000 /km)
total cost = $4,400,000
Thus, the total cost of the pipeline is approximately $4,400,000.00.

4 0

4 years ago