MATHEMATICS HIGH SCHOOL

Graph the second equation to find the solution of the system of equations.y = –x,

y = 2x + 6

What is the point of intersection

Answers

Answer 1
Answer: Answer: (-2,2)

Explanation: I plugged it into a graphing calc!
Answer 2
Answer:

Answer:

So the point of intersection would be -x=2x+6

and then we'll subtract 2x on both sides and get -3x=6

this will result in x=-2

Then we'll substitute that into y=-x, so y=2

Therefore the point of intersection is (-2,2)

Hope I helped, have a nice day :)

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Algebra help please!A high-speed train travels 480 km from Paris to Grenoble, France, at an average speed of 180 km/h. How long will it take to reach Grenoble? A. 0.66 h B. 3.8 h C. 0.38 h D. 2.7 h
Estimate the value of the square root of 15.9÷3.8

Change the fraction to a decimal: 13/50

Answers

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Length of a rectangle is 2.5 cm and it’sarea is 12.5cm2. Ram found that the breadth of the rectangle is 5 cm while Rahim found that the breadth is 10 cm. Who is correct? Justify your answer.

Answers

Step-by-step explanation:

ram is true because when 2.5 is multiplied to .5 centimeters then answered becomes 12.5 centimeters square

Solve the following system:y = x + 3
2x + y = 9

(2, 5)
(5, 2)
(−2, 5)
(2, −5)

Answers

Hi,

y = x+3
2x+y = 9

2x+(x+3) = 9
2x+x+3 = 9
3x+3 = 9
3x = 9-3
3x = 6
x = 6/3
x = 2

y = x+3
y = 2+3
y = 5

Answer:

(x,y) = (2,5)
ahhh easy:) all we have to do is plug in y
sooo this question becomes 
2x + x + 3 = 9 
we add the xs and they become 3x
soooo
3x + 3 = 9 
now subtract 3 from both sides
3x +3 = 9 
     - 3 = -3 
they cancel out on the left hand side and the right side of the equal sign becomes a 6 
sooooo
3x = 6 
divide both sides by 3 
3x = 6 
÷3 = ÷ 3
the 3s on the left side cancel out
and the right side becomes 2
sooooo
x = 2 
but before we can answer this completely we plug it into our first equation
soooo
y = x + 3 
to this 
y = 2 + 3 
so y = 5
x = 2 
y = 5 
coordinates?
(2, 5)

22 kilometers is the same as how many miles?Hint: 1km≈0.6mi
Round your answer to the nearest tenth.

Answers

Because the problem says 1km≈0.6, in this case the answer would be 13.2 miles.
22 (km) x 0.6 (mi) = 13.2 miles

PLZ HELP URGENT!!!!!!!!!f(x) = -3x2 + 2x - 7


f(-1) =

A) -12
B) -8
C) -6
D) 0

Answers

Is that - 3x times 2?

Identify which equation represents a line parallel to the given equation 2x+5=25 asap please

Answers

Answer:

10

Step-by-step explanation:

2x(+5)=(25)< subtract 5 to each side

2x=20<divide 2 to 20

x=10
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