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Hitman42 [59]
3 years ago
13

Y = 2x - 15 y = 5x solve using systems of equations

Mathematics
2 answers:
Pie3 years ago
7 0

Answer:

Step-by-step explanation:

Since the solution will occur when y=y

2x-15=5x

-3x-15=0

-3x=15

x=-5, using this in y=5x

y=5(-5)

y=-25 so the solution is the point

(-5, -25)

sukhopar [10]3 years ago
3 0

Answer:

The answer will be (-5,-25) or x= -5 and y=-25

Step-by-step explanation:

Hope this helped

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The graph of the function showing the path of a soccer ball thrown by a goalie in a video game, f(x) = –0.05x2 + 2.5x + 5.2, is
Tju [1.3M]

Answer:

The correct option is 4.

Step-by-step explanation:

The given function is

f(x)=-0.05x^2+2.5x+5.2

Where f(x) is height of the ball and x is the distance.

It is a polynomial function with degree 2. All polynomial functions are defined for all real numbers, therefore the mathematical domain of the function is all real numbers.

-\infty

Factorize the given function.

f(x)=-0.05(x^2-50x-104)

f(x)=-0.05(x^2-50x-104)

f(x)=-0.05(x^2-52x+2x-104)

f(x)=-0.05(x(x-52)+2(x-52))

f(x) = -0.05 (x - 52) (x + 2)

Put f(x)=0 to find the x intercepts.

0 = -0.05 (x - 52) (x + 2)

Equate each factor equal to 0.

x=52,-2

Therefore at x=52 and -2, the graph of f(x) intersects x-axis. Before x=-2 and after x=52 the values of f(x) is negative. Height cannot be negative, therefore reasonable domain is lie between -2 to 52.

Distance cannot be negative, therefore the reasonable domain must be positive.

0\leq x\leq 52

Therefore the reasonable domain is 0\leq x\leq 52 and option 4 is correct.

6 0
3 years ago
NEED HELP ASAP!!!!!!!!!!!!!!!!
salantis [7]

9514 1404 393

Answer:

  (b) (-5, 1)

  (c) (5, -7)

  (d) (9, -2)

Step-by-step explanation:

The coordinate differences between the given points are ...

  (4, 2) -(0, -3) = (4, 5)

The length of the line segment between the points is √(4² +5²) = √41, so this is the side of the square, not a diagonal.

The other four points that could be corners of the square are these same distances, but at right angles. To get points at right angles, the distance values can be swapped, and one of them negated.

Two of the points could be ...

  (4, 2) ± (5, -4) = (9, -2) or (-1, 6)

and the other two could be ...

  (0, -3) ± (5, -4) = (5, -7) or (-5, 1)

5 0
3 years ago
- 3x + 4 and passes through the point (2,5)
Anuta_ua [19.1K]

Answer:

y=(x+13)/3

Step-by-step explanation:

the question is not quite clear, i think u mean y= -3x + 4

then, the slope of the line perpendicular to the given line is m1.m2= -1, hence, -3.m2= -1 m2 = 1/3

y-5=1/3(x-2) y=x/3+13/3 or y=(x+13)/3

6 0
3 years ago
A student used his place value chart to show a number. After the teacher instructed him to divide his number by 100,the chart sh
NeX [460]

When you divide by 100 you are essentially moving the decimal of the number two places to the left. In undoing this you would have to move the decimal of the number two places to the right.

28.003 would then turn into 2,800.3

Unfortunately I cannot draw a chart on here but that is the best I can do.

5 0
3 years ago
Read 2 more answers
Use a unit rate to find the unknown value.
Tanzania [10]
1. 40/8 = 45/9
2. 42/14 = 15/5
3. 14/2 = 56/8
4. 8/4 = 26/13
3 0
3 years ago
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