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3 years ago

SOMEONE ANSWER PLEASE PLEASE

Mathematics

1 answer:

Gnom [1K]3 years ago

3 0

Answer:

See explanation below.

Step-by-step explanation:

Let's say,

x = number of tokens required to play one game of ping pong

y = number of token required play one game of pinball

Using the data given, the system of equations are:

$\begin{bmatrix}9x+5y=29\\ 3x+y=7\end{bmatrix}$

Solving the system of equations using substitution method will give us:

$y=4\:\:\:,\:\:\:x=1$

So, one game of ping pong required 1 token, whereas one game of pinball required 4 tokens.

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Mekhanik [1.2K]

Answer:

Step-by-step explanation:

Perpendicular lines are lines whose slopes are negative reciprocals of each other

To find the slope of the line we are given, we can rearrange the equation

$4x - 5y = 4\\4x - 4 = 5y\\y = \frac{4}{5}(x) - \frac{4}{5}$

The slope of this line is $\frac{4}{5}$ , so the slope of the other line is $\frac{-5}{4}$

next, we can use the given point to find the equation $y = mx +b$

we know m, we can solve for b

$y = \frac{-5}{4}(x) + b\\-3 = \frac{-5}{4}(-2) + b\\-3 = \frac{5}{2} + b\\\frac{-6}{2} = \frac{5}{2} + b\\$

$b = \frac{-11}{2}$

$so,\\y = \frac{-5}{4}(x) - \frac{11}{2}$

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3 years ago

Elena finds that the area of a house on a scale drawing is 25 square inches the actual area of the house is 2025 ft what is the

ElenaW [278]

Answer:

81 is the scale of drawing.

Step-by-step explanation:

Area of the house in drawing = A =

Let the factor by which scaling is present in the drawing be s.

Area of the house in reality = A' =

8 0

3 years ago

Please help me with this MATH question.

andrey2020 [161]

Answer:

y=4

Step-by-step explanation:

84=30y-9y, first you collect like terms.

84=21y, swap the sides

21y=84, devide both sides and you get y =4

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3 years ago

How do you convert 15x + 17y = 17 into slope intercept form?

Daniel [21]

Answer:

y = -15/17x + 1

Step-by-step explanation:

15x + 17y = 17

17y = 17 - 15x

y = 1 - 15/17x

y = -15/17x + 1

8 0

3 years ago

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Given f'(x) = (1 − x)(4 − x), determine the intervals on which f(x) is increasing or decreasing.

Sophie [7]

The critical points are at x = 1 and x = 4 giving you the intervals (-inf, 1), (1, 4) and (4, inf).

By substituting x values in these 3 intervals, you can see that f'(x) is positive in the first and third intervals and negative in the second interval.

This means that f(x) is increasing in the first and third intervals and decreasing in the second interval.

The answer is D.

8 0

3 years ago

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