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3 years ago

Which statements are true about the ordered pair (10, 5) and the system of equations? {2x-5y=-5 x+2y=11

Mathematics

2 answers:

alisha [4.7K]3 years ago

7 0

Your answer is going to be C

kaheart [24]3 years ago

6 0

C because if you plug in x and y for both equations, you get -5 for first one, and the second equation is not equal to -5.

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The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wh

solong [7]

Answer:

a) $- \frac{1}{19}$

b) SD(x) = 0.9986

Step-by-step explanation:

Given data:

Number of slots 38

slots for red ball 18

slots for black = 18

slots for green 2

outcomes Red Black or Green

Profit 1 -1

P(X) 18/38 20/38

Expected value of wining,

$E(x) = 1. \frac{18}{38} + (-1) \frac{20}{38} = - \frac{2}{38} = - \frac{1}{19}$

B) Standard deviation of winning SD(x)

$SD(x) = \sqrt{(1- (-\frac{1}{19})^2 .\frac{18}{38} + (1- (-\frac{1}{19})^2 .\frac{20}{38}}$

$SD(x) = \sqrt{\frac{360}{361}$

SD(x) = 0.9986

3 0

3 years ago

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.

lianna [129]

Answer:

as 18/5 =3.6

so we need minimum 4 bags of chips

3 0

3 years ago

Construct a residual plot of the amount of money in a person’s bank account and their age that would indicate a linear model.

stepladder [879]

Answer:

The regression line is not a good model because there is a pattern in the residual plot.

Step-by-step explanation:

Given is a residual plot for a data set

The residual plot shows scatter plot of x and y

The plotting of points show that there is not likely to be a linear trend of relation between the two variables. It is more likely to be parabolic or exponential.

Hence the regression line cannot be a good model as they do not approach 0.

Also there is not a pattern of linear trend.

D) The regression line is not a good model because there is a pattern in the residual plot.

3 0

3 years ago

The cost of providing water bottles at a high school football game is $35 for the rental of the coolers and $0.50 per bottle

zloy xaker [14]

The cost function is an illustration of a linear function

The equation of the cost function is C(x) = 35 + 0.5x

The given parameters are:

$Rentals = 35$ -- the cost of renting a cooler

$Rate = 0.5$ --- the rate per bottle

Assume the number of bottles in a cooler is x.

The cost function for the bottles in a cooler would be:

$C(x) = Rentals + Rate \times x$

So, we have:

$C(x) = 35 + 0.5\times x$

Evaluate the products

$C(x) = 35 + 0.5x$

Hence, the equation is $C(x) = 35 + 0.5x$

Read more about linear functions at:

brainly.com/question/15602982

7 0

2 years ago

Write the equation of the line (in point-slope form) that passes through the point (3, -4) and has a slope of 6.

rosijanka [135]

Answer:

y+4=6(x-3)

Step-by-step explanation:

y-y1=m(x-x1)

y-(-4)=6(x-3)

y+4=6(x-3)

8 0

4 years ago