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2 years ago

What’s the slope of (-7,2) and (1,4)

Mathematics

1 answer:

mamaluj [8]2 years ago

8 0

Answer:

1/4

Step-by-step explanation:

Slope = (change in the y-values)/(change in the x-values)

Slope = (4 - 2)/(1 - (-7) )

Slope = (4 - 2)/(1 + 7)

Slope = 2/8

Slope = 1/4

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1.) (X+9)(x+3)

hodyreva [135]

$(x+9)(x+3)=x^2+3x+9x+27=x^2+12x+27\\\\
(y-5)(y^2-2y+6)=y^3-2y^2+6y-5y^2+10y-30=\\
=y^3-7y^2+16y-30$

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3 years ago

Justin cuts a 10-inch-long roll of cookie dough into 6 equal-length pieces. How many inches long is each piece of cookie dough?

mixas84 [53]

Answer: Each piece is 1 2/3 inch length.

Step-by-step explanation:

Total length of cookie dough =10-inch

Since it is being into divided into 6 equal-length pieces

We have that each piece will have=1 0-inch / 6 = 5/3 = 1 2/3 inch length.

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3 years ago

The cost of five books is 71 dollars what is the cost of each book

Sedbober [7]

Divide 71 and 5 to get a decimal since 71 does not end with 5 or 0. Do it to get 14 1/5 or 14.2

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3 years ago

Read 2 more answers

Please help! Show work!

Thepotemich [5.8K]

Answer:

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Step-by-step explanation:

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3 years ago

A recent survey found that 70% of all adults over 50 wear

lubasha [3.4K]

Answer:

There is an 84.97% probability that at least six wear glasses.

Step-by-step explanation:

For each adult over 50, there are only two possible outcomes. Either they wear glasses, or they do not. This means that we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinatios of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem we have that:

$n = 10, p = 0.7$

What is the probability that at least six wear glasses?

$P(X \geq 6) = P(X = 6) + `P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10) = 0.8497$

There is an 84.97% probability that at least six wear glasses.

5 0

3 years ago