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3 years ago

How do you determine if a slope is positive or negative?

2 answers:

3 0

<span>As you look at the graph from left to right (increasing x), if the line is going up(increasing y), slope is positive.

.
If it's going down (decreasing y), slope is negative.
</span>

tangare [24]3 years ago

3 0

If the slope in the graph is positive, the line starts from bottom left towards the top right.
If the slope in the graph is negative, the line starts from the upper left to the bottom right.

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At a bike shop, Kirby is buying a new bike that costs

mart [117]

Answer:

tax: $18.9

total cost: $333.9

Step-by-step explanation:

$315 × 0.06 = 18.9

18.9 + 315 = 333.9

btw you can also do "315 × 1.06" to get the total cost without having to manually add the tax

3 0

2 years ago

The National Center for Health Statistics (NCHS) reports that 70%70% of U.S. adults aged 6565 and over have ever received a pneu

Marianna [84]

Answer:

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they received a pneumococcal vaccination, or they did not. The probability of an adult receiving a pneumococcal vaccination is independent of other adults. So we use the binomial probability distribution to solve this question.

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 combinations 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.

70% of U.S. adults aged 65 and over have ever received a pneumococcal vaccination.

This means that $p = 0.7$

20 adults

This means that $n = 20$

Determine the probability that exactly 12 members of the sample received a pneumococcal vaccination.

This is P(X = 12).

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

$P(X = 12) = C_{20,12}.(0.7)^{12}.(0.3)^{8} = 0.1144$

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

3 0

2 years ago

At a putt putt course there are 50 yellow golf balls, 45 red golf balls, and 65 blue golf balls. What ratio compares the number

oksian1 [2.3K]

Blue balls : Total number.

Total number of balls = 50 + 45 + 65 = 160

Blue balls : Total number.

= 65: 160 Divide both by 5.
= 13 : 32

= 13/32. That is the ratio.

6 0

2 years ago

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Dima020 [189]

Answer:

Step-by-step explanation:

y=3x+3, y=6x-6

6x-6=3x+3

3x=9

x=3

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2 years ago

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aivan3 [116]

Answer:

Step-by-step explanation:

If Sean wants to but both the muffin and cookie then this addition. 3 +m shows the correct expression. the answer is b

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3 years ago