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Setler [38]
3 years ago
6

Ken’s predicted temperature for April is 7ºC. His prediction for May is 2ºC higher than April. He used the number line to solve

the problem, starting at 0, moving right to 7, and then moving 2 units to the left. Explain Ken’s error
Mathematics
2 answers:
liq [111]3 years ago
8 0

Answer:

Ken’s error was showing a decrease in temperature by moving 2 units left on the number line. He should have moved 2 units right to represent an increase in temperature of 2°C.

Step-by-step explanation:

fredd [130]3 years ago
4 0

Answer:

He should have moved 2 units right, not left.

Step-by-step explanation:

Left means it gets colder where as right means the temperature increases

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LUCKY_DIMON [66]

Since the focus is at (0, 2) and directrix is y = -2

point where both of these have the same x-value will be at (0, 2) for the focus and (0, -2) for the directrix.

The vertex will also have the same x-value so it will be (0, y).

y-value is half-way between the y-value of the focus, and the y-value of the directrix at x = 0.

Directrix y-value is -2 at x = 0 and for the focus it's 2 at x = 0. 

Halfway between y = -2 and y = 2 is y = 0. 

So the vertex of the parabola occurs at (0, 0). 

So that's x^2 = 4ay = 4(2)y = 8y. 

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hope it helps

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4 years ago
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Answer:

Find the LCD of the terms in the equation. x

Multiply each term by x and simplify.

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Step-by-step explanation:

3 0
3 years ago
On a very hot summer day, 5% of the production employees at Midwest Auto Works are absent from work. The production employees ar
olga2289 [7]

Answer:

1.05% probability of randomly selecting 10 production employees on a hot summer day and finding that three of them are absent

Step-by-step explanation:

For each employee, there are only two possible outcomes. Either they are absent, or they are not. The probability of an employee being absent is independent of other employees. 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.

5% of the production employees at Midwest Auto Works are absent from work.

This means that p = 0.05

What is the probability of randomly selecting 10 production employees on a hot summer day and finding that three of them are absent

This is P(X = 3) when n = 10.

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

P(X = 3) = C_{10,3}.(0.05)^{3}.(0.95)^{7} = 0.0105

1.05% probability of randomly selecting 10 production employees on a hot summer day and finding that three of them are absent

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3 years ago
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3/4 x 7 =5 and 1/4 cup
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6 0
4 years ago
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