3 years ago

I needs hheeellllppppp

Mathematics

1 answer:

Step2247 [10]3 years ago

5 0

Answer:

It's C.7

Step-by-step explanation:

Use the foil method

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^please help^

masha68 [24]

I'm pretty sure it's 27.9m

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3 years ago

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Which of the following statements is false? (N = natural numbers) Ø N {0} N {1} N

Iteru [2.4K]

Assuming each statement is claiming the first set is a subset of N, the second statement is false. 0 is not part of the natural numbers.

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Solving for a Confidence Interval: Algebra 2 points possible (graded) In the problems on this page, we will continue building th

baherus [9]

Answer:

Step-by-step explanation:

1) The given inequality is

$|\sqrt{n} \frac{(\bar R_n-p)}{\sqrt{p(1-p)} } |$

$\to n( \bar R _n - p)^2$

$\to n\bar R +np^2-2nR_np$

Arranging the terms with p² and p, we get

$p^2(n+q^2_{\alpha /2)-p(2n \bar R _n+q^2_{\alpha / 2})+n \bar R ^2 _n$

Hence, the inequality is of the form

Ap² + Bp + c < 0

2. A quadratic equation of the form

Ap² + Bp + c < 0 with A > 0 looks like

Check the attached image

The region where the values are negative lies between p₁ and p₂ ...

The p₁ < p < p₂

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3 years ago

What is the speed of a bicycle that travels a total distance of 9 miles in 45 minutes

Alexxx [7]

Answer:

5 mph

Step-by-step explanation:

I hope this helps

I just divided 45/9

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3 years ago

Which point represents the solution to the system

Alborosie

Answer:

Step-by-step explanation:

$3x - 2y = 12 \\ 2x + 2y = 3 \\ 2y = 3 - 2x \\ 3x - (3 - 2x) = 12 \\ 3x - 3 + 2x = 12 \\ 5x = 15 \\ x = 3 \\ 2y = 3 - 6 = - 3 \\ y = - \frac{3}{2}$

(3, -3/2)

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3 years ago