1. Which is an equation of the line with slope 4 and a y-intercept -3? Ay = -3x + 4 By = -3x + + C y = 4x -3 D y = 4x 3 4

Which of the following statements are correct? select all that apply

stepan [7]

Answer:

sorry, but you need to show the selectings

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

How to solve 7(4×1/2)+3(5×1/3)+2(-3×1/2

kipiarov [429]

Multiple: 4 * 1 /2 = 4 · 1 = 4 /2 = 2 · 2

1 · 2 1 · 2 = 2

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(4, 2) = 2

Multiple: 7 * 2 = 14

Multiple: 5 * 1 /3 = 5 · 1

1 · 3 = 5 /3

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(5, 3) = 1

Multiple: 3 * 5 /3 = 3 · 5

1 · 3 = 15 /3 = 5 · 3

1 · 3 = 5

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(15, 3) = 3

Add: 14 + 5 = 19

Multiple: -3 * 1 /2 = -3 · 1

1 · 2 = -3 /2 = -1.5 · 2

1 · 2

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(-3, 2) = 2

Multiple: 1/2 * (-3 /2 ) = 2 · (-3)

1 · 2 = -6 /2 = -3 · 2

1 · 2 = -3

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(-6, 2) = 2

Add: 19 + (-3) = 16

7(4×1/2) + 3(5×1/3) + 2(-3×1/2) = 16 /1 = 16

6 0

4 years ago

Sally has a box that has 30 red balloons and 60 total balloons. What is the probability a randomly selected one is red?

Andreyy89

1/2 probability because 30 is half of 60.

6 0

4 years ago

3.30 Survey response rate. Pew Research reported in 2012 that the typical response rate to their surveys is only 9%. If for a pa

Artist 52 [7]

Answer:

0% probability that at least 1,500 will agree to respond

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .