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3 years ago

1. Choose the answer that correctly expresses this ratio in fraction form.

Mathematics

1 answer:

Alborosie3 years ago

8 0

divide each number by 18

2:3

2/3

number 2:

25/50 divide each by 25

1/2

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What is the value of -4° + (5-2)(-6)?

34kurt

Answer:

-22

Step-by-step explanation:

Due to order of operations rules, we must perform the subtraction inside parentheses first, getting:

-4 +(3)(-6)

Multiplication comes next:

-4 - 18

and the total value is thus -22.

8 0

3 years ago

We choose a 4-digit number randomly. What is the probability that all its digits are even? help asap

Vlad1618 [11]

Answer:

It's very simple. In 4 decimal digits there are 10,000 (0000 to 9999) possible values. The odds of any one of them coming up randomly is one in 10,000. A specific "4 digit number" would have 1/9000 chance, since there are 9000 4 digit numbers (1000-9999).

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand

notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly = $\hat{p}=\dfrac{121}{1100}=0.11$

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

$P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]$

Hence, the probability that the sample proportion is more than 0.11 = 0.1457

3 0

3 years ago

Need help answering this

makkiz [27]

Answer:

add the 2 equations together

Step-by-step explanation:

i was in class when I heard this so it should be correct

5 0

3 years ago

On a homework assignment or in the study plan, you would click the Check Answer button to check

Illusion [34]

Is there a picture i could see?

6 0

2 years ago