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3 years ago

(65+ (1/5 times 5) +6) divided by 9

Mathematics

2 answers:

Pepsi [2]3 years ago

4 0

Multiply 1/5×5= 5/5---1 whole

Next--> Add 65+6+1= 72

72÷9= 8

sergij07 [2.7K]3 years ago

3 0

Answer:

8, hope this helps

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In triangle ABC angle C 105° B 45° BD median of triangle ABC find the angle bdc

antiseptic1488 [7]

Answer:

Step-by-step explanation:

$105 + 45 + bdc = 180$

bdc=30

8 0

1 year ago

The ages of registered voters in Smith County are normally distributed with a population standard deviation of 3 years and an un

eimsori [14]

Answer:

The margin of of error for a 95% confidence interval for the population mean is of 1.39 years.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Population standard deviation of 3 years

This means that $\sigma = 3$

Sample of 18 voters

This means that $n = 18$

Margin of error:

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.96\frac{3}{\sqrt{18}}$

$M = 1.39$

The margin of of error for a 95% confidence interval for the population mean is of 1.39 years.

3 0

3 years ago

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Mazyrski [523]

Answer:

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7 0

3 years ago

How to do quadratic graphs

stealth61 [152]

Answer:

To graph a quadratic equation, start by solving for h in vertex form, or taking -b divided by 2 times a in standard form. Then, define or calculate the value of k and plot the point (h, k), which is the vertex of your parabola.

Step-by-step explanation:

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4 years ago

Which function has a domain of (-1, ∞) and a range of (-∞, ∞)?

Vaselesa [24]

The two essential characteristics of functions are domain and range. Function has a domain of (-1, ∞) and a range of (-∞, ∞), f(x) = log₂x - 1.

<h3>What is domain and range?</h3>

Mathematical procedures are comparable to those of a soda vending machine. You can choose from a variety of sodas after you deposit a particular sum of money. Similar to how we enter different numbers into functions, we also receive new numbers as the outcome. The two essential characteristics of functions are domain and range.

A soda can be purchased using quarters and one dollar bills. If pennies are put into the machine, no soda flavor will be provided. As a result, domain depicts the possible inputs, which are quarters and one-dollar bills. No matter how much you pay, a Coke machine won't give you a cheeseburger. As a result, range refers to potential outputs, or in this case, soda tastes in machine. Let's discover how to graph and determine domain and range of a given function.

To know more about domain visit: brainly.com/question/28135761

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4 0

1 year ago