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3 years ago

Tell me which number you doing so I know what one your doing

Mathematics

2 answers:

liubo4ka [24]3 years ago

6 0

Answer:

here you go

Step-by-step explanation:

1: equal to

2: the answer of two numbers added together is the sum

3: answer to a multiplication problem

Leviafan [203]3 years ago

6 0

Answer:

wanna be fri3nds and can i have brainliest please?

Step-by-step explanation:

You might be interested in

In a study of the population density of bullfrogs, 25 are captured and marked in the first sampling. Five days later, 30 frogs a

mojhsa [17]

Answer:

Step-by-step explanation:

Let x represent the number of bullfrogs in the population.

We have been given that in a study of the population density of bullfrogs, 25 are captured and marked in the first sampling. Five days later, 30 frogs are captured, 10 of which have marks.

We will use proportion to solve our given problem as:

$\frac{\text{Number of total bullfrogs}}{\text{Number of marked bullfrogs}}=\frac{30}{10}$

$\frac{x}{25}=\frac{30}{10}$

$\frac{x}{25}\cdot 25=\frac{30}{10}\cdot 25$

$x=3\cdot 25$

$x=75$

Therefore, the estimated number of bullfrogs in the population would be 75.

8 0

3 years ago

?????????????????????????

Mila [183]

77 percent is the correct answer

5 0

3 years ago

what would be the ratio of the number of cans to the price at Super Saver and Price Buster if a coupon for $1 off the total purc

DedPeter [7]

It depends how much the cans cost

8 0

3 years ago

A researcher studying reaction time of drivers states that, "A 95% confidence interval for the mean time (8.1) it takes for a dr

Sergio039 [100]

Answer:

For this case we know that the confidence interval is given by (1.2 , 1.8) and the point of estimate for $\mu$ would be:

$\bar X = \frac{1.2+1.8}{2}= 1.5$

And the margin of error is given by:

$ME = \frac{1.8-1.2}{2}= 0.3$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

For this case we know that the confidence interval is given by (1.2 , 1.8) and the point of estimate for $\mu$ would be:

$\bar X = \frac{1.2+1.8}{2}= 1.5$

And the margin of error is given by:

$ME = \frac{1.8-1.2}{2}= 0.3$

6 0

4 years ago

-8/9 - (2 1/3)<br> show all your work

Sauron [17]

Answer:

1 8/9 - 1 2/3 = 2/

≅ 0.2222222

Step-by-step explanation:

How do you solve fractions step by step?

Conversion a mixed number 1 8/

to a improper fraction: 1 8/9 = 1 8/

= 1 · 9 + 8/

= 9 + 8/

= 17/

To find a new numerator:

a) Multiply the whole number 1 by the denominator 9. Whole number 1 equally 1 * 9/

= 9/

b) Add the answer from previous step 9 to the numerator 8. New numerator is 9 + 8 = 17

c) Write a previous answer (new numerator 17) over the denominator 9.

One and eight ninths is seventeen ninths

Conversion a mixed number 1 2/

to a improper fraction: 1 2/3 = 1 2/

= 1 · 3 + 2/

= 3 + 2/

= 5/

To find a new numerator:

a) Multiply the whole number 1 by the denominator 3. Whole number 1 equally 1 * 3/

= 3/

b) Add the answer from previous step 3 to the numerator 2. New numerator is 3 + 2 = 5

c) Write a previous answer (new numerator 5) over the denominator 3.

One and two thirds is five thirds

Subtract: 17/

- 5/

= 17/

- 5 · 3/

3 · 3

= 17/

- 15/

= 17 - 15/

= 2/

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(9, 3) = 9. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 9 × 3 = 27. In the following intermediate step, it cannot further simplify the fraction result by canceling.

In other words - seventeen ninths minus five thirds = two ninths

8 0

3 years ago