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2 years ago

What is the product of 45 and 23

Mathematics

2 answers:

Andrei [34K]2 years ago

6 0

Answer:

1035

Step-by-step explanation:

The result of multiplying 45 with 23 is called the product. Thus, the product of 45 and 23 is as follows:

1035

To find any product in the future on your own, just remember that the product is the answer you get when you multiply numbers together.

[RevyBreeze]

nexus9112 [7]2 years ago

4 0

Product means multiplication so 45 x 23 = 1035

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A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a pers

tino4ka555 [31]

Answer:

19 situps

Step-by-step explanation:

Given that the regression equation to find a a relationship between hours of TV watched per day (x) and number of situps a person can do (y) was done.

The result was

y = ax+b

$y = -1.23x+22.738\\$

Correlation coefficient = 0.865

To predict the number of situps a person who watches 3 hours of TV

y = -1.23(3)+22.738

= 19.048

Approximately 19 situps.

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2 years ago

Question 4 of 10

VARVARA [1.3K]

Answer:

A. x=3

Step-by-step explanation:

4(5x+3)=14x+30

multiply 4 to 5x and multiply 4 yo 3

20x+12=14x+30

move terms

20x-14x=30-12

subtract 20x to 14x and subtract 30 to 12

6x=18

divide both sides by 8

x=3

5 0

2 years ago

You take two steps every hour how long would it take to walk 20 miles

neonofarm [45]

Answer:

21120 hours long

Step-by-step explanation:

42240=20 miles

42240/2=21120h

6 0

2 years ago

Read 2 more answers

The price of a computer was decreased by 7% to £500. What was the price before the decrease? Give your answer to the nearest pen

makkiz [27]

Answer:

£ 537.63

Step-by-step explanation:

original price = 100%

selling price = 100% - 7% = 93% = £500

just do the proportion or ratio

$\frac{100\%}{93\%} = \frac{original \: price}{500}$

OP = 500 x 100% / 93%

OP = £ 537.634

rounded to the nearest penny and become £ 537.63

5 0

2 years ago

Given the sample 4, −2, −6, 19, 6, add one more sample value that will neither change the mean nor the variance. Round to two de

DedPeter [7]

Answer:

Cannot create sample

Step-by-step explanation:

We are given the following in the question:

4, -2, -6, 19, 6

Formula:

$\text{Variance} = \displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{21}{5} = 4.2$

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 = 364.8

$s^2 = \dfrac{364.8}{4}} = 91.2$

If we add an observation equal to the mean of given sample, then the mean and of new sample will not change.

New sample:

4, -2, -6, 19, 6, 4.2

$Mean =\displaystyle\frac{25.2}{6} = 4.2$

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 + 0 = 364.8

$s^2 = \dfrac{364.8}{5}} = 72.96$

Thus, the variance of new sample changes.

Thus, it is not possible to create a sample.

5 0

3 years ago