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AnnZ [28]
3 years ago
13

Which of the following correctly shows the re-grouping for 45 x 12? Group of answer choices 40 x 10; 5 x 10; 40 x 2; 5 x 40

Mathematics
1 answer:
Damm [24]3 years ago
5 0

Answer:

40x10;5x10;40x2;5x2

400+50+80+10

=540

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Decompose 49 x 5 to<br> make it easier below<br> Explain
Andreyy89

Answer:

go by 5's

Step-by-step explanation:

5

5

5

5

and so on.

5 0
4 years ago
Read 2 more answers
During a​ sale, a dress is marked down from a selling price of ​$ to a sale price of ​$. What is the percent​ markdown?
ElenaW [278]

Complete question :

35%

Answer:

Step-by-step explanation:

Selling price = $68

Markdown price = $44.20

Percentage markdown :

Markdown / selling price * 100%

((68 - 44.20) / 68) * 100%

(23.8 / 68) * 100%

0.35 * 100%

= 35%

6 0
3 years ago
Your start-up business is looking into the energy usage in the community of south lawndale. your sample size is 12 months. use t
Aleonysh [2.5K]

The confidence interval at 95% level is

7106.87 <  μ< 14255.27

<h3>What is meant be mean and standard deviation?</h3>

The ratio of sum of observations to the total number of observation is known as mean. It is one of the central tendency in the statistics. It gives an idea about the central value present in the data. The most sensitive measure of central tendency is mean. It is very easy to calculate. Mean playa a crucial role in daily life. The two types of means are Arithmetic mean and Geometric mean.

Standard deviation is a measure in the statistics. The amount of variation of a set of values is known as standard deviation. Standard deviation is denoted by σ.

As per given data

90% confident level for amount of electricity used in community of Austin is

X-tx/2(n-1)s/√n < μ < X+ tx/2(n-1)s/√n

Here , n=12 ,  X=10681.07 , s=6893.87

Margin of error = tx/2(n-1)s/√n

=(1.796×6893.87)/√12

=3574.1996

=3574.19(approximately)

Therefore, 90% CI is,

10681.07-3574.19 ≤ μ<10681.07+3574.19

7106.87 <  μ< 14255.27

To know more about mean and standard deviation, visit:

brainly.com/question/14720855

#SPJ4

5 0
1 year ago
Negative five divided by 5/7
Marrrta [24]

Answer:

-7

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which line is parallel to y=3x-1?
aliya0001 [1]

Answer:

any line can be parallel to that as long as the y-intercepts are different and they contain the same slope which in this case, is 3.

Step-by-step explanation:

an example would be y = 3x + 4

6 0
3 years ago
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