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Tems11 [23]
2 years ago
7

When I multiply 9x9 how would I go about counting by 9s?

Mathematics
1 answer:
11111nata11111 [884]2 years ago
5 0

Answer:

If you're looking for a shortcut, I usually find the number 1 less than what you are multiplying 9 by, this case 8, and then add a number that gets to 9.

So 9x6 would be:

5+4=9

54

Step-by-step explanation:

When multiplying by 9s the product's two numbers added together =9.

Sorry if this is confusing. Hope this helps though.

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Let a population consist of the values ​cigarettes, ​cigarettes, and cigarettes smoked in a day. Show that when samples of size
Katen [24]

The "sample" with "mean absolute deviation" indicate about a sample mean absolute deviation is being used as an estimator of the mean absolute deviation of a​ population

  • Mean of the sample MAD=3.3
  • Population MAD =6.4

<h3>What does this indicate about a sample mean absolute deviation used as an estimator of the mean absolute deviation of a​ population?</h3>

Generally,  The MAD measures the average dispersion around the mean of a given data collection.

1/n \sum_i-1^{n} |x_i -m(X)|

In conclusion, for the corresponding same to mean

the sample  mean absolute deviation

7,7  ↔         0

7,21  ↔         7

7,22         ↔    7.5

21,7        ↔          7

21,21 ↔     0

21,22 ↔    0.5

22,7   ↔     7.5

Therefore

  • Mean of the sample MAD=3.3
  • Population MAD =6.4

Read more about mean absolute deviation

brainly.com/question/10528201

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5 0
2 years ago
What is the axis of symmetry for f(x) = 2x2 − 4x + 5?
Romashka-Z-Leto [24]

Answer:

Axis of symmetry is

C) x = 1

Step-by-step explanation:

we are given equation as

2x^2 -4x+5

we can use axis of symmetry formula

Let's assume we are given quadratic equation as

y=ax^2+bx+c

Axis of symmetry is

x=-\frac{b}{2a}

now, we can compare both equations

and we get

a=2,b=-4

now, we can find axis of symmetry

x=-\frac{(-4)}{2\times 2}

x=-\frac{(-4)}{4}

x=1

5 0
3 years ago
Read 2 more answers
The measure of an angle is nine times the measure of its complement. find the measure of each angle.
andrew11 [14]
Two angles are complementary when they add up to 90 degrees<span> 

</span><span>smaller angle = x
</span><span>larger angle = 9x
</span>
x + 9x = 90
10x = 90
x = 90/10
x = 9°  ← smaller angle

larger angle = 9x = 9 * 9 = 81°

5 0
3 years ago
find two consecutive odd integers that 7 times the smaller integer is 61 more than 2 times the larger integer.
Aleks04 [339]

Answer:

x = 13     smaller integer

x + 2 = 15  the other integer

Step-by-step explanation:

x = the smaller integer

x + 2 = the next integer          

7(x) = 61 + 2(x + 2)

7x = 61 + 2x +4

5x = 61 + 4

5x  = 65

x = 13     smaller integer

x + 2 = 15  the other integer

8 0
2 years ago
Verbal expression for 3x^2
slega [8]
One expression could be three x to the power of two. Let me know if that's right :)
6 0
3 years ago
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