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Mariana [72]
3 years ago
14

Appropriate Inverse Operation

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
5 0
Multiplying both sides of the equation by 3 and substituting 4 for p
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Find the sum of the following without actually adding: 1+3+5+7+9+11+13+15
I am Lyosha [343]

use this formula Sn=n/2[2a+(n-1)d]

here,d=a2-a1 and n= no. Of terms

Step-by-step explanation:

S8=8/2[2(1)+(8-1)2]

S8=64

6 0
3 years ago
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A number N is greater than 3. Which of the following best represents the location of 3N
Nesterboy [21]

Answer:

The second number line represent the location of 3N values.

Step-by-step explanation:

The first number line represent the inequality <em>N</em> > 3.

Now, the new number is 3<em>N</em>.

Consider the second number line values:

3N = {12, 15, 18, 21, ....}

The second number line represent the location of 3N values.

5 0
3 years ago
Yu Xing paid 3.60 dollar for 2 pens after a 10 percent discount .What was the usual price of 1 pen.
notka56 [123]

Answer:

2 $

Step-by-step explanation:

let the original price be x

price after 10% discount = 3.60$

x -  \frac{10}{100} \times x = 3.60

\frac{100x - 10x}{100}  = 3.60 \\  \frac{90x}{100}  = 3.60 \\ 9x = 36 \\ x = 4

The original price of 2 pens is 4$

original price of one pen = 4/ 2

<u>= 2 $</u>

8 0
2 years ago
Find the interior angle sum for the following polygon
Brrunno [24]

Answer:

Polygon Name  

Number of Interior Angles  

Sum of Interior Angles = (n-2) x 180°  

Triangle  

3  

180°  

Quadrilateral  

4  

360°  

<u><em> Pentagon  </em></u>

<u><em> 5  </em></u>

<u><em> 540°  </em></u>

Hexagon  

6  

720°

Step-by-step explanation:

4 0
3 years ago
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72 is 75 percent of what number
aniked [119]
Its ans will become 96
3 0
3 years ago
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