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Pepsi [2]
2 years ago
5

How you you factor this expression?

Mathematics
1 answer:
ioda2 years ago
4 0
You have to use factoring by grouping.. multiply by 8 and 15 and what factors add to -14.

The factors are 6 and -20

(2x-5)(4x+3)
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What is 7 and 1/2 minus 3/4
Sliva [168]

Answer:

here's your answer in the given picture

8 0
2 years ago
The following histogram presents the amounts of silver (in parts per million) found in a sample of rocks. One rectangle from the
gladu [14]

Answer:

  • <u><em>The height of the missing rectangle is 0.15</em></u>

Explanation:

The image attached has the mentioned <em>histogram</em>.

Such histogram presents the relative frequencies for the clases [0,1], [1,2],[2,3], [4,5], and [5,6] Silver in ppm.

Only the rectangle for the class [3,4] is missing.

The height of each rectangle is the relative frequency of the corresponding class.

The relative frequencies must add 1, because each relative frequency is calculated dividing the absolute class frequency by the total number in the sample; hence, the sum of all the relative frequencies is equal to the total absolute class frequencies divided by the same number, yielding 1.

In consequence, you can sum all the known relative frequencies and subtract from 1 to get the missing relative frequency, which is the height of the missing rectangle.

<u>1. Sum of the known relative frequencies</u>:

  • 0.2 + 0.3 + 0.15 + 0.1 + 0.1 = 0.85

<u>2. Missing frequency</u>:

  • 1 - 0.85 = 0.15

<u>3. Conclusion</u>:

  • The height of the missing rectangle is 0.15

4 0
3 years ago
Jon paid $20 towards the cost of an $80 sweater. Write a numeric equation to show how much he still owes on the sweater.
Tju [1.3M]

Answer:

$80 - $20 = $60 left.

Step-by-step explanation:

8 0
3 years ago
V62 is between what pair of consecutive integers?<br> 10 and 11<br> 8 and 9<br> 7 and 8<br> 6 and 7
pishuonlain [190]

Answer:

7 & 8.

Step-by-step explanation:

√62 = 7.87400787401.

4 0
3 years ago
The sum of a number and twice its reciprocal is 27/5. Find<br>the number.​
vovangra [49]

Answer:

x  , reciprocal= 1/x  

x+2(1/x)=27/5  

x+2/x=27/5  

x^2+2=27/5*x  

x^2-27/5*x+2=0  

(x-5)(x-2/5)=0  

<u><em>x=5, 2/5</em></u>

<u><em></em></u>

6 0
3 years ago
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