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3 years ago

4/5+ unknown number =14/15

Mathematics

2 answers:

prohojiy [21]3 years ago

5 0

Answer:

The unknown number is 2/15.

Step-by-step explanation:

4/5+x=14/15

x=14/15-4/5

x=14/15-12/15

x=2/15

VLD [36.1K]3 years ago

3 0

Answer: x = 2/15

Step-by-step explanation:

Let the unknown number be x

4 /5 + x = 14/15

Make x the subject of the equation by subtracting 4/5 from both sides

x = 14/15 - 4/5

The denominator is 15, therefore

x= 14 -12/15 = 2/15

x = 2/15

I hope this is clear, please mark as brainliest answer.

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Which property of addition does 8 + 0 = 0

cluponka [151]

This property of addition is the Identity Property. The identity property states that any number added to 0 will equal to the original number.

Hope this helped☺☺

6 0

3 years ago

The number of hours, t, that bacteria spread 10-fold can be modeled by the equation B(t) = B0(10)2t. There are 25 bacteria prese

nordsb [41]

Answer: 1.67 hours.

Explanation:

1) Function that models the number of bacteria:

$B(t)=B_0(10)^{2t}$

2) Bo = 25, then the function is:

$B_0=25(10)^{2t}$

3) To know how many hours will elpase until the number of bactaria is 55,00, you equals B to 55,500 in the equation and solve for t, in this way:

i) start

$55000=25(10)^{2t)$

ii) division property

$2200=10^{2t}$

iii) antilogarithm property

$2t = log_{10}2200$

iv) division property

$t=\frac{log_{10}2200}{2}$

v) Due the operations:

t = 1.67 hours.

Note that the time is less than 2 hours. That sounds fine since after 1 hour there will be 10 times 25 (250 bacteria), and after 2 hours 100 times 25 (2500 bacteria).

3 0

3 years ago

Claire has 35 pages left to read in her book. She wants to read an equal number of pages over next 6 days and finish the book. H

densk [106]

The number of pages which Claire should read each day to finish the 35 pages in 6 days is; 5.833 pages per day.

<h3>How many pages should Claire read per day?</h3>

It follows from the task content that the number of pages which Claire should read per day in a bid to finish all 35 pages in 6 days be determined.

Since the given condition is such that; Claire reads an equal number of pages on each of the next six days.

It follows that the number of pages to be read each day is given by;

35 / 6

= 5.833 pages per day.

Ultimately, the number of pages Claire should read per day over the next 6 days is; 5.833 pages per day.