3 years ago

What does it mean when ph is slightly acidic?

Mathematics

1 answer:

Nutka1998 [239]3 years ago

8 0

D. Slightly acidic is 5.0 to 5.5

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Can someone help me?

Rasek [7]

Step-by-step explanation:

$given \: - 5n = 4m$

making m the subject first by dividing through by 4

$\frac{ - 5}{n} = \frac{4m}{4}$

$m = \frac{ - 5n}{4}$

from the question, given n = -1 ,0 ,1

so when n= -1

$m = \frac{ - 5( - 1)}{4}$

$m = \frac{5}{4}$

when n=0

$m = \frac{ - 5(0)}{4}$

$m = \frac{0}{4}$

$m = 0$

when n=1

$m = \frac{ - 5(1)}{4}$

$m = \frac{ - 5}{4}$

3 0

3 years ago

How do i solve this equation? and could you show it to me step by step?

ipn [44]

The answer is 8 and yea it’s 2 steps first u have to remove the constant so u subtract 74-2=72 and 2-2=0. After u get rid of the constant u divide both sides by 9 basically 72/9 and 9/9 which is 8. So n is equal to 8 I hope this helped. I know it can be confusing

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3 years ago

What are the side lengths of a rectangle that has 8 square units and a perimeter of 12 units

telo118 [61]

The longest two sides will be 4 each and the shortest two sides will be 2 each

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3 years ago

There are 3 boys to every 5 girls in mrs. kennedy's class. if there are 40 students in the class, how many of those students are

Gala2k [10]

Ratio of girls to boys = 5/3

Number of girls in 40 students would be 3/5 * 40 = 24

4 0