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svlad2 [7]
3 years ago
11

URGENT !!!

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

{ \tt{pH =  -  log[H {}^{ + } ]}} \\  pH =  -  log(4.2 \times  {10}^{ - 5} )  \\ pH = 4.38

Step-by-step explanation:

H

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There are two connected gears. One has 60 teeth and it makes 50 complete revolutions in a minute. How many complete revolutions
VikaD [51]

60/40 *50 = 75

75 revolutions

8 0
2 years ago
Please help :) Find the unknown length y in the following pair of similar triangles. y= ?
Nimfa-mama [501]

Answer:

Y should equal to 4.5

Step-by-step explanation:

Since they are similar triangles and each of the measurements on the second triangle are divided by two you would do the same for y

4 0
3 years ago
Money is invested into an account earning 4.25% interest compounded annually. If the accumulated value after 18 years will be $2
Lunna [17]
We are given with the following:
Effective annual interest, i = 0.0425
Future worth, F = $25000
Number of years, n = 18

We use the formula to solve for the present worth of the money:
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P = 25000 / (1 + 0.0425)^18
P = 11818.73

The closest answer is:
<span>b.
$11,820</span>
7 0
2 years ago
Read 2 more answers
BRAINLIEST AND 10+POINTS! :)
BartSMP [9]

Answer: D.

Step-by-step explanation:

The associative property of addition states that numbers can be added together regardless of how they are grouped.

Answer A shows a property of multiplication.

Answer B shows the additive identity property.

Answer C shows the commutative property.

However, answer D shows that the numbers can be added regardless of how they are grouped.

5 0
3 years ago
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How can you solve y=-2x+2
Svetlanka [38]

Answer:

It is already solved!

Step-by-step explanation:

It is meant to be in y = mx + b form where x is the slope and b is is the y-intercept.

7 0
3 years ago
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