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Gennadij [26K]
3 years ago
8

Solve x/10 = -7a.x=-70b.x=-0.7c.x=3d.x=-17​

Mathematics
1 answer:
Brums [2.3K]3 years ago
8 0

The answer is A. x=-70.

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Scientists have discovered a new substance with a hydrogen ion concentration of 0.095811180 M. Determine the corresponding pH le
blsea [12.9K]

Answer: 1.018

Step-by-step explanation:

The pH level of a substance indicates the concentration of hydrogen ions (H^{+}) in a solution and is calculated by:

pH=-log(H^{+})

In this case the hydrogen ion concentration is 0.095811180 M, where

M=\frac{moles}{volume}. Hence:

pH=-log(0.095811180 M)

pH=1.018 This means this new substance is acid

4 0
3 years ago
Please help me with this question. I don’t understand how to do this.
Blizzard [7]

Answer:

133/152

Step-by-step explanation:

The probability of 2 independent events is the product of the individual events.  Independent means the first event has no effect on the probability of the second event.  Since we are replacing the first marble, the first even has no effect on the probability of the second event.  

There are 48 total marbles

Let A = pulling a blue marble

Let B = pulling a red marble

So

P(A) = 14/48

P(B) = 19/48

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P(A then B) = (14/48)(19/48) = 266/2,304 = 133/1,152

8 0
3 years ago
the east side of mrs. hammonds ranch is 475 meters longer than the west side the west side is 2.6 km long what is the length of
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There is 1000 meters in one kilometer
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3.075 kilometers 
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3 years ago
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What is the measure of ∠x Angles are not necessarily drawn to scale.
Neporo4naja [7]

Answer:

The answer is 138 degrees.

Step-by-step explanation:

Add both the opposite sides and, according to the Exterior Angle Theorem, the sum of those to sides will equal the exterior angle.

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3 years ago
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