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lyudmila [28]
3 years ago
13

Find the value of x Please

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Answer:

7

Step-by-step explanation:

9x+18=2x+19 (corresponding angle)

or, 9x-2x=19-18

or, 7x=1

or, x= 7

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B. angle 2 and angle 3 and congruent.

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A scale has a percent error of 7% the scale reads the mass of a book as 450 g.
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B, is the correct answer.
7% of 450 is 31.5
We add 31.5 to 450 to find out highest possible error, and subtract 31.5 from 450 to find out lowest possible error.
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Liana is studying the activity of nurse sharks. She starts at a position that is 25 feet below sea level. She rises 9 feet, then
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Answer:

I believe the answer is -28

Step-by-step explanation

I gotchu bro

The answer is -28 because Liana starts at 25 below sea level (which is the same thing as -25) If she rises 9 feet, then you know to add because she is going up so your just gonna add. Next she descends 12 feet, so she went down, so subtract. So i know the answer is going to be -28 because -25+9 is -16, then imma subtract -16 and 12 so, -16 - 12= -28. There ye go

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2 years ago
At noon, the minute and the hour hands of a clock overlap. In how long will they again overlap?
kati45 [8]

Answer:

Okay. At noon, the hour and minute hand overlap. First, let’s calculate the speed of the hands.

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Once the clock starts, the minute hand goes ahead and rotates ahead of the hour hand. At 1:00, the minute hand is at 12, and the hour hand is ahead at 1. This is where we will start our calculations.

Now, we have a variable, m, which is the minutes that have passed since the clock started. So, our minute hand speed is 6m, and our hour hand speed is 0.5m. However, because the hour hand is at one, it is at 30 degrees. (360/12 * 1.) This means our equation is 6m = 0.5m+30.

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6m = 0.5m+30

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m = 30/5.5

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So, our final total is 1 hour 5 minutes and 27 seconds.

Step-by-step explanation:

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3 years ago
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Sever21 [200]
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