First lets break it down into these 2 equations: 2z - 9 = 1 and (-2z - 9) = 1
For the first equation its z = 5 and all u have to do is add 9 to both sides, add 1 + 9 to make it 10, then divide 10/2 to make it 5
For the second equation its z = 4 and all u have to do is simplify brackets, subtract 9 from both sides, subtract 1 - 9 so it can be -8, divide both sides by -2, two negatives make a positive so now -8/-2 is going to be 8/2, and lastly 8/2 is 4 since 2 * 4 = 8
Answers: z = 4, 5.
Answer:
Step-by-step explanation:
<u>Given data:</u>
Base = b = 4 cm
Height = h = 4 cm
<u>Required:</u>
Area of triangle = A = ?
<u>Formula:</u>
A = bh / 2
<u>Solution:</u>
A = (4)(4) / 2
A = 16 / 2
A = 8 cm²
Hope this helped!
<h3>~AH1807</h3>
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Learn more about money in: brainly.com/question/14253896
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Answer:
50.465 km
Step-by-step explanation:
In order to find the distance in kilometers, you need to first convert the marathon distance into yards. Since the conversion measurement of 1 mile = 1760 yards is given, you can use this to find the total yards in 26 miles:
or x = 45,760 yards
Adding this amount to the additional 385 in the marathon distance:
45760 + 385 = 46,145 yards
Since 1 yard = 0.9144 meters, we can find the number of meters the same way we found yards:
or m=50,465 meters
Since the question is asking for kilometers, we can need to divide the number of meters by 1000, or move the decimal point three places to the left:
50,465 ÷ 1000 = 50.465 km
Answer:
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