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butalik [34]
4 years ago
9

Solve the equation and explain​

Mathematics
1 answer:
miss Akunina [59]4 years ago
8 0
Start by simplifying the equation by cross multiplying

9(z+1) = 3z

then distribute 9 into the brackets

9z + 9= 3z

then move the constant to the right hand side and change its sign

9z = 3z -9

then move the variable to the left hand side and change its sign

9z - 3z = -9

collect like terms

6z = - 9

then divide both equations by 6 to get z by itself

z = -9/6

simplify the fraction

z = -3/2
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Answer:

Step-by-step explanation:

I think the median you are asking is the middle value,

because there is a total of 20 vehicles,  there are two middle number: 31 and 31.

To solve this:

you first plus these two numbers together, you will get 62.

then divide them by 2, then you will get the middle number.

the middle number will be 31. ( actually because theese two number are the same, you do not really need to plus them then divide by 2, you could just answer the question 31, but because when you do other question and has the same situation but not the same number, (suppose you got 20 and 21) Then you need to do this question like I said above)

I wish this could help you.

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A cyclist is travelling at an average speed of 24km/h.
netineya [11]

Answer:

The answer is: 1. 5 minutes and 2. 133.3 meters

Step-by-step explanation:

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2 / 24 = x / 1

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x = 2/24 = 1/12 of an hour or 60 / 12 = 5 Minutes.

To find how far he travels in 20 seconds:

Multiply 24 km by 1000 to get meters per hour. Divide by 3600 to get meters per second:

24000 / 3600 = 6.6 meters per second.

Multiply by 20 seconds to get the distance traveled in 20 seconds:

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PLEASE HELP ASAP !!!!<br><br><br> Explain Larissa's mistake using 1-3 complete sentences.
kenny6666 [7]

Answer:

Line 6

Step-by-step explanation:

The graph intersects at (-5, 16) and (2, 2)

Because she needs to plug the x's back into the equation

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and  2 = -2(2) + 6  or  2 = 2^{2} + 2 - 4

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3 years ago
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