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adelina 88 [10]
2 years ago
6

Someone help and please make sure it’s right thank you :)

Mathematics
1 answer:
lakkis [162]2 years ago
7 0

Answer:

D, 8

Step-by-step explanation:

7x-1=5x+15

<em>subtract</em> 5x from both sides

2x-1=15

<em>add</em> 1 to both sides

2x=16

<em>divide</em> both sides by 2

x=8

<em>plz mark me brainliest.</em> ;)

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−3z−z<br><br><br><br> Help pleease i will give u 20 points
MAVERICK [17]

Answer:

-4z is the answer

Step-by-step explanation:

-3z-z

-4z

3 0
1 year ago
PLEASE HELP I NEED ANSWER
Lubov Fominskaja [6]
You have to use the y=mx+b formula to find the equation
7 0
3 years ago
The probability that Caroline wins a raffle is given by the expression
RSB [31]

Answer:  \frac{n-m}{n}

This is the same as writing (n-m)/n

Don't forget about the parenthesis if you go with the second option.

==================================================

Explanation:

The probability that she wins is m/n, where m,n are placeholders for positive whole numbers.

For instance, m = 2 and n = 5 leads to m/n = 2/5. This would mean that out of n = 5 chances, she wins m = 2 times.

The probability of her not winning is 1 - (m/n). We subtract the probability of winning from 1 to get the probability of losing.

We could leave the answer like this, but your teacher says that the answer must be "in the form of a combined single fraction".

Doing a bit of algebra would have these steps

1 - \frac{m}{n}\\\\\frac{n}{n} - \frac{m}{n}\\\\\frac{n-m}{n}\\\\

and now the expression is one single fraction.

8 0
3 years ago
It cost Naomi $7.70 to send 154 text messages. How many text messages did she send
s2008m [1.1K]

You have to find the unit rate

SO..

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So it cost her 0.05 cents for each text.

So then you divide $ 5.25 by the unit rate to get the number of text

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To check it you just multiply the unit rate by the number of text you got and you show come up with $ 5.25

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3 years ago
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Liono4ka [1.6K]
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6 0
3 years ago
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