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astra-53 [7]
3 years ago
12

It cost Evan $17.70 to send 177 text messages. How many text messages did he send if he spent $19.10

Mathematics
2 answers:
ki77a [65]3 years ago
7 0

Answer:

Hey there!

17.70 for 177, means 10 cents for one.

Then, if he spent  19.10, he had 191 text messages.

Let me know if this helps :)

Leviafan [203]3 years ago
3 0

Answer:

191

Step-by-step explanation:

17.70---- 177

19.10-----191

First just take 177/17.70= 10

all you have to do is multiply by 10

so

19.10= 191

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I just need to find the value of b
WITCHER [35]

Answer:

straight line add up to 180 so subtract 42 from 180 thts ur answer

8 0
2 years ago
the line of symmetry of a parabola whose equation is y = ax ^ 2 - 4x + 3 is =-2 what is the value of "a"
77julia77 [94]
Y= ax² -4x +3

-b/2a is x - coordinate of the vertex,
line of symmetry x=-2, x=-2 is a coordinate of the vertex also, because the line symmetry has vertex.

x= -b/2a
x= -2, b= -4
-2=-(-4)/2a
-2=4/2a
-2=2/a
a=2/(-2)=-1
a= - 1 
5 0
3 years ago
If X is a random variable denoting number of defective items, which discrete probability distribution is appropriate
Lesechka [4]

Considering that for each item, there are only two possible outcomes, and the probability of an item being defective is independent of any other item, the binomial distribution is appropriate.

<h3>What is the binomial probability distribution?</h3>

It is the probability of <u>exactly x successes on n repeated trials, with p probability</u> of a success on each trial.

More can be learned about the binomial distribution at brainly.com/question/24863377

6 0
1 year ago
A man who is six feet tall casts a shadow fifteen feet long at the same time a shadow of a tree
Aleksandr-060686 [28]

Answer:

The tree is thirty feet tall (30)

Step-by-step explanation:

So you divide 6 by 15 and you get .4

Then you multiply .4 by 75

And then you have 30

which the answer is 30

7 0
2 years ago
Read 2 more answers
I don't know how to do this. Help please
ASHA 777 [7]
Here is your equation simplified 

Hope it helps!

7 0
3 years ago
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