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ra1l [238]
3 years ago
8

Question 3

Mathematics
2 answers:
Sergio [31]3 years ago
8 0

9514 1404 393

Answer:

  7x - 19 = x + 16

Step-by-step explanation:

Once you get over your aversion to "word problems", you find that the translation from English is not hard.

"Seven times a number" is 7x.

Nineteen less than that is 7x-19.

"16 more than the number" is x+16.

"Is" means "is equal to," so you have ...

  7x -19 = x +16 . . . . . . . matches the first choice

_____

<em>Additional comment</em>

The 11-digit number at the top is intended to impart an energy that may help with an aversion to word problems. The effect is subtle and often takes numerous repetitions over time.

Oksanka [162]3 years ago
6 0

Answer:

 7x - 19 = x + 16

Step-by-step explanation:

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Passes through (1,12) and has a vertex (10,-4)
agasfer [191]

Answer: 16/81 (x-10)^2 -4

Step-by-step explanation:

To write a vertex equation with just a point and the vertex, you have to figure out the variables.

In vertex form, the equation is y = a (x-h)^2 + k

Your y is 12, x = 1, h = 10, and k = -4

Plug everything into equation

12 = a (1 - 10)^2 -4

12 = a (-9)^2 - 4

12 = 81a - 4

16 = 81a

16/81 = a

Now you know what the 'a' value is.

If you graph 16/81 (x-10)^2 -4 , you will get a point at (1,12) and a vertex of (10,-4)!

I hope this helps!

3 0
3 years ago
g A slot machine has three slots; each will show a cherry, a lemon, a star, or a bar when spun. The player wins if all three slo
Law Incorporation [45]

Answer:

64

Step-by-step explanation:

Let us consider E_abc to be the event that a, b and c appear on the first, second and third slot of the spin machine.

Now, we are told that each slot has 4 possibilities which are a cherry, a lemon, a star, or a bar when spun.

Thus, from mn rule in probability, the total number of simple events in the sample space is = 4³ = 64

7 0
3 years ago
how much water should be mixed with 6 gallons of 55% solution of sulfuric acid to make a 20% solution of sulfuric acid
nevsk [136]
Hello.

For all dilution problems use the dilution equation: 
<span>C1V1 = C2V2 </span>
<span>20*V1 = 6*55 </span>
<span>V1 = 6*55/20 </span>
<span>V1 = 16.5 gallons </span>
<span>The final volume must be 16.5 gallons </span>
<span>You must add 16.5 - 6 = 10.5 gallons water to be added.
</span>
Have a nice day
6 0
3 years ago
I need help with this problem
Misha Larkins [42]
I think first 80 and second 90
4 0
2 years ago
Davens pays $50 each week for guitar lessons. How much will he pay after 3/4 of a year
Alja [10]
You’ve got to work out 3/4 of the year first, that’s 75%, after you need to work out how many weeks are in those days so you divide it by 7 then divide that answer by $50 and hopefully you get your answer. hope this helps
5 0
2 years ago
Read 2 more answers
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