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svetlana [45]
3 years ago
11

I need help on this question

Mathematics
1 answer:
Zepler [3.9K]3 years ago
6 0

Answer:

The answer is A.

They would sell 110 cookie is 3 hours.

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Box a cost $5.25 for 250g and box b cost $4.50 for 375g what box is cheaper per gram and how much cheaper is it
kotegsom [21]

Answer: Box B

Step-by-step explanation:

Box A is 0.021 dollars per gram

Box B is 0.012 dollars per gram

Box B is cheaper per gram by 0.009 dollars

7 0
3 years ago
John and Tim are looking at the equation the square root of the quantity of 3 times x minus 4 equals square root of x . John say
IgorC [24]
The equation is 
3x - 4 = sqrt(x)
where 'sqrt' is shorthand for 'square root'

Let's solve the equation. To do so, we square both sides. Then we get everything to one side
3x - 4 = sqrt(x)
(3x - 4)^2 = (sqrt(x))^2
9x^2 - 24x + 16 = x
9x^2 - 24x + 16-x = x-x
9x^2 - 25x + 16 = 0

Now use the quadratic formula. See the attached image for those steps.

After using the quadratic formula the two possible solutions are x = 1 or x = 16/9

We need to check each possible solution to see if it is extraneous or not.

----------------------------

Checking x = 1

3x - 4 = sqrt(x)
3*1 - 4 = sqrt(1)
3 - 4 = 1
-1 = 1

The final equation is false, so x = 1 is not a true solution

x = 1 is extraneous. 

So far, John is correct; however, we need to see the nature of the possible solution x = 16/9

So let's check it
----------------------------

Checking x = 16/9

3x - 4 = sqrt(x)
3*(16/9) - 4 = sqrt(16/9)
48/9 - 4 = 4/3
16/3 - 4 = 4/3
16/3 - 12/3 = 4/3
(16 - 12)/3 = 4/3
4/3 = 4/3

The last equation is true, so x = 16/9 is a proper solution.

This solution is considered non-extraneous. So Tim is also correct
----------------------------

They are both correct because there are two possible solutions. One of which is extraneous (x = 1) and the other is non-extraneous (the fraction x = 16/9)

3 0
3 years ago
A. 208 in squared<br> B. 352 in squared <br> C. 136 in squared
bonufazy [111]
I think (A.) if not im so sorry
Good luck
8 0
3 years ago
PLEAASE HELP DUE TODAY
Kryger [21]

Answer:

I'm not sure but try 13.5.

Step-by-step explanation:

It might not be correct sorry

8 0
3 years ago
Jorge is one year younger than his brother. The sum of their ages is no less than 25 years. What is the youngest age Jorge's bro
blagie [28]
The answer you're looking for is 13
7 0
3 years ago
Read 2 more answers
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