MATHEMATICS MIDDLE SCHOOL

Gina charges $28 for 3 hours of swimming lessons. Hector charges $18 for 2 hurs of swimming lessons. Which instructor offers a better deal?

Answers

Answer 1

Answer:

Answer:

Hector offers a better deal: $18 for 2 hours.

Step-by-step explanation:

1. You have the following information given in the problem above:

- Ginas offers $28 for 3 hours.

- Hector offers: $18 for 2 hours.

2. Then, you must write the rates:

a) $28 for 3 hours:

$(28)/(3)=9.33$ dollars per hour.

b) $18 for 2 hours:

$(18)/(2)=9$ dollars per hour.

3. Therefore, the better deal is $18 for 2 hours

Answer 2

Answer:

Answer:

Hector is providing best deal.

Step-by-step explanation:

Given data:

Gina charges = $28

Time by Gina = 3 hours

Hector charges = $18

Time by Hector = 2 hours

Solution:

Charges per hour by Gina = $28/3

= $9.33

Charges per hours by hector = $18/2

= $9

Hence hector charges low per hour than Gina. So hector provides the best deal.

Explanation:

Now the both instructor provides lesson with different charges with different hour. So if we calculate the charges per hour than the charges per hour Gina is charging more than hector.

Hector is charging $9 for one hour and $27 for 3 hour while Gina is charging $28 for 3 hours.

So the Hector is providing best deal.

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Find the factored form of 18n+12

Answers

factored: 6(3n+2)

6 is the greatest common factor of 18n and 12 so you change it to distributive property by factoring it to 6(3n+2)
if you distribute 6(3n+2) you get 18n+12

A shoe box measures 15 in. By 7 in. By 41/2 in. What is the surface area of the box?

Answers

Surface area for a cuboid of length, l, bredth, b and height h.

= 2*(lb + bh + lh)

for 15 by 7 by 4 1/2 = 15 by 7 by 4.5

Surface area = 2*(15*7 + 15*4.5 + 7*4.5)

= 2*(105 + 67.5 + 31.5)

=2 *(204) = 408

Surface area of box = 408 in²

What number do you divide by 12 to get 9

Answers

Well I don't know. Let's figure it out together.

You said (a number) divided by 12 gives you 9 .

A fraction is the easiest way to show division, so
you can write this equation:

   (number) / 12 = 9

Now you can multiply each side of the equation by 12 .
When you do that, you have ...

   number = 9 x 12

   number =    108 .

Now you know how to find it. That's even better than just
having the answer.

Work backwards. 12*9=108
check: 108/12=9

What does 4.32 tons equal in pounds? How do you solve it? What are the steps you've used?

Answers

1 ton = 2000 Pounds(lb)
4.32tons * (2000lb/1ton) (tons cancel)
= 4.32 * 2000lb
= 8600lb

What is, 7 3/10+6 1/3+2 7/10?

Answers

7 3/10 + 6 1/3 + 2 7/10

First change them to improper fractions

73/10 + 19/3 + 27/10

now find the common denominator which would be 30

73/10 = 219 /30

19/3 = 190/30

27/10 = 81 /30

now add (219 + 190 + 81) = 490/30

now divide 490 ÷ 30 = 16 1/3

Your answer is 16 1/3

Hope this helps. :)

We are going to add 7 3/10 and 2 7/10 first. $\boxed{\boxed{7 (3)/(10)}}+\boxed{\boxed{2 (7)/(10)}}}=\boxed{\boxed{9 (10)/(10)}}$ . Now we are going to add $\boxed{\boxed{9{ (10)/(10)}}}$ by $\boxed{\boxed{6{ (1)/(3)}}}$ . $\boxed{\boxed{9{ (10*3)/(10*3)}}}=\boxed{\boxed{9{ (30)/(30)}}} \ and \ \boxed{\boxed{6 (1*10)/(3*10)}}}=\boxed{\boxed{6{ (10)/(30)}}}$ . Finnally we add. $\boxed{\boxed{9{ (30)/(30)}}}+{\boxed{\boxed{6{ (10)/(30)}}}=\boxed{\boxed{15 (40)/(30)}}}.$ . Last, but not least we simplify, $\boxed{\boxed{15{ (30:10)/(40:10)}}}=\boxed{\boxed{15 (3)/(4)}}}$ . Therefore, your answer is $\boxed{\boxed{15 (3)/(4)}}}$ . Hoped I helped. :)

Sid painted 10 portraits every 30 hours at the rate how long will it take to paint three portraits

Answers

Answer:

9 hours

Step-by-step explanation:

10 portraits in 30 hours, let's write it mathematically

10p=30h then 1p=(30/10)h= 3 h three hours for a single portrait

therefore for 3 portraits he will take three times 3 hours

3p=3*3h = 9 hours

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