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3 years ago

What is 1/16 minus 7/12 i need help

Mathematics

2 answers:

leonid [27]3 years ago

5 0

-0.4759615385 is what I think it is

krok68 [10]3 years ago

4 0

First you need to find a common denominator. The answer in decimal form is −0.52 or in fraction format -13/25

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The cheerleaders are practicing a dance routine in which all 36 of them need to be in a triangular formation. there will be two

dimulka [17.4K]

If you start with 1 cheerleader in row A, then you'll have 3 cheerleaders in row B (add on 2), and then 5 cheerleaders for row C (add on another 2), etc etc.

Note how: 1+3+5 = 4+5 = 9 which is a perfect square. Also note that 36 is a perfect square.

Rule: The sum of the first positive n odd numbers is going to be equal to n^2. In the example of adding the first three odd numbers (1,3,5), we have n^2 = 3^2 = 9 as the sum

So as you can see, we'll have n = 6 rows because n^2 = 6^2 = 36 and

1+3+5+7+9+11 = 36

which is the sum of the first six positive odd numbers. So we'll have 1 cheerleader in row A, 3 in row B, 5 in row C, 7 in row D, 9 in row E, 11 in row F to have 6 rows total.

3 0

3 years ago

4 over x+4 - 2 over x+1

babymother [125]

(4/(x+4-2))/x+1

4/(x+2)=x/4+1/2

(x/4+1/2)/x+1

x=-2/5

7 0

3 years ago

Serra rode 15 mi in 1.5 hr. Phaelon rode 38 mi in 3.5 h. Justice rode 22 mi in 2.25 hr. Who had the fastest average speed?

Tamiku [17]

Phaelon had the fastest average speed. I hope this helps :)

3 0

4 years ago

A truck driver who covers the interstate in 4 1/2hours traveling at the posted speed of 55 mph. If the speed limit is raised to

kotegsom [21]

Answer: The same trip will require 3.8 hours.

Step-by-step explanation:

Since we have given that

Time = $4\dfrac{1}{2}=\dfrac{9}{2}$

Speed = 55 mph

So, distance would be

$Speed\times time=55\times 4.5=247.5\ miles$

If the speed limit = 65 mph

So, time will be

$\dfrac{247.5}{65}=3.8\ hours$

Hence, the same trip will require 3.8 hours.

6 0

4 years ago

I need help I have searched everywhere and nothing

Marta_Voda [28]

Answer:

See attached

Step-by-step explanation:

All answers in one graph, refer to attached

The function we need is

C(x) = 100(2*5280 - x) + 180 $\sqrt{800 +x^2}$ , where 2*5280= 2 miles

Table included as well

The vertex is about x = 19 ft which corresponds the minimum cost

Any other value, including negative reveal greater cost

Note. there is a bit confusion over 2 miles or 2000 ft, but the graph is going to be same in shape and vertex for x, the value for cost will be different

3 0

4 years ago