What is the sum of the fractions 1/4,3/8,and 5/14?

Answers

Answer 1

Answer: $(1)/(4)+(3)/(8)+(5)/(14)=\ \ \ \ | making\ common\ denominator\n\n(28)/(112)+(14)/(112)+(8)/(112)=(50)/(112)=(25)/(56)\n\nSolution\ is\ (25)/(56).$

Answer 2

Answer: 55/56 this is what I got but I'm not positive if it is right

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Plz help with 1 through 6 show ur work

Answers

1. 5×10×7= 350
2. 12×6×8=576
3. 4.2×3.5×2=29.4
4. 1.1×1.5×2.6=4.29
5.4×3×5= 60
6. 4.1×2.6×5.1=47.97

The lock is numbered from 0 to 49. Each combination uses three numbers in a right, left, right pattern. Find the total number of possible combinations for the lock.

Answers

If I'm not wrong, it would be 147 combinations because 49*3=147

Answer to this question

Answers

-0.6875 is the answer to number 5

1,5 is the answer to 8

Caitlyn did 6/7 of the problems on her math correctly and 4 incorrectly. She did all the problems. How many were there?

Answers

if $(6)/(7)$ were incorrect, it means that $(1)/(7)=4$ were correct
$4*7=28$
There were 28 problems ;)

Let f(x) =x squared +3x-4 and g(x) =x+5. Find f(x) times g(x).

Answers

Answer:

x^3 + 8x^2 + 11x - 30

Step-by-step explanation:

f(x) times g(x) = (x^2 +3x-4)(x+5)

= x^3 + 5x^2 + 3x^2 + 15x - 4x - 20

= x^3 + 8x^2 + 11x - 30

A yogurt costs 55 pence . how many yogurts can be bought for 3 pounds

Answers

we have to see how many times 55 pence fits into 3 Pounds:

3/0.55=?

if we multiply both numbers by 100, so that there are no fractions, we have:

300/55=5 and 25 cents left
(check: 5*55=275)

so the correct answer is 5 yoghurts.

Okay so this is a matter of how many 0.55's go into 3.00

The best way to do this is:
Convert 3.00 to pence
3.00 = 300p

Then keep adding 55p to itself to work out how much 1 yoghurt is, 2 then 3 etc.
1 yoghurt = 55p
2 yoghurts = 110p
3 yoghurts = 165p
4 yoghurts = 220p
5 yoghurts = 275p
6 yoghurts = 330p

Okay, now 330p is 3.30 which is more than 3.00, which means that there isn't enough money for 6, but there is for 5.

EXTENSION:
To work out how much would be left over:
300 - 275 = 25p

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