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Deffense [45]
1 year ago
6

Some one pleas help What is -9/14+2/7

Mathematics
2 answers:
aliya0001 [1]1 year ago
8 0

Step-by-step explanation:

please mark me as brainlest

ivann1987 [24]1 year ago
8 0
Answer: -5/14

Step-by-Step Explanation:

= -9/14 + 2/7 (Take LCM of Denominator)
= -9/14 + (2 * 2)/14 (Taking 14 as LCM)
= -9/14 + 4/14 (Add the Numerators)
= (-9 + 4)/14
=> -5/14
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Can you help prove this identity?
mario62 [17]
Its six idk really ask your teacher for more help


3 0
3 years ago
1:X = X:25. What number can replace X?
igor_vitrenko [27]

5 is your answer

1: 5 = 5: 25

Note that the colon can act like a fraction.

Simplify 5/25.

(5/25)/(5/5) = 1/5 = 1/5

5 is your answer

hope this helps

7 0
3 years ago
A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red
mamaluj [8]

Let red marbles = X.

The probability is 1 out of 5, written as 1/5

1/5 in terms of red marbles is equal to the number of red marbles divided by 5x, where 5x is the total number of marbles.

1/5 = x/5x 

Now you have 5x total marbles, x red and 4x blue. 

Add 5 more red and the new probability is: 

(x+5)/(5x+5) = 1/3 

Simplify:

3x+15 = 5x+5 

Now solve for x:

Subtract 3x from both sides:

15 = 2x +5

Subtract 5 from each side:

2x = 10 

Divide both sides by 2:

x = 10/2

X = 5

There were originally 5 red marbles.

5 0
3 years ago
Carlos used 6 boards to build 2/3 of a front porch. How many boards will Carlos use to build the whole porch? Express your answe
antiseptic1488 [7]

Answer:

9 boards

Step-by-step explanation:

2/3 of the porch= 6 boards

so to figure out how much one third of the porch needs you find half of what it takes to fill in 2/3 of the porch and you get 3.

so 3=1/3 of the porch

then you simply do 3times 3 or 3+3+3 and you get 9

so it takes 9 boards to fill the whole porch

8 0
3 years ago

larisa86 [58]

Answer:

The correct answer is D, 0.20. You add the probabilities of either situation occurring and subtract the probability of both of them occurring.

Step-by-step explanation:

0.25 + 0.08 - 0.13 = 0.20

3 0
3 years ago
Read 2 more answers
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