All categories

3 years ago

If the sum of two expressions is 3x+5 and one expression is 5x-7 what is the other expression

Mathematics

1 answer:

ratelena [41]3 years ago

8 0

Answer:

-2x + 12

Step-by-step explanation:

If we call our other expression y, we can set up an equation tying together 3x + 5, y, and 5x - 7:

$(5x-7)+y=3x+5$

Solving for y by subtracting 5x - 7 from both sides will get us the expression we're looking for:

$y=3x+5-(5x-7)\\y=3x+5-5x+7\\y=-2x+12$

So the other expression in the sum is -2x + 12.

You might be interested in

A football field measures 300 feet in length. It can also be expressed as approximately 5 7x 10miles. If the

kogti [31]

Answer:

The question is incomplete or there are details missing.

Step-by-step explanation:

From similar parameters, if by what they mean is that the football field measures 300feet in length, which is the dimension in length, this can also be in terms of metre.

The conversion factor between ft and metre is 1ft = 0.3048m

As such, we can only have variations or the length of the field measured may have ranges of measurement, but as it is the length of the field can not be expressed in terms of miles, the most reasonable vale of n we can get will be the least measurement in metres.

3 0

3 years ago

How many sets of 2/12 are in 9/12

Vinil7 [7]

We can solve this problem by dividing 9/12 by 2/12. We should do this because to find how many sets of something are in a number, the question is asking us to do division. Doing this, we get 9/12 * 12/2, giving us our answer of 4.5 sets of 2/12 in 9/12.

5 0

3 years ago

What is the best estimate for this sum 1/8+1/6=The sum will be close to?

tamaranim1 [39]

The expression given is

$\frac{1}{8}+\frac{1}{6}$

The sum of the expression will be,

$\frac{1}{8}+\frac{1}{6}=\frac{6+8}{48}=\frac{14}{48}=\frac{7}{24}$

The sum will be

$\frac{7}{24}$

8 0

1 year ago

Someone answer this random question

gayaneshka [121]

Answer:

hmmmmm... thats a tough one

its probably ur mom

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the probability that a two-digit number selected at random has a tens digit less than its units digit

Reika [66]

The probability that a two-digit number selected at random has a tens digit less than its units digit is 0.2667 (4/15).

$A=24B=90\\\\P=A/B\\\\P=24/90\\p=4/15$

There are 90 two-digit numbers (99-9). Of these, six numbers are divisible by 15 (15, 30, 45, 60, 75, 90). This is also divisible by 5. Therefore, the preferred case is 30-6 = 24. Therefore, the required probability is 24/90 = 4/15.

The probability of an event can be calculated by simply dividing the number of favorable results by the total number of possible results using a probabilistic expression. Whenever you are uncertain about the outcome of an event, you can talk about the probability of a particular outcome, that is, its potential.

Learn more about probability here: brainly.com/question/24756209

#SPJ4

6 0

2 years ago