All categories

3 years ago

Find the sum -6/3 - (-7/15)

Mathematics

2 answers:

Brums [2.3K]3 years ago

8 0

Answer:

-1 $\frac{8}{15}$

Step-by-step explanation:

That's the answer I think

balandron [24]3 years ago

8 0

Answer:

- 23/15 or - 1 8/15

Step-by-step explanation:

When you want to subtract fractions, you first want to see if they have the same denominator. In this case, there isn't a common denominator so we need to make it so there is. Since 15 is the larger one and a multiple of 3, we can change -6/3 to -30/15 by multiplying the top and bottom by 5. Now the double negatives cancel each other out so instead of -30/15 - (-7/15), it will be -30/15 + 7/15. Add them together and you get -23/15.

You might be interested in

HELP ME ASAP PLEASE!

vodomira [7]

The first one is the answer.

4 0

3 years ago

3x20=3x(10+_) what is the answer?

Assoli18 [71]

The obvious answer to this would be 10.

The most simple way to do it would be taking out 3 x from each side of the equation and do 20 = 10 + _

Another way would be to actually solve it.

Let us put into the situation that the unknown variable would be y. The equation then would look like this.

3 x 20 = 3 x (10 + y)

Then solve

3 x 20 = 3 x (10 + y)
-------- ---------------
3 3
20 = 10 + y
20 - 10 = y
10 = y

10 would be the answer

3 0

3 years ago

Read 2 more answers

Simplify completely*******

Elodia [21]

Answer:

$\displaystyle \frac{x - 12}{4}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Factoring

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{2x - 24}{8}$

Step 2: Simplify

[Fraction - Numerator] Factor: $\displaystyle \frac{2(x - 12)}{8}$
[Fraction] Reduce: $\displaystyle \frac{x - 12}{4}$

8 0

2 years ago

Read 2 more answers

It’s almost time for Prom! You want to book a limo and are trying to figure out how much it will cost. The limo company charges

Sati [7]

$y = (200 + 350) \times x = 550 \times x$

7 0

3 years ago

A recent survey estimated that 19 percent of all people living in a certain region regularly use sunscreen when going outdoors.

serg [7]

The correct option is: (E) It is plausible that the percent of all people living in the region who regularly use sunscreen is 18.5%.

Step-by-step explanation:

The margin of error is a statistic expressing the amount of random sampling error that occurred due to miscalculation and survey results. The margin error is usually a small amount of error.

Generally 5% of margin of error is common and acceptable. When the percentage of the margin of error increases, the confidence in the report result will be reduced.

The recent survey reveals that 19% of the people living in a certain region regularly use sunscreen when going outdoors. The permissible margin of error in this survey is 1%.

Probably the percentage of people using sunscreen in the particular region will be 18.5%.

5 0

3 years ago