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cupoosta [38]
3 years ago
5

What is (-1/2) - (-2/5) ? help please .

Mathematics
2 answers:
Mashutka [201]3 years ago
8 0

Answer:

-1/10

Step-by-step explanation:

Valentin [98]3 years ago
8 0

Answer:

-1/10

Step-by-step explanation:

First you need a common demonator of 10

so

-1/2 --> -5/10

and  -2/5 --> -4/10

using this the equation is:

-5/10 - (-4/10) which equals

-5/10 + 4/10= -1/10

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50 POINTS UNLESS THE PHOTO DIDNT WORK, BUT PLEASE HELP.
Scrat [10]

Answer:

The picture doesn't work but tell me in the comments what it is and i will gladly help you out. Please mark me the brainliest answer?

<3 Hoped this helped!!!! Have a good day!!! :D

8 0
4 years ago
Read 2 more answers
PART A: Maria rented a coat at $285 for 3 days. If she rents the same coat for 60 days, she has to pay a total rent of $510. Wri
Dmitriy789 [7]
<span>1) Name the variables

Number of days: x

rent: y

2) state the initial points

   x           y
days        $

  3           285

60           510


3) assume linear relation:

=> (y - yo) / (x - xo) = (y1 - yo) / (x1 - xo)

=> (y - 285) / (x - 3) = (510 - 285) / (60 - 3)

=> (y - 285) / (x - 3) = 225 / 57 = 75 / 19

=> 19 (y - 285) = 75 (x - 3)

=> 19y - 19*285 = 75x - 75*3

=> 19y - 75x = 5415 - 225

=> 19y  - 75x = 5190

=> standar form = -75x + 19y = 5190


PART B: Write the equation obtained in Part A using function notation.

-75x + 19y = 5190

=> 19y = 5190 + 75x

=> y = 5190/19 + (75/19)x

=> function notation = f(x) = (75/19)x + 5190 / 19

PART C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals.

1) Coordinate axes:

x: number of days

y: rent

2) draw the two given points: (3,285) and (60, 510)

3) draw the line that joins those points from the interception of the y-axis until some points further (60, 510).
</span>
6 0
3 years ago
Wayne bought blueberries. He uses 3/8 of the blueberries to make blueberry bread, 1/6 of the blueberries to make pancakes, and 5
yKpoI14uk [10]

Answer:

Wayne bought 72 blueberries.

Step-by-step explanation:

To combine the fractions, convert all of the fractions to a denominator of 24.

3/8 * 3/3 = 9/24

1/6 * 4/4 = 4/24

5/12 * 2/2 = 10/24

Now add together the fractions

9/24 + 4/24 + 10/24 = 23/24

He used 23/24 of his blueberries, or 69 of them.

To find the total amount of blueberries, divide 69 by 23, then multiply that number b 24.

69 / 23 = 3

3 * 24 = 72

Wayne bought 72 blueberries.

6 0
4 years ago
Read 2 more answers
What is the standard deviation of 77, 45, 72, 56, 98, 60, 70, 89, 50, 80, 95, 70, 34, 77, 65, 70, 70, 82, 86, 86.
Anton [14]

Answer:

The standard deviation of the numbers is 16.154 the given observations are 77 45 72 56 98 60 70 89 50 80 95 70 34 77 65 70 70 82 86 86

.Step-by-step explanation:

I hope this helped !

5 0
3 years ago
3/8 *5/6 pls help asap
Mazyrski [523]

Answer:

5/16

Step-by-step explanation:

It's a little easier when you write the problem like this:

 3      5

----- · -----

8       6

Now reduce that 3/6 to 1/2:

 1      5

----- · -----  =  5/16

8       2

6 0
4 years ago
Read 2 more answers
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