All categories

3 years ago

Simplify − 2/3 − 3/5 .

Mathematics

2 answers:

zzz [600]3 years ago

4 0

-19/15

you multiply boh sides by the other denomonater

-10 and -9
15 15

Irina-Kira [14]3 years ago

3 0

−2/3−3/5=−2/3−3/5=−2/3+−3/5=−10/15+−9/15=−10+−9/15=−19/15(Decimal: -1.266667)

You might be interested in

50 points please give step by step instruction

fenix001 [56]

Answer:

 x = 90, 199.5, 270, 340.5 degrees

Step-by-step explanation:

cos2x + 2sinx = sin^2x

Change cos2x to 1 - 2sin^2x:

1 - 2sin^2x + 2 sinx = sin^2x

Shift the terms to make it a quadratic equation:

3 sin^2x - 2sinx - 1 = 0

Factorise the quadratic equation:

(sinx - 1)(3sinx + 1) = 0

sin x = 1 or sin x = -1/3

Solve for sin x = 1:

From graph of sin x, x = 90 and 270 degrees when sin x = 1.

x = 90, 270 degrees

Sin x = -1/3

Basic angle = sin inverse (1/3)

= 19.471 degrees

Since sin x < 0, x is in the 3rd or 4th quadrant

x = 180 + 19.471, 360 - 19.471

x = 199.5, 340.5

Hence, x = 90, 199.5, 270, 340.5 degrees

[Sorry if I am wrong :( ]

8 0

4 years ago

I REALLY NEED THIS ANSWERED STRAIGHT AWAY PLEASE!!!!!! A juice company decides to test five different brands of juice. The diffe

liberstina [14]

10 different pairs. Since there are 5 different brands you simply add 4+3+2+1 to get 10.

6 0

4 years ago

A contractor purchases 5 dozen pairs of padded work gloves for $67.80. She incorrectly calculates the unit price as $13.56 per

Alex787 [66]

Answer:

Step-by-step explanation:

calculates the unit price as $13.56 per pair for the expense report.The correct unit price is $nothing per pair. Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he ... Error Analysis A contractor purchases 5 dozen pairs of padded work gloves for $67.80 incorrectly

5 0

3 years ago

Read 2 more answers

You have a standard deck of 52 cards. You pick one card from the deck and then, without putting the first one back, pick a secon

Nina [5.8K]

Set up the two events
A = first card is a 9
B = second card is a 9

The probability for event A is
P(A) = 4/52
because there are four "9" cards out of 52 total

If event A happens first, and B follows, then the probability is
P(B|A) = 3/51
because there are 3 nines left over out of 52-1 = 51 total left over
No replacement has been made
The notation P(B|A) means "probability of event B given that event A has happened"

Multiply the probabilities
P(A and B) = P(A)*P(B|A)
P(A and B) = (4/52)*(3/51)
P(A and B) = (4*3)/(52*51)
P(A and B) = 12/2652
P(A and B) = 1/221
P(A and B) = 0.00452488687782

Rounded to 4 decimal places, the approximate answer is 0.0045
The exact answer as a fraction is 1/221

7 0

3 years ago

A PlayStation 5 cost $789.99. Sales tax is 8%. How much will you pay in sales tax?

Sonja [21]

Answer:

63.20

Step-by-step explanation:

Because you do 8% of 789.99 which equals 63.20

4 0

3 years ago

Read 2 more answers