1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yan [13]
3 years ago
6

Please Help 1. (2/5)(-5/7) show your work 2. 4/9-1/3 show your work

Mathematics
1 answer:
valina [46]3 years ago
6 0

Answer:

Step-by-step explanation:

1. (2/5)(-5/7) = (2)(5)/(-5)(7) = -10/35 = -2/7

2. 4/9 - 3/9 = 1/9

You might be interested in
What is the square root of -372
wel

Answer:

19.2873015 (Done by a calculator) <---- could be wrong

Step-by-step explanation:

And fun fact:

Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not perfect square are members of irrational numbers. This means that they can't be written as the quotient of two integers.

Hope it helps!

4 0
2 years ago
Read 2 more answers
calculate how much 1% salt solution must be mixed with how much 5% salt solution to make 100 milliliters of 2% salt solution. yo
Setler79 [48]
Let x be the amount (the volume in milliliters) of the 5% solution to be mixed.

Then the volume of the 1% solution is 100-x milliliters.


Then your "concentration" equation is

%280.01%2A%28100-x%29+%2B+0.05%2Ax%29%2F100 = 0.02,


or, equivalently,

100-x + 5*x = 200,

which implies

4x = 100 ----> x = 100%2Fx = 25.


Answer: 25 milliliters of the 5% solution must be mised with 100-25 = 75 milliliters of the 1% solution.
7 0
3 years ago
7.) After paying $20,000 for a car, you read that this model has decreased in value 15% per
mars1129 [50]
B is the answer to this question
6 0
3 years ago
NEED HELP ASAP ALERTI NEEDHELP Plz help its due at 11:59​
Maksim231197 [3]

Answer:

6,3,-3, and -6

Step-by-step explanation:

You just replace y with the given numbers, then solve for x

3 0
3 years ago
I need answer Immediately!!!!!!!
Dennis_Churaev [7]

Answer:

y= 5x - 3

Step-by-step explanation:

For the slope, use this formula (y2 - y1) / (x2 - x1)

I used (1,2) and (2,7) from the chart

plug 7 for y2, and 2 for x2

then plug 2 for y1, and 1 for x1

7-2 / 2-1 = 5/1 = 5    <-- this is the slope.

Find the y intercept by plugging in (1,2) into y=5x + b

2 = 5(1) +b

2= 5 + b  (subtract 5 on both sides)

-3 = b

So the answer is y= 5x - 3

4 0
3 years ago
Other questions:
  • Problem page ali made a shirt using 15 meters of yellow fabric and 12 meters of green fabric. how many meters of fabric did he u
    11·2 answers
  • How to work out 5-[5+8÷4-1]
    10·2 answers
  • Simplify using appropriate identity 0.85 × 0.85 +2 × 0.85 ×0.15 × 0.15
    7·2 answers
  • Point S is located on RT so that RS/ST = 1/4. What are the coordinates of point S?
    11·1 answer
  • I need help on number 23 and explain please for brainiest answer !!
    6·2 answers
  • Paul needs to find 310% of 72%. which expression should he use?
    7·1 answer
  • ANSWER NOW! Erica saw a skateboard on sale for $39.95. The original price of the skateboard
    10·1 answer
  • What is the Hcf of 5, 6 and 7.
    7·1 answer
  • How can you write the expressiHow can you write the expression 7(b – 2) in words?
    11·2 answers
  • Emily is training for a 10K race. On day one, she runs for 20 minutes. On day two, she runs for 30 minutes. On day three, she ru
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!