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
gavmur [86]
2 years ago
14

Please help find the value of the expression and show work thank you

Mathematics
2 answers:
Rama09 [41]2 years ago
8 0
First we need to find the least common multiple of the denominators.

40 is is divisible by 8, 5, and 4, so we will use it as our common denominator.

Then we need to multiply the numerators by the same amount we had to multiply each denominator by to get 40.

For example, 8 is the denominator of the first fraction. To make it 40, we multiply by 5. We need to also multiply the numerator 3 by the same 5 to keep the fraction the same. So the 3 becomes 3*5 = 15.

The numerators in order after doing this are 15, -32, -15, and 50. Now add these add.

15-32-15+50 = 18.

Put this sum over the common denominator to get the final answer.

18/40 which can be simplified to 9/20.

The answer is 9/20





yanalaym [24]2 years ago
8 0
3/8+(-4/5)+(-3/8)+5/4

Remember a positive and a negative will be negative.

=3/8-4/5-3/8+5/4

Now you need a common denominator for all of them, but if you notice that 3/8-3/8=0, you are left with:
=-4/5+5/4

5 and 4 both go into 20. So your common denominator is 20. 5 goes in to 20 four times (so 4*4=16 =16/20).
4 goes in to 20 five times (so 5*5=25/20).

Remember 4/5 was negative:
=-16/20+25/20
=9/20

9 and 20 do not have any common factors, so this is the answer.

Hope this helps!! :)
You might be interested in
a rectangular has a perimeter of 50 centimeters if the width of the rectangular is 10 centimeters what is its length
kogti [31]
10+10=20 50-20=30/2= 15 cm for length
5 0
2 years ago
−3n+2≥−4n−3 solution
nydimaria [60]

Answer:

n≥-5

Step-by-step explanation:

-3n+2≥-4n-3

add 4n on both sides

n+2≥-3

subtract 2 on both sides

n≥-5

4 0
3 years ago
Read 2 more answers
Haley draws one card from a standard deck of 52 playing cards. She draws one card, returns it to the deck, shuffles the deck, an
ipn [44]

Answer:

no

Step-by-step explanation:

because of the square she drawn

3 0
3 years ago
Find xy if x + y=3, x^2 + y^2 = 5
Vesna [10]

Answer:

mark me

Step-by-step explanation:

x+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST

8 0
2 years ago
Classify this triangle by its sides.
ruslelena [56]

Step-by-step explanation:

The answer is scalene triangle

7 0
2 years ago
Read 2 more answers
Other questions:
  • Given the sequence -3, 9, -27, 81, -243, ..., find the recursive formula.
    14·1 answer
  • Write the sentence as an algebraic equation. The sum of 5 and a number equals 14.
    13·1 answer
  • What height on the wall will a 15 foot ladder reach if it is placed 3.5 feet from the base of the wall...???
    14·2 answers
  • 432 divided by the difference between 279 and 63
    14·2 answers
  • a vegetarian sandwich is in the aproximate shape of a cone. the height of the sandwich is 6 inches and the base diameter is 3.5
    14·1 answer
  • Simplify -62 ÷ 12 - 2(-7).
    15·2 answers
  • 1. Giles thinks that -5x²(3x - 4) simplifies to 15x² + 20x². Explain what mistakes he made. What is the
    10·1 answer
  • Find the sum of 10 + 5i and its complex conjugate.
    13·1 answer
  • Will give brainliest for correct answer
    6·1 answer
  • Help will give brainiliest if correct
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!