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
vodka [1.7K]
3 years ago
13

2/5y - 4 + 7 - 9/10y with steps

Mathematics
1 answer:
Lesechka [4]3 years ago
3 0

Let's simplify step-by-step.

2/ 5 y−4+7− 9 /10 y = 2 /5 y+−4+7+ −9 /10 y

Combine Like Terms:  = 2 /5 y+−4+7+ −9 /10 y

(2 /5 y+ −9 /10 y)+(−4+7) = −1 /2 y+3

Answer:  = −1 /2 y+3

Hope I could help! :)

You might be interested in
Determine if side lengths 24, 21.5, and 55.5 make a triangle. If so, classify the type of triangle it creates.
valentina_108 [34]

Answer

b

Step-by-step explanation:

8 0
3 years ago
If PR = 5x – 3 and QS = 3x – 5 and QS == PR, what are the length of the<br> diagonals?
OleMash [197]

Answer:

Step-by-step explanation:

5x - 3 = 2(3x - 5)

5x - 3 = 6x - 10

6x - 5x = 10 - 3

x = 7

QS = 3(7) - 5 = 16 units

PR = 5 × 7 - 3 = 32 units

8 0
2 years ago
Does anyone have answers for the Unit 6-Lesson 9: Rational Expressions and Functions Unit Test? I really need them, and will giv
GalinKa [24]

Answer:

on edge?

Step-by-step explanation:

5 0
3 years ago
Which inequality has the solution set shown on the graph?
professor190 [17]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
How to solve this ? I am not sure pls if you know the answer answer it I really neeed it for marks
xz_007 [3.2K]

Answer:

L.S = R.S ⇒ Proved down

Step-by-step explanation:

Let us revise some rules in trigonometry

  1. sin²α + cos²α = 1
  2. sin2α = 2 sin α cosα
  3. cscα = 1/sinα

To solve the question let us find the simplest form of the right side and the left side, then show that they are equal

∵ L.S = csc2α + 1

→ By using the 3rd rule above

∴ L.S = \frac{1}{sin2\alpha} + 1

→ Change 1 to \frac{sin2\alpha}{sin2\alpha}

∴ L.S = \frac{1}{sin2\alpha} + \frac{sin2\alpha}{sin2\alpha}

→ The denominators are equal, then add the numerators

∴ L.S = \frac{1+sin2\alpha}{sin2\alpha}

∵ R. S = \frac{(sin\alpha+cos\alpha)^{2} }{sin2\alpha}

∵ (sinα + cosα)² = sin²α + 2 sinα cosα + cos²α

∴ (sinα + cosα)² = sin²α + cos²α + 2 sinα cosα

→ By using the 1st rule above, equate sin²α + cos²α by 1

∴ (sinα + cosα)² = 1 + 2 sinα cosα

→ By using the 2nd rule above, equate 2 sinα cosα by sin2α

∴ (sinα + cosα)² = 1 + sin2α

→ Substitute it in the R.S above

∴ R. S = \frac{1+sin2\alpha}{sin2\alpha}

∵ L.S = R.S

∴ csc 2α + 1 = \frac{(sin\alpha+cos\alpha)^{2} }{sin2\alpha}

4 0
3 years ago
Other questions:
  • Which points are generated by the function y = -5x + 2? Check all that apply. (2, 8) (2, -8) (13, 3) (3, -13)
    6·2 answers
  • Does 4 13/20 terminate or repeat
    15·1 answer
  • james bond rescues the queen, and saves £1,000,000 in gold bars. as a reward the queen gives him 15% of the gold. how much has h
    10·1 answer
  • A type of Bamboo holds the Guinness World Records for the fastest growing plant. It can grow up to 91 cm per day. How fast in in
    10·1 answer
  • Which is the graph of f(x) = (x – 1)(x + 4)?
    7·2 answers
  • Find the missing side lengths​
    11·1 answer
  • CAN SOMEONE PLEASE HELP ME!! THANK YOU
    15·2 answers
  • The absolute value of a number is 16. What is this number? Select all that apply.
    10·2 answers
  • The slope of the tangent line for the curve r=2 cos(3 theta) where theta = pi/6 is.
    8·1 answer
  • Please help!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!