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
almond37 [142]
3 years ago
15

-1/2 + ( 3/4 x 4/9)

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
5 0

Answer:

-1/6

Step-by-step explanation:

-1/2 + ( 3/4 x 4/9)

PEMDAS says parentheses first

Rearranging the fractions

-1/2 + ( 3/9 x 4/4)

-1/2 + (1/3*1)

-1/2 + 1/3

Getting a common denominator of 6

-1/2 *3/3 + 1/3 *2/2

-3/6+2/6

-1/6

You might be interested in
Bill wants to rent a car. Rental company a charges $35 per day plus $.10 per mile driven. Rental company B charges $25 per day p
svp [43]
According to my calculations, after 200 miles, the prices will be equal.
5 0
3 years ago
Angela enjoys swimming and often swims at a steady pace to burn calories. At this pace, Angela can swim 1,700 meters in 40 minut
Alexxx [7]
I think the answer is 

42.5 

not sure but hope this helps

6 0
3 years ago
Read 2 more answers
Sin2x-sin2xcos2x=sin4x
yaroslaw [1]

It looks like the given equation is

sin(2x) - sin(2x) cos(2x) = sin(4x)

Recall the double angle identity for sine:

sin(2x) = 2 sin(x) cos(x)

which lets us rewrite the equation as

sin(2x) - sin(2x) cos(2x) = 2 sin(2x) cos(2x)

Move everything over to one side and factorize:

sin(2x) - sin(2x) cos(2x) - 2 sin(2x) cos(2x) = 0

sin(2x) - 3 sin(2x) cos(2x) = 0

sin(2x) (1 - 3 cos(2x)) = 0

Then we have two families of solutions,

sin(2x) = 0   or   1 - 3 cos(2x) = 0

sin(2x) = 0   or   cos(2x) = 1/3

[2x = arcsin(0) + 2nπ   or   2x = π - arcsin(0) + 2nπ]

… … …   or   [2x = arccos(1/3) + 2nπ   or   2x = -arccos(1/3) + 2nπ]

(where n is any integer)

[2x = 2nπ   or   2x = π + 2nπ]

… … …   or   [2x = arccos(1/3) + 2nπ   or   2x = -arccos(1/3) + 2nπ]

[x = nπ   or   x = π/2 + nπ]

… … …   or   [x = 1/2 arccos(1/3) + nπ   or   x = -1/2 arccos(1/3) + nπ]

7 0
3 years ago
4x^2 = 92 + 7x solve the equation using the guadratic formula, show all work
katovenus [111]
4x^2=92+7x\ \ \ \ |-4x^2\\\\-4x^2+7x+92=0\\\\a=-4;\ b=7;\ c=92\\\\b^2-4ac=7^2-4\cdot(-4)\cdot92=49+1472=1521\\\\\sqrt{b^2-4ac}=\sqrt{1521}=39\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-7-39}{2\cdot(-4)}=\dfrac{-46}{-8}=\dfrac{23}{4}\\\\x_2=\dfrac{-7+39}{2\cdot(-4)}=\dfrac{32}{-8}=-4


\text{Answer:}\ A.\ \left\{\dfrac{23}{4};\ -4\right\}
4 0
3 years ago
Oceanside Bike Rental Shop charges a $15 flat fee plus $6 an hour for renting a bike. Dan paid $39 to rent a bike. Which equatio
Eva8 [605]

Answer:

c. 6x + 15 = 39

Step-by-step explanation:

hope this helps

8 0
3 years ago
Other questions:
  • Find the slope of a line parallel to this given line
    12·1 answer
  • Which number is a rational number???
    12·1 answer
  • HELP PLEASE I DONT UNDERSTAND
    6·1 answer
  • The amount of money Tricia pays for rent each month is modeled by the equation r = $20d + 100. Tricia's roomate charges a flat u
    14·2 answers
  • 2^(x-4) = 4a^(x-6) what is the value of x? ​
    14·1 answer
  • Set up an en equation and use it to solve for x
    6·2 answers
  • 1. The measures of the angles of RST are in the ratio 2:4:9. What are the measure of the angles
    15·1 answer
  • Math problem I need help with
    8·2 answers
  • Need help understanding this
    10·1 answer
  • Can someone help me on this pls? It’s urgent, so ASAP (it’s geometry)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!