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
lukranit [14]
3 years ago
13

2/5 + k/4 = 9/10 (solve with work)

Mathematics
2 answers:
Sliva [168]3 years ago
8 0

Remark

The easiest way to solve this is to change the fractions into decimals.

2/5 = 0.4

9/10 = 0.9

k/4 = 1/4 k = 0.25 k

0.4 + 0.25k = 0.9 Subtract 0.4 from both sides.

0.25k = 0.9 - 0.4

0.25k = 0.5 Divide by 0.25

k = 0.5 / 0.25 Use your calculator for this if you don't know how to do it.

k = 2 <<<< answer.


Alla [95]3 years ago
6 0

The LCD of 2/5 + k/4 = 9/10 is 20. Applying this LCD, we get:


8 + 5k = 18. Subtracting 8 from both sides: 5k = 10. Then k = 10/5, or k = 2.

You might be interested in
Question 9 (3 points)
Lilit [14]

Answer:

Precambrian period

Step-by-step explanation:

Since the Great oxidation period = 2.4 Billion years ago era = Precambrian period.

Micro-fossils attributed to cyanobacteria are abundant during the Proterozoic that came later 2,5 billion years ago and ended 540 million years ago,

7 0
3 years ago
We're doing writing equations with Point &amp; Slope<br> through: (5,1) slope= 4/5<br> good luck lol
astraxan [27]

Answer:

y = 0.8x - 3

Step-by-step explanation:

See attached screenshot solution using Desmos

7 0
3 years ago
W - 5,129 = 2,329<br><br>A. w = 7,468<br><br>B. w = 7,558<br><br>C. w = 7,458
Shkiper50 [21]
W−5129=2329

Step 1: Add 5129 to both sides.
(5129+2339)

w−5129+5129=2329+5129 =

w=7458

7 0
3 years ago
Can someone help pls
Roman55 [17]

Answer:

That means the missing side length is 15

Step-by-step explanation:

We use the Pythagorean theorem to find the hypotenuse. The hypotenuse for this triangle is 17. The equation for the Pythagorean theorem is a^2 + b^2 = c^2. Our equation is x^2+64 = 289. We can now subtract 64 from both sides and get 225. The square root of 225 will be 15.

8 0
2 years ago
Read 2 more answers
1 over 4a = 2 over 3. Which of the following equals a in this equation?
Margaret [11]
The answer for a is 8/3. Hope it help!
3 0
3 years ago
Other questions:
  • 79% of 67 miles is what?
    13·2 answers
  • Please help me thank you I’ll mark Brainly
    12·1 answer
  • NEED HELP ASSAP 100 POINTS WILLL GIVE BRAINLIEST1Give me an example of how supply or demand affects price in the real world. 2Ho
    7·1 answer
  • Production managers on an assembly line must monitor the output to be sure that the level of defective products remains small. T
    7·1 answer
  • 0.5 x (5-5) + (0.4) =
    11·2 answers
  • What is the slope of a line that contains the points (-2,2) and (3,4)
    9·2 answers
  • you purchased 7 3/4 pounds of candy for you party you are expecting to have 10 guest attendyour party..How much candy will each
    5·1 answer
  • At Pizza Company, Lee made 50 pizzas one day. There were 110 pizzas sold that day. What fraction of the pizzas did Lee make? Sim
    5·1 answer
  • An aircraft factory manufactures airplane engines. The unit C(the cost in dollars to make each airplane engine) depends on the n
    8·1 answer
  • This year, Ryan watched 55 movies. He thought that 33 of them were very good. Of the movies he watched, what percentage did he t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!