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
Olenka [21]
3 years ago
13

Explain why solving (2/5)c = (8/9) by multiplying both sides by (5/2) is the same as solving it by dividing both sides by (2/5)

Mathematics
1 answer:
Aleks04 [339]3 years ago
6 0
It's known as keep change and flip. Keep the first fraction, change the division sign into a multiplication sign, and flip the decimal to its reciprocal (switch the numerator and denominator). This is used when dividing fractions. We can even check to see if they have to same output.
2/5 × 5/2 = 1
8/9 × 5/2 = 40/18
2/5 ÷ 2/5 = 1
8/9 ÷ 2/5 = 40/18
Tell me if this helps, I can explain more if needed.
You might be interested in
An above-ground swimming pool is leaking. The function h(d) = 48 - 1. 5d gives the height of the water in the pool in inches d d
MAXImum [283]

Answer:

A) 48 in : initial height of the water

B) 40.5 in : height of the water after 5 days

C) 32 days

D) Yes, should be restricted.

Domain: 0 ≤ d ≤ 32

Step-by-step explanation:

h(d) = 48 - 1. 5d

A)  

h(0) = 48 - 1. 5(0)=48

48 in is the initial height of the water

B)

h(5) = 48 - 1. 5(5)=48-7.5=40.5

40.5 in is the height of the water after 5 days

C) when the pool is empty, h = 0.

So set the equation to zero and solve for d.

\implies 48 - 1. 5d=0\\\\\implies 1.5d=48\\\\\implies d=\dfrac{48}{1.5}\\\\\implies d=32

D) Yes, the domain should be restricted because when d > 32, h < 0 and the height of the water in the pool cannot be negative

Domain: 0 ≤ d ≤ 32

5 0
2 years ago
A bottle of fruit juice holds 1.89L. If Shakira bought almost 6L of fruit juice, how many bottles did she buy
ser-zykov [4K]
6 divided by 1.89= 3.17 so you can say she bought 3 bottles of fruit juice 
8 0
3 years ago
Anybody know how to do this??
jolli1 [7]
The answer is A or the first on you might say, hopes this helps ya!
4 0
3 years ago
Question #1<img src="https://tex.z-dn.net/?f=6%5Cgeq%20-4x-2" id="TexFormula1" title="6\geq -4x-2" alt="6\geq -4x-2" align="absm
natima [27]
X is greater than or equal to -2
5 0
3 years ago
Question...Sleep is known to affect student grades. Kirsten is conducting a study in a local high school using two treatments on
OLga [1]

Answer:

c

Step-by-step explanation:

a third party group in which no naps occur

4 0
3 years ago
Other questions:
  • PLEASE HELPPPPP.
    9·1 answer
  • suppose 255,113 people live in a city is it reasonable to say that about 300,00 live in the city? use the number line to help yo
    15·1 answer
  • HELP ME PLEASE HURRY...​
    13·2 answers
  • Find the area of an equilateral triangle (regular 3 Gon) with the given measurement 9 in perimeter a=SQ.in
    8·1 answer
  • 6th grade math I mark as brainliest
    7·2 answers
  • A total of 525 records of a hospital were reviewed and 175 of the patients had a heart problem, 150 a respiratory problem, 125 s
    6·1 answer
  • Find the slope of the graph
    6·2 answers
  • Are the triangles congruent?
    10·1 answer
  • Please help asap will give lots of points
    9·2 answers
  • 2. The wind blows the pinwheel below clockwise 180 degrees. What positions would the ribbon labeled A end up in after the wind b
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!