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Molodets [167]
3 years ago
12

If 4/5 X a= 2/5, what is a?

Mathematics
2 answers:
Katena32 [7]3 years ago
5 0
The answer is a=1
                          --
                          2
I really hope this helps

AURORKA [14]3 years ago
3 0
A is 1

any variable with nothing
in front of it is always 1
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Lucy have $6400 if she invests<br> $1200 at 15% interest<br> compounded quarterly?
svet-max [94.6K]

Answer:

  11.4 years

Step-by-step explanation:

We assume you want to know the time it takes for Lucy's investment of $1200 to have a value of $6400. The compound interest formula is good for finding that.

  FV = P(1 +r/n)^(nt)

for principal P invested at rate r per year for t years, compounded n times per year. We want to find t such that ...

  6400 = 1200(1 +0.15/4)^(4t)

  16/3 = 1.0375^(4t) . . . . divide by 1200

  log(16/3) = 4t·log(1.0375) . . . . take logarithms

  t = log(16/3)/(4·log(1.0375)) ≈ 11.4

It will take about 11.4 years for Lucy's investment value to be $6400.

8 0
3 years ago
See attachment for problem
Effectus [21]

The liters in the tank when it is filled to a height of 3.70 is  5,580 liters

The liters that needs to be added to 100% capacity is 480 liters

<h3>What is the volume?</h3>

A right circular cone is a three dimensional object has a flat circular base that tapers to a vertex. The volume of a right circular cone is the amount of space in the right circular cone.

Volume of a cone = 1/3(πr²h)

Where:

  • π = pi = 3.14
  • r = radius
  • h = height

Volume of the right circular cone when its filled to a height of 3.70 = 1/3 x 3.14 x 3.70 x 1.20² = 5.58 m³

5.58 x 1000 = 5,580 liters

Volume of the right circular cone when it is full =  1/3 x 3.14 x 4 x 1.20² = 6.03  m³

6.03 x 1000 = 6030 liters

Liters that needs to be added to 100% capacity =  6030 liters - 5,580 liters  = 480 liters

To learn more about the volume of a cone, please check: brainly.com/question/13705125

#SPJ1

7 0
1 year ago
Anyone know answer to this
nydimaria [60]

The answer is 1

Step-by-step explanation:

look at the line going up and down

6 0
3 years ago
Read 2 more answers
You roll a six sided die how likely is it that you roll a number greater than or equal to 1
Grace [21]

Answer:

6/6

Step-by-step explanation:

3 0
3 years ago
What plus 18 equals 45?
natali 33 [55]
Okay to find what 18+?=45 just subtract 18 from 45. ANSWER: 27
8 0
3 years ago
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