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3 years ago

The fraction 4/5 is equivalent to which of the following decimals?

Mathematics

2 answers:

Sophie [7]3 years ago

6 0

Answer:

0.8(Decimal Form) and 80%(Percent Form)

Step-by-step explanation:

Anarel [89]3 years ago

3 0

Well, since 1/5 = 0.20 (or 0.2) since 100 div by 5 = 20, the answer to this question would be 0.80 ! Aka 0.8 (the second answer) since 20 x 4 = 80!
(Hope this helped ^^)

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Determine whether 6/7 and 30/35 are equivalent

aleksandr82 [10.1K]

It is equivalent I believe...hope this helps!

3 0

3 years ago

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Write 9 41/80 as a decimal

jolli1 [7]

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3 years ago

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu

IgorC [24]

Answer:

$\frac{1}{9}$

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

$\sqrt{xy}$

The Arithmetic mean is

$\frac{x + y}{2}$

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

$\frac{ \sqrt{xy} }{ \frac{x + y}{2} } = \frac{3}{5}$

We can write the equation;

$\sqrt{xy} = 3$

$xy = 9 - - - (2)$

and

$\frac{x + y}{2} = 5$

$x + y = 10 - - - (2)$

Make y the subject in equation 2

$y = 10 - x - - - (3)$

Put equation 3 in 1

$x(10 - x) = 9$

$10x - {x}^{2} = 9$

${x}^{2} - 10x + 9 = 0$

$(x - 9)(x - 1) = 0$

$x =1 \: or \: 9$

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

$\frac{1}{9}$

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3 years ago

Solve each pair of simultaneous equations by substitution method

WARRIOR [948]

Answer:

x = 1 y = -4

Step-by-step explanation:

- Plug the value of y into the other equation.

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x + 3(-4x) = -11

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-11x = -11

x = 1

- Now substitute the value of x into any equation.

y = -4x

y = -4(1)

y = -4

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2 years ago

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dimaraw [331]

Answer:

i hope this helps, i got x + 5 ≤ 13 as ur equation

Step-by-step explanation:

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2 years ago