3 years ago

Are the ratios 2.5:3.5 and 5:7 proportional? explain

1 answer:

3 0

$\frac{2.5}{3.5}=\frac{2.5 \times 2}{3.5 \times 2}=\frac{5}{7}$

They are the same fraction, so they are proportional.

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Burka [1]

$\sqrt{ \frac{4 x^{2} }{3y} } = \sqrt{ \frac{2^{2} x^{2}}{3y} } = \frac{ \sqrt{2^{2} x^{2}} }{ \sqrt{3y} } = \frac{2x}{ \sqrt{3y}}$

4 0

3 years ago

dem82 [27]

Hello from MrBillDoesMath!

Answer:

x = 0, +\-3

Discussion:

x^3 = 9x => subtract 9x from both sides

x^3 - 9x = 0 => factor x from both terms

x(x^2-9) = 0 => x = 0 or x^2 - 9 = 0

x = 0, +\-3

Thank you,

MrB

8 0

3 years ago

o-na [289]

Answer:

Step-by-step explanation:

7 0

3 years ago

Luba_88 [7]

Answer:

see below

Step-by-step explanation:

We can just add up all of these fractions:

2 1/8 + 7/8 = 2 8/8 = 3

8 5/8 + 4/8 = 8 9/8 = 9 1/8

3 + 9 1/8 = $12\frac{1}{8}$

4 0

3 years ago

ankoles [38]

Answer:a
explanation:
6(1) cm2
6 cm 2

good luck!

7 0

2 years ago