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3 years ago

Do the ratios 5/18 and 1/2 form a proportion?

Mathematics

1 answer:

Wewaii [24]3 years ago

5 0

Answer:

No they do not.

5/18 ≠ 1/2

If it did, it would be 9/18

Hope that helps!

Step-by-step explanation:

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Find the least common multiple.

nikklg [1K]

The least common multiple is 3

8 0

3 years ago

Solve −2x2 +3x − 9 = 0.

Dmitry_Shevchenko [17]

I assume you are asking to solve:

-2x^2 + 3x - 9 = 0

So first, this equation does not have real roots.

It only has 2 complex roots.

The roots are:

3/4 * (1-i√7) and 3/4 * (1+i√7)

8 0

3 years ago

How to i expand this ? x3 (3x - 5)

Nikitich [7]

Use the distributive formula

a(b - c) = ab - ac

$x^3(3x - 5) = \boxed{\bf{3x^4 - 5x^3}}$

5 0

3 years ago

A snail moves at the speed of 76 millimeters per minute. Nancy writes the following steps to calculate this speed in centimeters

gizmo_the_mogwai [7]

Answer:

The step 3 is incorrect in the conversion, is not necessary

Step-by-step explanation:

we have

The speed is $76\frac{mm}{min}$

we know that

1 mm=0.1 cm

1 min=1/60 h

$76\frac{mm}{min}=76(0.1)/(1/60)=76(0.1)(60)=456\frac{cm}{h}$

step 1

Multiply 76 by 0.1

$76(0.1)=7.6$

The step 1 is correct

step 2

Multiply the result obtained in step 1 by 60.

$7.6(60)=456$

The step 2 is correct

step 3

Multiply the result obtained in step 2 by 60

This step is not correct

therefore

The step 3 is incorrect in the conversion, is not necessary

4 0

3 years ago

Describe the relationship between n and 4 that will make the value of the expression 7 x n/4 greater than 7

Zarrin [17]

If n>4 then n/4>7
Hope I helped :)

8 0

3 years ago

Read 2 more answers