All categories

3 years ago

1/5 of what equals 4?

Mathematics

2 answers:

Oksanka [162]3 years ago

8 0

Answer:

Step-by-step explanation:

Multiply the denominator by 4.

MaRussiya [10]3 years ago

5 0

Answer:

Step-by-step explanation:

20/5 = 4

hope that helps:)

You might be interested in

Find the first three terms of the series represented by the formula 3(- 2)(n - 1).

enyata [817]

Answer:

0, - 6, - 12

Step-by-step explanation:

To find the first 3 terms, substitute n = 1, 2, 3 into the formula

a₁ = 3(- 2)(1 - 1) = 3 × - 2 × 0 = 0

a₂ = 3(- 2)(2 - 1) = 3 × - 2 × 1 = - 6

a₃ = 3(- 2)(3 - 1) = 3 × - 2 × 2 = - 12

First 3 terms are 0, - 6, - 12

8 0

3 years ago

Find all values of x which make this inequality true.<br> | x + 11 | ≥ 2

mote1985 [20]

Answer:

There are infinite solutions of x such as 0,1,2 ...

i.e for all x≥0 given inequality is true.

i.e x€[0,∞)

3 0

2 years ago

What is the constant of variation, k, of the line y = kx through (3,18) and (5,30)?

Fudgin [204]

Y is 18 so 18=3k
k=18/3
k=6 for (3,18)
for (5,30)let's see
y=30
30=5k
k=30/5
k=6

5 0

3 years ago

Read 2 more answers

Write the equation of the black line in slope-intercept form.

gavmur [86]

Y = x + 4
Slope = 1
Y-intercept = 4

7 0

3 years ago

4. Which of the following lines is perpendicular to y = -2X + 8?

Alenkinab [10]

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

That is to say:

$m_ {1} * m_ {2} = - 1$

We have the following equation:

$y = -2x + 8$

So:

$m_ {1} = - 2$

Thus:

$m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- 2}\\m = \frac {1}{2}$

Thus, a line perpendicular to the given line must have slope $m = \frac {1} {2}.$

Option A:

$x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4$

It is not perpendicular!

Option B:

$x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3$

If it is perpendicular!

Option C:

$2x + y = 4\\y = -2x + 4$

It is not perpendicular!

Option D:

$2x-y = 1\\y = 2x-1$

It is not perpendicular!

The correct option is option B

ANswer:

Option B

5 0

3 years ago