Ask question

Ask question

All categories

2 years ago

7

How do you do 20 / 4/5

2 answers:

Flauer [41]2 years ago

4 0

What do you mean by this

tamaranim1 [39]2 years ago

4 0

Answer:

25

Step-by-step explanation:

you can write this equation as 20 ÷ $\frac{4}{5}$

so change the division sign to multiplication by flipping the divisor ( $\frac{4}{5}$ )

this means you now have 20 x $\frac{5}{4}$

so you can simplify 20 and 4, this makes the 4 into a 1 and the 20 into a 5

you now have 5 x $\frac{5}{1}$

this is the same thing as 5 x 5

multiply it, and you can see that the answer is 25

You might be interested in

Does the table show a direct proportional relationship? If so, what is the constant of proportionality?

lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality ( $k$ ) is described by the following expression:

$k = \frac{y}{x}$ (1)

Where:

$x$ - Input.

$y$ - Output.

If we know that $(x_{1}, y_{1}) = (13, 45.5)$ , $(x_{2}, y_{2}) = (14, 49)$ and $(x_{3}, y_{3}) = (15, 52.5)$ , then the constants of proportionalities of each ordered pair are, respectively:

$k_{1} = \frac{y_{1}}{x_{1}}$

$k_{1} = \frac{45.5}{13}$

$k_{1} = \frac{7}{2}$

$k_{2} = \frac{y_2}{x_2}$

$k_{2} = \frac{49}{14}$

$k_{2} = \frac{7}{2}$

$k_{3} = \frac{y_{3}}{x_{3}}$

$k_{3} = \frac{52.5}{15}$

$k_{3} = \frac{7}{2}$

Since $k_{1} = k_{2} = k_{3}$ , the constant of proportionality is 3.5.

8 0

2 years ago

I need help with this problem plzzz

Effectus [21]

Not sure sorry but you can. Try searching on google or yahoo answers

6 0

2 years ago

lapo4ka [179]

It’s not 100 points it’s only five points

5 0

2 years ago

Simplify the expression by using a double-angle formula or a half-angle formula. (a) 2 tan(5°) 1 − tan2(5°)

antoniya [11.8K]

The question is related to trigonometry and we have to use the formula of double angle .

Here we use double angle formula of tangent function which is

$tan(2x) = \frac{2tan(x)}{1-tan^2(x)}$

Given expression is

$\frac{2tan (5 \degree)}{1-tan^2(5 \degree)}$

Comparing it with double angle formula, we will get x = 5

SO the required expression is equal to

$\frac{2tan (5 \degree)}{1-tan^2(5 \degree)} =tan(2*5 )$

$\frac{2tan (5 \degree)}{1-tan^2(5 \degree)} =tan(10 )$

So the answer is tan(10) .

6 0

3 years ago

HELP PLEASE!<br>Find the value of x that makes m∥n.

Helen [10]

Answer:

Value of x = 10

4 0

3 years ago