All categories

3 years ago

Solve each proportion. 1) 4/7 =2/n

Mathematics

1 answer:

Ivan3 years ago

7 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

$\frac{4}{7} = \frac{2}{n} \\$

Inverse both sides

$\frac{7}{4} = \frac{n}{2} \\$

$\frac{n}{2} = \frac{7}{4} \\$

Multiply sides by 2

$2 \times \frac{n}{2} = 2 \times \frac{7}{4} \\$

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

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

You might be interested in

The formula κ(x)= f′′(x) 1+f′(x)23/2 expresses the curvature of a twice-differentiable plane curve as a function of x. Use thi

Katyanochek1 [597]

Answer:

K(x) = $\frac{-10}{[1 + (-10x)^2]^{\frac{3}{2} } }$ ( curvature function)

Step-by-step explanation:

considering the Given function

F(x) = $-5x^2$

first Determine the value of F'(x)

F'(x) = $\frac{d(-5x^2)}{dy}$

F'(x) = -10x

next we Determine the value of F"(x)

F"(x) = $\frac{d(-10x)}{dy}$

F" (x) = -10

To find the curvature function we have to insert the values above into the given formula

K(x) $= \frac{|f"(x)|}{[1 +( f'(x)^2)]^{\frac{3}{2} } }$

K(x) = $\frac{-10}{[1 + (-10x)^2]^{\frac{3}{2} } }$ ( curvature function)

6 0

4 years ago

Sam and Diane each open a savings account at the same time. Sam invests $4,500 in an account yielding

Ymorist [56]

Answer:

Step-by-step explanation:

Download pdf

8 0

3 years ago

Emath has a stockpile of 1850 algebra textbooks. They are being purchased at a steady rate of 120 books per week. Write a linear

labwork [276]

Answer: b = 1850 - 120w

Step-by-step explanation:

Let w represent the number of weeks for which the books are purchased.

They are being purchased at a steady rate of 120 books per week. This means that the number of books purchased after w weeks would be 120w.

The total number of algebra textbooks that she had initially is 1850

If b represents the number of books left after w-weeks of sales, then the linear function that models the number of books left after w weeks would be

b = 1850 - 120w

8 0

3 years ago

The top of the Boulder Dam has an angle of elevation of 1.2 radians from a point on the Colorado River. Measuring the angle of e

Nana76 [90]

Answer:

382.925 feets

Step-by-step explanation:

The solution diagram is attached below :

Converting radian measurement to degree :

radian angle * 180/π = degree angle

1.2 * 180/π = 68.755°

0.9 * 180/π = 51.566°

Height of dam is h:

Using trigonometry :

Tan θ = opposite / Adjacent

Tan 68.755° = h / x

h = x Tan 68.755° - - - (1)

Tan 51.566° = h / (155+x)

h = (155+x) tan 51.566° - - - (2)

Equate (1) and (2)

x Tan 68.755 = (155+x) Tan 51.566

x Tan 68.755 = 155tan 51.566 + x tan 51.566

x Tan 68.755 = 195.32311 + x Tan 51.566

x Tan 68.755 - x Tan 51.566 = 195.32311

x(tan 68.755 - tan 51.566) = 195.32311

x * 1.3120110 = 195.32311

1.3120110x = 195.32311

x = 195.32311 / 1.3120110

x = 148.87307

Using :

h = x Tan 68.755

h = 148.87307 * tan(68.755)

h = 382.92539

h = 382.925 feets

5 0

3 years ago

Three consecutive odf integers have a sum of 39

Anestetic [448]

11, 13, 15
...............

7 0

4 years ago

Read 2 more answers