All categories

3 years ago

Don’t mind my computer but can someone help me pls!!!

Mathematics

1 answer:

mel-nik [20]3 years ago

5 0

I'm pretty sure the answer is the top right one because it looks really messed up. i mean, mi/hr*min doesn't equal mi, but im not too sure about the conversion part.

You might be interested in

What is the graph of y^2/16+x^2/9=1

Anna71 [15]

Answer:

is c

Step-by-step explanation:

use math way if you have any doubts

4 0

3 years ago

A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in a tank. A ray of li

frutty [35]

Answer:

$27.26^{\circ}$

Step-by-step explanation:

We are given that

$n_g=1.57$

$n_w=1.33$

Angle of incidence,i=37.5 degree

We have to find the angle of refraction into the water made by ray wit the normal to the surface.

Refractive index of water, $n_a=1$

By Snell's law

$\frac{n_g}{n_a}=\frac{sin i}{sin r}$

$sin r=\frac{n_a sini}{n_g}=\frac{1\times sin37.5}{1.57}$

$sin r=0.388$

$r=sin^{-1}(0.388)=22.83^{\circ}$

Again for glass water surface

Using Snell's law

Angle of incidence,i'=22.83 degree

$\frac{n_w}{n_g}=\frac{sin i}{sin r}$

$\frac{1.33}{1.57}=\frac{sin22.83}{sin r'}$

$sin r'=\frac{1.57sin(22.83)}{1.33}=0.458$

$r'=sin^{-1}(0.458)=27.26^{\circ}$

8 0

3 years ago

A recipe calls for an oven to be preheated to 400 °F. What is the approximate temperature of the preheated oven in Celsius degre

Nutka1998 [239]

Answer:

204 4/9 °C

Step-by-step explanation:

Put the number in the formula and do the arithmetic.

°C = (5/9)(400 -32) = 5/9(368) = 204 4/9

The temperature in °C is 204 4/9.

_____

Most likely, it would be written as 205 °C in a metric version of the recipe.

6 0

4 years ago

Read 2 more answers

The ratio of Sam's age to Hank's age is 5 to 3. If the sum of their ages is 24, how old is Hank?

maxonik [38]

Hank is 9 years old. Explanation - What I did is I made a chart, and the categories were Sam and Hank. Then all I did was add 5 to Sam's age and added 3 to Hank's age. I repeated this until the sum of the ages equaled 24.

7 0

3 years ago

Read 2 more answers

Solve the equation.

Gekata [30.6K]

Answer:

-145.436

Step-by-step explanation:

B + 116.49=-28.946

B + 116.49–116.49 =28.946 —116.49

When simplified its - 145.436

7 0

3 years ago