All categories

3 years ago

Which term is used to describe how light is reflected from a minerals surface

Mathematics

1 answer:

pantera1 [17]3 years ago

5 0

Answer:

Luster describes the reflection of light off a mineral's surface. Mineralogists have special terms to describe luster. Minerals that are opaque and shiny, such as pyrite, have a metallic luster.

Step-by-step explanation:

You might be interested in

Can someone help me with this

jarptica [38.1K]

The answer is:

x=-8

Because:

If you pick a number(-8) to fill in the equation written below

5x+20+5x=5x-20

After applying the -8 to x you get

-40+20-40=-40-20

When you simply the both sides you get

-60=-60

And that’s right -60 is equal to -60!

5 0

4 years ago

Read 2 more answers

Solve the triangle give the measure of y

pishuonlain [190]

Given:

In triangle $BGU,BG=x,GU=7,BU=y,m\angle U=90^\circ,m\angle B=44^\circ$ .

To find:

The value of y.

Solution:

In a right angle triangle,

$\tan \theta=\dfrac{Perpendicular}{Base}$

In triangle BGU,

$\tan B=\dfrac{GU}{BU}$

$\tan 44^\circ=\dfrac{7}{y}$

$0.966=\dfrac{7}{y}$

Isolating y, we get

$y=\dfrac{7}{0.966}$

$y=7.2463$

$y\approx 7.2$

Therefore, the correct option is A.

4 0

3 years ago

Anne owns a used car lot and in order to get cars to sell, she buys used cars at an

azamat

Answer:

It would be 2,000x+200

Step-by-step explanation:

okay it costs $200 to attend so that's a cost you are going to have to pay regardless. The $2,000 depends on how many cars you buy. So it would be 2,000 (times how ever many cars you buy) plus the $200.

3 0

3 years ago

10. A movie theater advertises that a family of two adults, one student, and one child between the ages of 3

BlackZzzverrR [31]

Answer:

Students ticket = $4

Child ticket = $1

Adult ticket = $5

Step-by-step explanation:

Let the price of the student ticket be $x and the price of a child ticket be $y. An adult ticket costs as much as the combined cost of a student ticket and a child ticket, so the price of one adult ticket is $(x+y).

1. A movie theater advertises that a family of two adults, one student, and one child between the ages of 3 and 8 can attend a movie for $15. Then

$2(x+y)+x+y=15$

2. If you purchase 1 adult ticket, 4 student tickets, and 2 child tickets for $23, then

$(x+y)+4x+2y=23$

Now, solve the system of two equations:

$\left\{\begin{array}{l}2(x+y)+x+y=15\\ \\(x+y)+4x+2y=23\end{array}\right.\Rightarrow \left\{\begin{array}{l}3(x+y)=15\\ \\5x+3y=23\end{array}\right.\\ \\\left\{\begin{array}{l}x+y=5\\ \\5x+3y=23\end{array}\right.\\ \\\left\{\begin{array}{l}y=5-x\\ \\5x+3(5-x)=23\end{array}\right.$