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3 years ago

Why is graphite soft

Mathematics

2 answers:

murzikaleks [220]3 years ago

8 0

Answer:

Its compound

Step-by-step explanation:

ryzh [129]3 years ago

3 0

Answer:

because it has a weak inter molecular forces between its layers

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What is the markup percent on a diamond for which the markup is $870 and the selling price is $2870?

ryzh [129]

Answer:

30.31%

Step-by-step explanation:

Mark up on selling price is given by markup*100%/selling price

In this case, markup is given as $870 while the selling price is $2870 hence the percentage of narkup to selling price will be given by $\frac {870\times 100}{2870}=30.313588850174\approx 30.31$

Therefore, the percentage of markup to selling price is approximately 30.31%

3 0

2 years ago

David purchased some cookies at the cost of 5 for $4 and sold them at 4 for $5. David made a profit of $180 in total. How many c

horsena [70]

David purchased some cookies at the cost of

5 for $4 (5/4=1.25) and

sold them at 4 for $5(4/5=0.80).

To find cost per cookie subtract 1.25-0.80=0.45

David made a profit of $180 in total ( divide profit per cookie cost: 180/0.45= 400)

How many cookies did David purchase to make that much money?

He needed to make 400 cookie to make the profit of $180.

5 0

3 years ago

The formula for the area of a rectangle is A = lw. What

emmasim [6.3K]

Answer:

20 square units

Step-by-step explanation:

we know that

The area of rectangle is equal to

$A=LW$

In this problem

$L=WX=ZY\\W=WZ=XY$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Find the distance WX

we have

W(-3,1), X(3,3)

substitute the values in the formula

$d=\sqrt{(3-1)^{2}+(3+3)^{2}}$

$d=\sqrt{(2)^{2}+(6)^{2}}$

$d_W_X=\sqrt{40}\ units$

Find the distance XY

we have

X(3,3),Y(4,0)

substitute the values in the formula

$d=\sqrt{(0-3)^{2}+(4-3)^{2}}$

$d=\sqrt{(-3)^{2}+(1)^{2}}$

$d_X_Y=\sqrt{10}\ units$

Find the area of rectangle

$A=(WX)(XY)$

substitute the values

$A=(\sqrt{40})(\sqrt{10})=20\ units^2$

7 0

3 years ago

Read 2 more answers

Simplify the expression: 3(5+3k) whoever first gets brainliest

miss Akunina [59]

Answer:

Step-by-step explanation:

15+9k

8 0

2 years ago

Find x on this special right triangle

tigry1 [53]

Answer:

The answer is 7

Step-by-step explanation:

We know than Tan45=1

Tanx=opp/adj

tan45=y/(7 $\sqrt{2}$ )/2

Thus y=7 $\sqrt{2}$ /2

We know by pythagoras theorem that hyp^2=side^2+side^2

$x^{2}$ =( $(7\sqrt{2} /2)^{2}$ + $(7\sqrt{2}/2)^{2}$

$x^{2}$ =(49(2)/4)+(49(2)/4)

$x^{2}$ =(49/2)+(49/2)

$x^{2}$ =(98/2)

$x^{2}$ =49

x=7

6 0

2 years ago

Why is graphite soft​

Why is graphite soft