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3 years ago

12

The mass of the blue copper sulfate crystal is two-thirds the mass of the red fluorite crystal. Write an equation you can use to

find the mass m (in grams)of the blue copper sulfate crystal.
plz :(

2 answers:

My name is Ann [436]3 years ago

4 0

It is 30 divided by 1/3 or 3. The answer is 10

Reptile [31]3 years ago

3 0

Answer: multiplication i think

Step-by-step explanation:

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A fishing boat caught the following

xenn [34]

Wait what?? If you are talking about how much it could have caught it's 0 I guess

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3 years ago

Suck at fractions and simplifying

galina1969 [7]

Answer:

7

Step-by-step explanation:

2(3) + 6²/6

Multiply 2x3 and 6² is just multiplying 6x6

6+36/6

Add 6+36

42/6

Divide 42 by 6

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8 0

2 years ago

Read 2 more answers

7×300=7× blank hundreds

VladimirAG [237]

7x300=7x 3 hundres because in 300 hundreds there is 3 hundreds.I know that didnt make sense.so basically just look at the front number number its 3 so 3 hundreds but if your working with thousands and the front number is 5 its 5 thousands.I hope this was helpful.

6 0

3 years ago

After a bride has interviewed 7 DJs to play at her wedding, her fiance tells her she needs to narrow it down to 4 DJs. In how ma

Alex17521 [72]

Answer:

840

Step-by-step explanation:

Given

$DJs = 7$

$To\ pick = 4$

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

$^nP_r = \frac{n!}{(n-r)!}$

Where

$n = 7$

$r = 4$

So:

$^nP_r = \frac{n!}{(n-r)!}$

$^7P_4 = \frac{7!}{(7-4)!}$

$^7P_4 = \frac{7!}{3!}$

$^7P_4 = \frac{7 * 6 * 5 * 4 * 3!}{3!}$

$^7P_4 = 7 * 6 * 5 * 4$

$^7P_4 = 840$

<em>Hence, number of ranking is 840</em>

7 0

3 years ago

What is the polynomial -9+1/8x-7x^4+x^2-x^5 in standard form

Oduvanchick [21]

Answer:

-x^5 - 7x^4 + x^2 + (1/8)x - 9

Step-by-step explanation:

Rewrite the given -9+1/8x-7x^4+x^2-x^5 in descending order of the variable x:

-9+1/8x

-x^5 - 7x^4 + x^2 + (1/8)x - 9

7 0

3 years ago