3 years ago

.Joline collects hockey cards.

Mathematics

1 answer:

shusha [124]3 years ago

3 0

Answer:

25 Cards

Step-by-step explanation:

If 5 cards is 20% and you only need 5 more then that means you have the other 80%. So you 20 80/20 which is 4. Then do 4x5=20 then add the 5 you still need.

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The sum of two numbers is 41. Double the first number reduced by triple the second

atroni [7]

X+y=41
2x-3y=12

27+14=41
2•27-3•14=12

x=27
y=14

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2 years ago

The density of gold is 19.3 g/cm3. What is the density in kilograms per cubic meter? A. 1.93 x 102 kg/m3 B. 1.93 x 104 kg/m3 C.

never [62]

we are given

density of gold = 19.3g/cm^3

we know that

$1g=10^{-3}kg$

$1cm=10^{-2}m$

we have to change it into kg/m^3

so, we can plug these values

$19.3\frac{g}{cm^3} =19.3\frac{10^{-3}kg}{(10^{-2}m)^3}$

we can also write as

$19.3\frac{g}{cm^3} =19.3\frac{10^{-3}}{(10^{-2})^3}\frac{kg}{m^3}$

now, we can simplify it

$19.3\frac{g}{cm^3} =19300\frac{kg}{m^3}$

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3 years ago

Express 0.000000015 in scientific notation

babymother [125]

1.5 times 10 to the -8th power

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3 years ago

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What is the relationship between the following two sequences?

LuckyWell [14K]

Answer:

The 1st option

Step-by-step explanation:

Notice in sequence 1, it is 1,6; 2,12

That is sequence 1 * 6 = sequence 2.

Hope this helps! Have a nice day!

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3 years ago

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k0ka [10]

Answer:

D. $2\sqrt {133}$

Step-by-step explanation:

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3 years ago