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yuradex [85]
3 years ago
10

PLEASE HELP ILL GIVE BRAINLIEST

Mathematics
1 answer:
Elza [17]3 years ago
6 0
The answer should be b
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Calculate the heat required to melt 1 g of gold at its melting point. The specific heat of fusion for gold is 64.5×103 J/kg.
Galina-37 [17]

Answer:

64.5J

Step-by-step explanation:

Q = ml

Q = (1/1000)kg X 64.5x10^3 J/kg

Q = 64.5 J

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Select the coordinates of two points that are on the line x = 5.
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8 0
3 years ago
If 2500 is to be divided among Ravi, Raju and Roy, so that Ravi gets two parts, Raju has
fenix001 [56]

Answer:

The money each will get are <u>500 to Ravi</u> , <u>750 to Raju</u> and <u>1250 to Ravi</u>. And there percentages are <u>Ravi's 20%</u>, <u>Raju's 30%</u> and <u>Roy's 50%</u>.

Step-by-step explanation:

Given:

2500 is to be divided among Ravi, Raju and Roy, so that Ravi gets two parts, Raju has  three parts and Roy five parts.

Now, to find the money each will get and the percentages of it.

Let the price of one part be x.

The price of two parts be 2x.

The price of three parts be 3x.

And the price of five parts be 5x.

According to question:

2x+3x+5x=2500.

10x=2500

Dividing both sides by 10 we get:

x=250.

<em>Ravi gets two parts = </em>2x=2\times 250=500.<em />

<em>Raju gets three parts = </em>3x=3\times 250=750.<em />

<em>Roy gets five parts =</em> 5x=5\times 250=1250.

Now, the percentage of the money they get:

Percentage of Ravi's share:

\frac{500}{2500} \times 100\\=\frac{50000}{2500} \\=20\%.

Percentage of Raju's share:

\frac{750}{2500} \times 100\\\\=30\%.

Percentage of Roy's share:

\frac{1250}{2500} \times 100\\\\=50\%.

Therefore, the money each will get are 500 to Ravi , 750 to Raju and 1250 to Ravi. And there percentages are Ravi's 20%, Raju's 30% and Roy's 50%.

4 0
3 years ago
Pls answer this for me, this is the remainder theorem for grade 9 so help me.
professor190 [17]

Answer:

1.  3

2. 2

Step-by-step explanation:

| |  

x | + | 1 | | x^2 | + | 4 x | - | 2

x^3 | + | 5 x^2 | + | 2 x | + | 1

x^3 | + | x^2 | | | |  

| | 4 x^2 | + | 2 x | |  

| | 4 x^2 | + | 4 x | |  

| | | | -2 x | + | 1

| | | | -2 x | - | 2

| | | | | | 3

__________________________________________

| |  

x | - | 5 | | x^2 | - | x | + | 0

x^3 | - | 6 x^2 | + | 5 x | + | 2

x^3 | - | 5 x^2 | | | |  

| | -x^2 | + | 5 x | |  

| | -x^2 | + | 5 x | |  

| | | | | | 2

| | | | | | 0

| | | | | | 2

5 0
3 years ago
Read 2 more answers
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