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Marat540 [252]
3 years ago
12

What is 2x/5 = 10 what is x

Mathematics
2 answers:
Vadim26 [7]3 years ago
8 0

Answer: x=25

Step-by-step explanation: Just do 10x 5 to reverse the equation. 10x5=50

50 then divided by 2 equals 25. X=25

stellarik [79]3 years ago
3 0

Answer:

X =25

Step-by-step explanation:

5 times the 10 making it 50

Makes it so 2x=50

Do 50/2 to get 25

Check answer

2 X 25 / 5 = 10

Hope this helped

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3.20 × 105 gallons of tar (SG = 1.20) is stored in a 20.0-ft tall storage tank. What is the total mass of the liquid in the tank
lilavasa [31]

Answer:

Mass of the liquid in the tank will be 1.45\times 10^8kg

Step-by-step explanation:

We have given volume of tar V=3.20\times 10^5gallon

1 gallon = 3.785 liter

So 3.20\times 10^5gallon=3.20\times 10^{5}\times 3.785=12.112\times 10^5liter

Specific gravity = 1.2

Density of water =1000kg/m^3

We know that specific gravity =\frac{density\ of\ liquid}{density\ of\ water}

1.2=\frac{density\ of\ liquid}{density\ of\ water}

Density of liquid =1200kg/m^3

So mass of liquid = volume × density

= 12.112\times 10^5\times 1200=1.45\times 10^8kg

So mass of the liquid in the tank will be 1.45\times 10^8kg

6 0
3 years ago
The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh
konstantin123 [22]

Answer:

33 copies were paperback and 12 were hardcover.

Step-by-step explanation:

Let h represent the number of hardcover copies and p represent the number of paperback copies.

We know that the total number of copies was 45; this gives us the equation

h+p = 45

We know that each hardcover copy is 7 ounces; this gives us the expression 7h.

We also know that each paperback copy is 5 ounces; this gives us the expression 5p.

We know that the total weight was 249 ounces; this gives us the equation

7h+5p = 249

Together we have the system

\left \{ {{h+p=45} \atop {7h+5p=249}} \right.

We will use elimination to solve this.  First we will make the coefficients of the variable p the same; to do this, we will multiply the top equation by 5:

\left \{ {{5(h+p=45)} \atop {7h+5p=249}} \right. \\\\\left \{ {{5h+5p=225} \atop {7h+5p=249}} \right.

To eliminate p, we will subtract the equations:

\left \{ {{5h+5p=225} \atop {-(7h+5p=249)}} \right. \\\\-2h=-24

Divide both sides by -2:

-2h/-2 = -24/-2

h = 12

There were 12 hardcover copies sold.

Substitute this into our first equation:

12+p=45

Subtract 12 from each side:

12+p-12 = 45-12

p = 33

There were 33 paperback copies sold.

3 0
3 years ago
Read 2 more answers
4 more than the price p as a alegebraic expression
hram777 [196]

Answer:

p+4 should be the answer

5 0
3 years ago
Johnny has 200 cupcakes he gave 10 to You and 20 to Your Teacher how many cupcake you gave away
Ilya [14]

Answer:

30 cupcakes

Step-by-step explanation:

10+20 equal 30

4 0
3 years ago
Read 2 more answers
The weight of 10 identical samples of a substance is 0.01 pound. What is the weight of 1000 samples?
lys-0071 [83]
The weight would be 10 pounds
7 0
3 years ago
Read 2 more answers
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