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3 years ago

Help Literal Equations

Mathematics

1 answer:

Rom4ik [11]3 years ago

8 0

If you are trying to find x it is x=15-y

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How many grams is 3.3 mole of Mg(OH)2 ?

Brrunno [24]

Answer: m = 3.3 mol·58.326 mol = 192 g

Step-by-step explanation: molar mass of substance is

M= (24.31+ 2·1.008 + 2·16) g/mol = 58.326 g/ mol.

Amount of substance n = m/M and mass m = n·M

7 0

3 years ago

Help and show all work please

Aloiza [94]

Answer:

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3 years ago

Find the volume of the cone.

lutik1710 [3]

Answer:

Step-by-step explanation:

8 0

2 years ago

At a particular restaurant, each pizza roll has 60 calories and each mini hotdog has 70 calories. A combination meal with pizza

PolarNik [594]

Answer:

There are 9 pizza rolls and 12 mini hotdogs in the meal.

Step-by-step explanation:

We are given the following in the question.

Let x be the number of pizza rolls sold and y be the number of mini hotdogs in the combination meal.

Total number of items in combination meal = 21

Thus, we can write the equation:

$x + y = 21$

Calorie in a pizza roll = 60

Calorie in a mini hotdog = 70

Total calories = 1380

Thus, we can write the equation:

$60x + 70y = 1380$

Solving the two equations, we get,

$60x + 70y - (60x+60y) = 1380 - 60(21) \\10y = 120\\\Rightarrow y = 12\\\Rightarrow x = 21-12 = 9$

Thus, there are 9 pizza rolls and 12 mini hotdogs in the meal.

4 0

3 years ago

4b + 5 = 1 + 5b what is b?

Alla [95]

Answer: b = 4

Step-by-step explanation:

Given

4b + 5 = 1 + 5b

Subtract 4b on both sides

4b + 5 - 4b = 1 + 5b - 4b

5 = 1 + b

Subtract 1 on both sides

5 - 1 = 1 + b - 1

$\boxed{b=4}$

Hope this helps!! :)

Please let me know if you have any questions

3 0

3 years ago