# Evaluating expressions with variables word problems Mathematics Assignment Help

Evaluating expressions with variables word problems Mathematics Assignment Help. Evaluating expressions with variables word problems Mathematics Assignment Help.

The expression

4x4x gives the perimeter of a square with a side length of xx units.
What is the perimeter of a square with a side length of dfrac5775 units?

Evaluating expressions with variables word problems Mathematics Assignment Help[supanova_question]

## Becky and Tommy are asked to solve –4x – 25 = 8x + 15. Identify where one of the Mathematics Assignment Help

 Becky Tommy –4x – 25 = 8x + 15–4x – 25 – 8x = 8x + 15 – 8x–12x – 25 = 15-12x – 25 + 25 = 15 + 25–12x = 40 –4x – 25 = 8x + 15–4x – 25 + 4x = 8x + 15 + 4x–25 = 12x + 15–25 – 15 = 12x + 15 – 15–40 = 12x

(1 point)

Question 2 options:

[supanova_question]

## –2x – 13 = 8x + 7, which order of operations completely solves for x? Mathematics Assignment Help

[supanova_question]

## The substance alpha chromium is found to crystallize in a cubic lattice, with an Science Assignment Help

The substance alpha chromium is found to crystallize in a cubic lattice, with an edge length of 871.7 pm. If the density of solid alpha chromium is 7.561 g/cm3, how many Cr atoms are there per unit cell?

Your answer should be an integer:  atoms

[supanova_question]

## Evaluating expressions with variables word problems Mathematics Assignment Help

The expression

62.4d-21062.4d−210 gives the number of Indian rupees you receive when you exchange $d$d at the local currency exchange.
How many Indian rupees do you receive when you exchange $13$13?

[supanova_question]

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## The number of cars (c) in a parking lot increases when the parking fee (f) decre Mathematics Assignment Help

 Fee Cars 20 15 30 10

(1 point)

Question 4 options:

The number of cars (c) in a parking lot increases when the parking fee (f) decre Mathematics Assignment Help[supanova_question]

## A sample of carbon dioxide gas has a density of g/L at a pressure of 1.36 atm a Science Assignment Help

A sample of carbon dioxide gas has a density of  g/L at a pressure of 1.36 atm and a temperature of 56 °C.

Assume ideal behavior.

[supanova_question]

## A sample of gas contains 0.1200 mol of OF2(g) and 0.1200 mol of H2O(g) and occup Science Assignment Help

A sample of gas contains 0.1200 mol of OF2(g) and 0.1200 mol of H2O(g) and occupies a volume of 7.92 L. The following reaction takes place:

OF2(g) + H2O(g)O2(g) + 2HF(g)

Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

L

[supanova_question]

## A sample of gas contains 0.1200 mol of OF2(g) and 0.1200 mol of H2O(g) and occup Science Assignment Help

A sample of gas contains 0.1200 mol of OF2(g) and 0.1200 mol of H2O(g) and occupies a volume of 7.92 L. The following reaction takes place:

OF2(g) + H2O(g)O2(g) + 2HF(g)

Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

L

[supanova_question]

## A sample of gas contains 0.1600 mol of C2H4(g) and 0.1600 mol of Br2(g) and occu Science Assignment Help

A sample of gas contains 0.1600 mol of C2H4(g) and 0.1600 mol of Br2(g) and occupies a volume of 10.4 L. The following reaction takes place:

C2H4(g) + Br2(g)CH2BrCH2Br(g)

Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant.

[supanova_question]

Evaluating expressions with variables word problems Mathematics Assignment Help

Evaluating expressions with variables word problems Mathematics Assignment Help 