# 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.

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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?

[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]

[supanova_question]

## 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