STAAR Countdown: Series 9/Page 1 (HOMEWORK)_Apr 20

1) Which answer choice represents an equation?

• A. Eight less than q plus 9

• B. Twenty times r

• C. Thirteen minus x is 5

• D. Six times the sum of 3 and 4

Answer explanation

Choice C is an equation because it includes an equal sign, stating that 'Thirteen minus x' equals 5. The other choices are expressions or phrases without an equality.

Tags

TEKS.6.7.B

2) Which list of angle measures could be the angle measures of a triangle?

• F. 40°, 40°, 90°

• G. 35°, 40°, 105°

• H. 80°, 45°, 80°

• J. 50°, 68°, 64°

Answer explanation

The sum of the angles in a triangle must equal 180°. For choice G, 35° + 40° + 105° = 180°, making it valid. The other choices do not sum to 180°, so G is the only correct option.

Tags

TEKS.6.8.A

3) The table shows the relationship between x and y, where x is the independent variable. Which equation represents the relationship between x and y?

Answer explanation

The correct choice is D, y = 2.9x, as it indicates a direct proportional relationship between x and y, where y increases by 2.9 times for every unit increase in x, consistent with the data in the table.

Tags

TEKS.6.6.B

4) A rectangular prism is shown. What is the volume of the prism?

• F. 202 ½ ft³

• G. 196 ft³

• H. 180 ½ ft³

• J. 18 ½ ft³

Answer explanation

To find the volume of a rectangular prism, multiply its length, width, and height. The correct calculation yields 202 ½ ft³, making choice F the correct answer.

Tags

TEKS.6.8.D

5) The dot plot shows the widths of 16 flat-screen televisions for sale at an electronics store. Which statement is supported by the data in the dot plot?

• A. The number of TVs with a width of 1.9 meters is less than the number of TVs with a width of 1.5 meters.

• C. The number of TVs with a width of 1.2 meters is greater than the number of TVs with a width of 1.7 meters.

Answer explanation

The dot plot shows that there are 4 TVs with a width of 1.8 meters, which is 1/4 of the total 16 TVs. This confirms that choice B is correct, while the other statements do not accurately reflect the data.

Tags

TEKS.6.13.A

6) A programmer writes 54 lines of code in 6 hours. At this rate, how many lines of code does the programmer write in 72 hours? Enter your answer in the box.

Mathematical Equivalence

ON

Tags

TEKS.6.4.B