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The bill consisted of a fixed charge of $13.50 plus a charge of $0.0075 per gallon for the water used in the quarter. For how many gallons of water was Judy charged for the quarter? gallons Click on the answer box, then type in a number. Backspace to erase. ´ÓÊýѧ֪ʶÀ´Ëµ£¬±¾Ìâ»ù±¾Ï൱ÓÚÖйúСѧ¸ßÄê¼¶ÊýѧӦÓÃÌâµÄÄѶȣ¬ÔÚÔĶÁÀí½â׼ȷµÄǰÌáϽâÌâÓ¦¸ÃûÓÐÌ«´óÄѶȡ£±¾Ìâ¿ÉÒÔ¿´×÷ÊÇETSÌá³öµÄ¡°Ôö¼ÓÈÕ³£ÕæÊµ±³¾°ÎÊÌ⡱µÄÒ»¸öÀý×Ó¡£ Àý2£¬The average (arithmetic mean) of the 11 numbers in a list is 14. If the average of 9 of the numbers in the list is 9, what is the average of the other 2 numbers? 11¸öÊýµÄËãÊõƽ¾ùÊÇ14¡£ÈôÆäÖÐ9¸öÊýµÄËãÊõƽ¾ùΪ9£¬ÔòʣϵÄ2¸öÊýµÄƽ¾ùÊýÊǶàÉÙ£¿ ±¾Ì⿼²ìµÄÊÇ¿¼Éú¶ÔËãÊõƽ¾ùÖµÕâÒ»¸ÅÄîµÄÈÏʶ¡£Èç¹ûN¸öÊýµÄËãÊõƽ¾ùÊÇX£¬ÔòÕâN¸öÊýÖ®ºÍΪN¡ÁX¡£Ö»ÒªÕÆÎÕÁËÕâÒ»µã¶ÔÓÚÄÇЩ¿¼²ìËãÊõƽ¾ùÖµµÄÌâÄ¿¾ÍÓ¦¸ÃÓÈжø½âÁË¡£´ÓÕâÀïÎÒÃÇÒ²¿ÉÒÔ¿´³öÔڸĸïºóµÄGREÊýѧÖУ¬¶ÔÓÚһЩͳ¼ÆÑ§ÊýÖµ£¨±ÈÈçËãÊõƽ¾ù¡¢¼«²î¡¢±ê×¼·½²î¡¢ÖÐÊýµÈ£©µÄÀí½âÒªÇóÌá¸ßÁË¡£ÎÒÃÇÔÙ¿´ÕâÑùÒ»µÀ±È½Ï´óСµÄÌâÄ¿£º Àý3£¬ Quantity A Quantity B The standard deviation of a set of 5 different integers each of which is between 0 and 10 The standard deviation of a set of 5 different integers each of which is between 10 and 20 A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. The relationship cannot be determined from the information given. ±¾ÌâÒªÇó±È½Ï´¦ÓÚ[0,10]Ö®ÖеÄ5¸ö²»Í¬ÕûÊýµÄ±ê×¼·½²îÓë´¦ÓÚ[10,20]Ö®ÖеÄ5¸ö²»Í¬ÕûÊýµÄ±ê×¼·½²îÖ®¼äµÄ´óС¡£Õâ¾ÍÒªÇó¿¼Éú¶ÔÓÚ±ê×¼·½²îÕâÒ»¸ÅÄîÓбȽϾ«È·ÉîÈëµÄÁ˽⡣±ê×¼·½²îÌåÏÖµÄÊÇÒ»×éÊýÏà¶ÔÓÚËûÃǵÄËãÊõƽ¾ùÖµ¶øÑԵIJ¨¶¯·ù¶È£¬ºÍÕâ×éÊýËù´¦µÄÇø¼äûÓÐÖ±½ÓÁªÏµ¡£Òò¶ø±¾ÌâӦѡÔñDÎÞ·¨Åжϡ£ 2£¬³öÏÖÁ˶àÏîÑ¡ÔñÌ⣬ҪÇó¿¼Éú°ÑËùÓзûºÏÌâÒâµÄ´ð°¸¶¼Ñ¡³öÀ´¡£ÓÉÓÚGREÊýѧ±¾Éí¿¼²ìµÄÊýѧ֪ʶ²¢Ã»ÓбäÄÑ£¬ËùÒÔÕâÖÖÌâÐͽö½öÊÇÔö¼ÓÁË¿¼Éú˼άµÄ¸´ÔÓÐÔ£¬²¢ÒªÇó¿¼Éú¸ü¼ÓϸÐÄ¡£ Àý4£¬In triangle ABC, the measure of angle A is 25¡ã and the measure of angle B is greater than 90¡ã. Which of the following could be the measure of angle C ? Indicate all possible values. A. 12¡ã B. 15¡ã C. 45¡ã D. 50¡ã E. 70¡ã Click on your choice(s). ±¾Ì⿼²ìµÄÊÇÈý½ÇÐεĻù±¾ÐÔÖÊ£ºÄڽǺ͵ÈÓÚ180¶È¡£ÓÉÌâÒâ¿ÉÖª½ÇA½ÇBÖ®ºÍ´óÓÚ115¶È£¬Óɴ˵õ½0 3£¬³öÏÖÁËÌî¿ÕÌ⣺ Àý5£¬ House Prices Number of Houses $100,000 - $133,000 12 $134,000 - $166,000 25 $167,000 - $199,000 8 The table shows the distribution of prices of 45 houses for sale in a certain region. Select two of the following choices and place them in the blanks below so that the resulting statement is true. $175,000 $185,000 $190,000 at most $42,000 at least $57,000 If the highest price of the 45 houses is , then the range of the prices of the 45 houses is . Click on a choice, then click on a blank. ±¾Ìâ½áºÏÁËͼ±íÌâºÍ¼ÆËãÌâµÄÌØµã£¬²¢ÔÙ´ÎÌåÏÖÁËǰÊö¶ÔÓÚͳ¼ÆÑ§¸ÅÄîµÄ¾«È·ÈÏʶҪÇóÌá¸ßµÄÒªµã¡£±¾Ì⿼²ìµÄÊǼ«²î£¨Range£©ÕâÒ»¸ÅÄ¼´Ä³Ò»¼¯ºÏÖеÄ×î´óÖµÓë×îСֵ֮¼äµÄ²îÖµ¡£Ö»ÒªÁ˽âRangeµÄº¬Òå²¢ÇÒÀí½âÁ˱¾Ìâͼ±í£¬½âÌâÄѶȲ»´ó¡£±¾ÌâÖÐ×îµÍ·¿¼Û´¦ÓÚ$100,000µ½$133,000µÄÇø¼äÖ®ÖУ¬Òò´Ë¼«²î×î´óֵΪ×î¸ß·¿¼Û¼õÈ¥$100000£¬¼«²î×îСֵΪ×î¸ß·¿¼Û¼õÈ¥$133000£¬Í¨¹ý¶ÔËù¸øÑ¡ÏîµÄÊÔÑé·¢ÏÖÖ»ÓзֱðÌî$190000ºÍat least $57000²ÅÄÜʹÕâ¾ä»°³ÉÁ¢¡£ 4£¬³öÏÖÁËÅжÏÌ⣬¼´ÒªÇó¿¼ÉúÅжÏijһµÈʽ»òijһÃüÌâµÄ¶ÔÓë´í Àý6£¬The symbol ∆ represents one of the four operations of addition, subtraction, multiplication, and division, and 3 ∆ 1 = 3. For each of the following equations, indicate whether the equation must be true, must be false, or could be either true or false. Equation Must Be True Must Be False Could Be True or False 6 ∆ 2 = 3 6 ∆ 2 = 4 6 ∆ 2 = 12 Click on your choices. Click on the answer box, then type in a number. Backspace to erase. GREÖгöÏֵķdz£¹æÊýѧ·ûºÅ¿ÉÒÔ¿´³ÉETS×Ô¼º¶¨ÒåµÄÒ»ÖÖÔËËã¡£±¾ÌâÖУ¬·ûºÅ∆´ú±íµÄÊǼӼõ³Ë³ýËÄÖÖËÄÔòÔËËãÖеÄijһÖÖ£¬¶øÇÒ3∆1£½3£¬ÓÉÕâЩÒÑÖªÌõ¼þ¿ÉÒÔÍÆ³ö∆¿ÉÒÔÊÇ¡Á£¬Ò²¿ÉÒÔÊǡ¡£½ÓÏÂÀ´¾Í¿¼²ì¿¼Éú¶ÔÓÚmust be true¡¢could be trueÕâÀàÂß¼ÅжÏÓïÑÔµÄÀí½âÁË¡£Must be trueÒâΪ±ØÈ»ÕýÈ·£¬ÔÚÈκÎʱºò¶¼²»¿ÉÎ¥±³£»Could be trueÒâΪ¿ÉÒÔÕýÈ·£¬¼´´æÔÚÕýÈ·µÄ¿ÉÄÜ¡£ Òò´ËµÚÒ»¸öµÈʽ6∆2£½3ÔÚ∆´ú±í¡Áʱ´íÎ󣬵«ÔÚ∆´ú±í¡ÂʱÕýÈ·£¬Òò´ËµÚһʽӦΪcould be true or falseÓпÉÄܶÔÒ²¿ÉÄÜ´í£» µÚ¶þ¸öµÈʽ6∆2£½4²»ÂÛ∆´ú±í¡Á»ò¡Â¶¼²»ÕýÈ·£¬Òò´ËµÚ¶þʽӦΪmust be falseÒ»¶¨´íÎó£» µÚÈý¸öµÈʽ6∆2£½12ÔÚ∆´ú±í¡ÁʱÕýÈ·£¬µ«ÔÚ∆´ú±í¡Âʱ´íÎó£¬Òò´ËµÚÈýʽͬµÚһʽһÑù£¬Ò²ÊÇÓпÉÄܶÔÒ²ÓпÉÄÜ´í¡£ 5£¬±È½Ï´óСµÄÌâÄ¿ÓÉÔÀ´µÄÿ¸öSection15µÀÌâÏ÷¼õΪ10µÀÌ⣬ͼ±íÌâÈÔÈ»ÊÇ5µÀ£¬¶øÇÒÑùÌâÖÐͼ±íÌâµÄÀàÐÍ¡¢ÄѶȺÍÒÔǰÏà±ÈûÓÐʲô±ä»¯¡£ ×ܶøÑÔÖ®£¬¸Ä¸ïºóµÄGREÊýѧÔÚÊýѧ֪ʶºÍÄѶÈÉϲ¢Ã»Óб¾Öʱ仯£¬Ö»ÊÇÌâÄ¿ÊýÁ¿ºÍÐÎʽ·¢ÉúÁËһЩ±ä»¯¡£Ö»Òª¶ÔÐÂÌâÐÍÓгä·ÖÁ˽âÖª¼ºÖª±Ë£¬ÐÂGREµÄÊýѧ²¿·Ö¶ÔÖйú¿¼Éú²»»áÓÐÌ«´óÓ°Ïì¡£ |
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