If the value of  b  is 7, then what is the value of the expression -3b2  + 25 = ?                 a.  17      b.  –122      c.  122      d.  172. −3(7)2+25−3×49+25−147+25−122 b.-122

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²