9 grade math problem help

Nine less than twice a number is thirteen. Find the number. => 22 or 2 or 13 or 11..

Question: How many words of different 4 letters can be formed out of 7 capital letters, 3 vowels and 8 consonants, if each word starts with a capital letter and contains at least one vowel? Answer: Any capital letter can be chosen as the first letter of each word. So there are 7 ways of..

Question: How many six digits telephone numbers can be made if each number starts with 45 and no digit appears more than once? Answer: The first two places are reserved for 4 and 5. The remaining 8 digits can be arranged in P(8,4) = 8.7.6.5 = 1680 way..

Identify 'Nine and forty-eight hundredths' in decimal form. => 9.49 or 10.48 or 10.49 or 9.48..

Identify the number that reads Fifty-nine. => 69 or 59 or 55 or 58..

Find the standard form of 'three hundred sixty-nine and four hundredths'. => 369.004 or 369.400 or 369.04 or 4.369..

Michael bought a costume for seventy-nine cents.Which of the following represents seventy-nine cents in dollar notation? => $0.57 or $0.79 or $0.45 or $0.23..

Question: Solve the following equation: Answer: 4x + 7 = -3 (2x + 1) (By cross-multiplication) 4x+7=-6x-3 4x+6x=-3-7 10x=-10 x=-..

Question: Draw the graph of x+4=0. Answer: ..

Question: Find the median of : 15, 8, 14, 20, 13, 12, 16. Answer: 8, 12, 13, 14, 15, 16, 20 n = 7 (odd) Median = 1..