There will be excactly 400 fiction books. The ratio of fiction to all is 4 to 9, or 4 to 900.
-10x+9x+14-1=4
then you add similar elements which gives you -x+14-1=4
next you subtract the numbers 14-1=13
then subtract 13 from each side -x+13-13=4-13
then you simplify -x = -9
divide both sides my negative 1 -x/-1 = -9/-1
and then you get the answer: x=9
(3x+7)(2x−5)
=(3x+7)(2x+−5)
=(3x)(2x)+(3x)(−5)+(7)(2x)+(7)(−5)
=6x2−15x+14x−35
=6x2−x−35
Hope This Helps.
Answer:
-5 + 3(7.2 - 3.2) equals 7.
Step-by-step explanation:
The order of operations states the order in which different mathematical operations should be done first, you can use the mnemonic PEMDAS to remember the order to complete each operation. PEMDAS states that the order must be followed as Parenthesis, Exponents, Multiplication/Division, and Addition/Subtraction. In the expression -5 + 3(7.2 - 3.2), the three mathematical operations being used are subtraction, multiplication, and parenthesis, so based on PEMDAS, the order to complete them is parenthesis, multiplication, and subtraction. -5 + 3(7.2 - 3.2) = -5 + 3(4) = -5 + 12 = 7, so that is your final answer.
X=9 is the correct answer