Answer/explanation :
Step-by-step
subtract 15-8 you have 7 then take
10- ur answer is 7
10-7= 3
Answer:
first get the total ratio; 2 + 5 = 7
so the fraction of blue marbles is 5/7
then assume the number of total marbles to be k
then use the expression;
5/7*k = 65
7*5/7 * k = 65*7
5k =455
5/5k = 455/5
k = 91
then calculate the number if red marbles from;
x = 2/7*91
x = 26
Therefore there are 26 red marbles.
Step-by-step explanation:
Sum of 20 terms in thr arithmetic sequence adds up to -1930
Answer:
need the diagram
Step-by-step explanation:
Answer:
thfxhdnyk
Step-by-step explanation: