Step-by-step explanation:
Let the digit at tens place of a two digits number be X
The place value of X = 10×X = 10X
The units digit = 5 more than its tens digit
= X+5
The place value of units digit
= (X+5)×1
= X+5
Now
The two digits number
= 10X+X+5
⇛ 11X+5
Therefore ,The two digits number = 11X+5.
Answer:
9x
Step-by-step explanation:
let's say that x is the number we don't know
the product means multiplication
9*x=9x
so the answer is 9x
Answer:
p = 15/40
Step-by-step explanation:
Since the total number of marbles is 40, that is our size of the sample. there are 16 red ones on that sample, so the probability of extracting a red marble from the box is given by the ratio of successes divided the total number of marbles:
p = 15/40
Answer:
D. 15 cubic units
Step-by-step explanation:
Volume is height x length x width
h=2 1/2
l = 4
w = 1 1/2
multiply them to get 15 :)