Answer:
x= 5
Step-by-step explanation:
You need to get rid of the fraction first and to do that you muliply the whole equation by 5 so that your new equation reads 4x+25=45. Then you subtract 25 from both sides so you have 4x=20. Divide both sides by 4 so x=5.
Answer:
(-∞,-9)
Step-by-step explanation:
Answer:
3000
Step-by-step explanation:
There are 5 odd digits, so 5^3 = 125 ways to have 3 odd digits.
Given 3 odd digits, the first digit can be even, but not zero, so there are 4 ways to do that.
The second, third, or fourth digits can be even 5 ways, so there are ...
125(4 +5 +5 +5) = 2375
ways to have 3 odd digits in a 4-digit number.
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There are 5^4 = 625 ways to have 4 odd digits.
The number of 4-digit numbers with 3 or 4 odd digits is ...
2375 +625 = 3000
Answer:
Looks like 1 to me the first line
Step-by-step explanation:
