1.) Let their speed be x, then distance travelled = speed x time
1.5x + 2.5x = 240
4x = 240
x = 240/4 = 60
Their speed is 60 miles per hour.
2.) Let catie's brother's age be x, then catie's age is 3 + x
x + 3 + x ≤ 31
Required inequality is 2x + 3 ≤ 31
2x ≤ 31 - 3
2x ≤ 28
x ≤ 28/2
x ≤ 14
Therefore, the oldest age Catie's brother can be is 14 years old.
3.) Let June's age be x, then her father's age is 6x
6x + x ≥ 77
7x ≥ 77
x ≥ 77/7
x ≥ 11
The youngest age Julio can be is 11 years old.
Answer:
G
Step-by-step explanation:
Some points to note
- "is" means equal
- "times" means multiplication
- "quotient" means division
- "sum" is addition
Now, let's look at the left side of the equation.
It is "x + 5"
This means the sum of the number x and 5, or the number x plus 5
It eliminates F and J
Now, let's look at right side of equation.
It is "2(7+x)"
"7+x" is in brackets, so this is the sum of 7 and x. Then it is multiplied by 2. Thus, we can say:
"2 times the sum of 7 and x"
From the choices G and H left, we select G to be correct.
Answer:
I have no idea ask 567 9922 mathe teacher
Answer: 0.12
x is the number which is chosen
The number of ways to choose x from 1 to 100 is 100 (ways)
because x is divisible by 8 => x ∈ {8; 16;...; 96}
=> the number of terms divisible by 8 from 1 to 100 is (96 - 8)/8 + 1 = 12
the number of ways to choose x which is divisible by 8 is 12 (ways)
=> the probability that x is divisible by 8 is 12/100 = 0.12
Step-by-step explanation: