Answer:
24
Step-by-step explanation:
Answer:
Work backwards to solve this problem.
If he ends with 32 cookies, then subtract 12. That gives 20 cookies. 20*2 is 40, so now he has 40 cookies.
Answer:
$30+m($5 x h)
he will be working for 21 h
Step-by-step explanation:
So, Steve has $30, so you want to add that amount to the amount he earn, which is $105.
$5 times 21 is $105
h = 21
but we still need for m but, we already have m
m = $105
Answer: 2. It is likely that a confounding variable could be a contributing explanation for the difference between these two groups.
3. This is an observational study, not an experiment.
Step-by-step explanation:
Based on the information given, the statement that's true include:
• It is likely that a confounding variable could be a contributing explanation for the difference between these two groups.
• This is an observational study, not an experiment.
It is an observational study as the researcher observed just observed the scenarios without him trying to change the people that are being exposed to it or controlling it.
Therefore, the correct options are II and III only.
93. Perimeter of the trapezoid= 5+15+5+9=34 cm
Trapezoid of the trapezoid= 1/2(a+b)h=1/2(15+9)4=48 cm²
94. Perimeter=3+2+4+5+6=20 cm
Divide the figure into 2 small rectangles
Area of the first rectangle=3×2= 6 cm²
Area of the second rectangle=4×5=20 cm²
Area=20+6=26cm²