It is given in the question that, a rocket travels 2.8x10^4 km h^-1.
It means in one hour, the rocket travels
And we have to find how much the rocket travels in 5 hours, and for that we have to do multiplication, that is
Enter the number in standard form. 4.78 · 10-1
2 answers:
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Answer:
Equation of the line that passes through the point (-2,7) and has a slope of zero is given as
Step-by-step explanation:
Equation of line is given as
-----------(1)
Here
Substituting values in equation (1)
(a) Animals by popularity; Dogs, Cats, Others, Horses.
(b) If 250 students were interviewed, 20 students have other pets.
(c) No, it was incorrect.
Step-by-step explanation:
Step 1; We arrange the different pets in chronological order, from the highest percent to the lowest percent;
1. Dogs - 67%,
2. Cats - 20%
3. Others - 8%,
4. Horses - 1%.
None is not included in this list.
Step 2; If 250 students were interviewed, 8% of those have other pets. So we need to calculate how much 8% of 250 is.
8% of 250 = × 250 = 0.08 × 250 = 20.
So 20 students had other pets.
Step 3; 20% of the interviewed students had cats. If 75 students had cats, we need to equate 20% to the 75 and find out how many students were actually interviewed.
20% × x = 75, 0.2 × x = 75,
x = = 375.
So if 375 students were interviewed, 75 students would have cats. So the estimate of 250 students being interviewed is incorrect.