Answer:
What do you mean ?? Say it clearly I really want to help you.
This is a ratio problem. First, we need to add the number of students polled.
7 + 4 + 3 + 6 = 20
Next, look at how many out of 20 students selected Science.
3 out of 20.
Say it this way:
3 is to 20 as ? is to 400.
Express it this way:
3/20 = x/400
Cross multiply to eliminate the denominators.
3 x 400 = 20 x Now solve for x.
1200 = 20 x
x = 60
Check it!
Does 60/400 reduce to 3/20? Yes!
60 students are predicted to select science out of 400
1) x^2 + 8x + 16 = (x+4)^2
Answer: C. 16
2) x^2 + 4x + 4 = (x+2)^2
Answer: B. 4
Answer:
7/5
Step-by-step explanation:
Slope formula = (y₂ - y₁) / (x₂ - x₁)
= (7 - 0) / (2 - (-3))
= 7 / (2 + 3)
= 7/5
Answer:
420 minutes
Step-by-step explanation:
7:30am to 2:30pm
=7:30to 14:30
=14.30-7.30=
7hours
in minutes;
7×60
= 420minutes
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