Answer:
area of P=πr^2
area of Q=πr^2/4=π×400/4=100π
acc to ques
A(q)=4× A(p)
100π=4×πr^2.
100=4r^2
r^2=25
radius of p= √25=5cm
Answer: (7/10, 4 1/5)
Explanation:
y = 6x
y = -4x + 7
6x = -4x + 7
10x = 7
x = 7/10
y = -4(7/10) + 7
y = -28/10 + 7
y = 4 1/5
Answer:
see below
Step-by-step explanation:
Since 2x appears on the left side of both equations, that term can be eliminated by subtraction, which is what the first choice suggests.
The result will be ...
3y = 7 -4y +5 . . . . . . . . . second equation subtracted from the first
7y = 12 . . . . . . add 4y
y = 12/7 . . . . . . divide by 7
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However, the fact that 2x is by itself on the left side of the second equation suggest that <em>substitution</em> may also be a good option. Perhaps an equally good first step is to use the expression in the second equation to substitute for 2x in the first:
(4y -5) +3y = 7
Either way, the resulting equation is 2-step.
7y = 12 . . . add 5
y = 12/7 . . . divide by 7
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The other suggested "first steps" do nothing useful.
1)150.00*112=16,800
2)54,000*5%=2,700
2,700+1,200=3,900
I do no know the 3rd one tho im sorry
could you explain a bit more?