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lesya [120]
3 years ago
10

Which statement could be proved false using a counterexample?

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
4 0
All acute angles are 30 degrees.
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If y varies inversely as the square of x and y=4 when x=5, find y when x is 2
Len [333]

need to kind K

Y=k x 1/x^2 = k/x^2

Find K when y=4 & x=5

Y=k/x^2 =

4=k/5^2=

4=k/25

K=4*25 =100

When x = 2

Y=100/2^2

Y=100/4

Y=25


5 0
3 years ago
Need help real fast please help really need it
Vladimir79 [104]

Answer:

burrito price=$8

Taco Price=$6

Step-by-step explanation:

x=burrito price

y=taco price

3x+4y=48

solve for y

y= −3 /4 x+12

plug in

6x+2y=60

6x+2( −3 /4 x+12)=60

6x+2( −3 /4 x+12)=60

x=8

now plug in for x

3x+4y=48

3(8)+4y=48

y=6

y=6

x=8

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Taco Price=$6

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Mouthwash costs $5.00 before tax and $5.30 after tax. what is the percentage of the tax
irinina [24]
6%(5) = .30  6%

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Help? Please.<br><br><br> (Svsggdgwgsshshsg)
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