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BaLLatris [955]
3 years ago
13

can anyone help and explain why this is either proportional or not? urgent!! (it needs an explanation too)

Mathematics
1 answer:
Step2247 [10]3 years ago
4 0

Answer:

Yes it is proportional

Step-by-step explanation:

Notice how when x goes up 1 y goes up by 1.6. There is a pattern, if there is no pattern then you would see that numbers either go up or down with no pattern.

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The price of an item yesterday was $120. Today, the price fell to $66. Find the percentage decrease.
Akimi4 [234]

Answer:54

Step-by-step explanation: You simply minus $66 from $120. I am fairly sure that i am right. If my answer is wrong, then please forgive me.

8 0
3 years ago
A water tank holds 648 gallons but is leaking at a rate of 4 gallons per week. A second water tank holds 864 gallons but is leak
Paraphin [41]

Answer:

64 weeks, I hope it helps :)

5 0
3 years ago
Strengths and weaknesses of horizontal and vertical methods for adding and subtracting polynomial
enot [183]
Are you asking what are they, or what are you asking? 


4 0
3 years ago
A and B are centres of two circles of radii 8 cm and 1 cm such that AB =13 cm and angle ACB =90 degree where C is the centre of
Artyom0805 [142]

Answer:

50.28 sq. cm.

Step-by-step explanation:

A and B are centers of two circles of radii 8 cm and 1 cm such that AB =13 cm.

Now, angle ACB =90 degree where C is the center of another circle which touches the above two circles.

Now, ABC forms a right triangle where AB = 13 cm, AC = (r + 8) cm and BC = (1 + r) cm.

{Where r is the radius of the circle C.

Applying Pythagoras Theorem. AB² = AC² + BC²

⇒ 13² = (r + 8)² + (r + 1)²

⇒ 169 = r² + 16r + 64 + f² + 2r + 1

⇒ 2r² + 18r - 104 = 0

⇒ r² + 9r - 52 = 0

⇒ (r + 13)(r - 4) = 0

Hence, r = 4 {As the value of r can not be negative}

Therefore, the area of the circle C is π(4)² = 50.28 sq. cm. (Answer)

7 0
3 years ago
10 points! Please help ASAP.
DerKrebs [107]
Answer: Yes
Explanation:
120 % = 1.2

If Maxine is correct, then she spent 1.2
times the hours she did homework than last week.
15 ⋅ 1.2 = 18.0 = 18

15 hours ⋅ 1.2 = 18.0 hours = 18 hours
Maxine is correct
6 0
3 years ago
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