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s2008m [1.1K]
3 years ago
5

Tracy ran a lap around the school track in 74.2 seconds. Malcolm ran a lap in 65.92 seconds. Estimate the difference in the time

s in which the students completed the lap.
Mathematics
1 answer:
Finger [1]3 years ago
5 0

Answer:

8.28 is the difference in times in which the students completed the lap.

Step-by-step explanation:

Subtract 74.20 and 65.92 and that gives you your answer.

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If (x-10) is a factor of the polynomial P(x), which of the following do we know to be true?
Anon25 [30]

Answer:

Option 3, p(0) = -10

Option 4, p(10) = 0

Step-by-step explanation:

<u>Step 1:  Check</u>

x - 10 + 10 = 0 + 10

<em>x = 10</em>

f(0) = 0 - 10 = -10

x = -10

<em>p(10) = 0</em>

Answer:  Option 3, p(0) = -10, Option 4, p(10) = 0

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3 years ago
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Ivahew [28]

Answer:

The correct answer is option 3

2⁻¹⁰ and 1/1024

Step-by-step explanation:

Points to remember

1). ( xᵃ)ᵇ = xᵇ

2).  x⁻ᵃ = 1/xᵃ

It is given that, (2⁵)⁻²

<u>To find the equivalent of (2⁵)⁻²</u>

(2⁵)⁻² =  2⁻¹⁰

<u>To find the value of 2⁻¹⁰</u>

2⁻¹⁰ = 1/2¹⁰

2¹⁰ = 1024

1/2¹⁰ = 1/1024

Therefore the correct answer is 3rd option

2⁻¹⁰ and 1/1024

5 0
3 years ago
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Calculate the heat required to melt 1 g of gold at its melting point. The specific heat of fusion for gold is 64.5×103 J/kg.
Galina-37 [17]

Answer:

64.5J

Step-by-step explanation:

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Q = (1/1000)kg X 64.5x10^3 J/kg

Q = 64.5 J

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Aliun [14]

Answer:

<em>19.75</em>

Step-by-step explanation:

<em>1/4=0.25 </em>

<em>2/4=0.50 </em>

<em>3/4=0.75</em>

<em>so 0.75+19=19.75</em>

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4 years ago
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