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3 years ago

10

The temperature started at 82° and continued to rise at a rate of 0.6° each hour the temperature is now 85° determine the number

of hours,h, it took to reach 85°

1 answer:

Gnesinka [82]3 years ago

8 0

Answer:

5 hours

Step-by-step explanation:

Our goal here is 3 F because 82+3=85

Ok so you start at 82. For example, you can do 0.6×1=0.6 (no)

0.6×2=1.2 (no)

0.6×3=1.8 (no)

0.6×4=2.4 (no)

0.6×5=3 (yes)

82°+3°=85°

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How many days would it take for a tiger to eat a boar?

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2 years ago

2) -2(7n – 6) +n=-3 - 8n

iogann1982 [59]

<em>Answer and Step-by-step explanation:</em>

<em>For this equation the answer is : $n=3$ </em>

<em>Step 1 : Simplify both the sides of the equation :</em>

<em> $-2(7n-6)+n=-3-8n$ </em>

<em> $(-2)(7n)+(-2)(-6)+n=-3+-8n$ (Distribute)</em>

<em> $-14n+12+n=-3+-8n$ </em>

<em> $(-14n+n)+(12)=-8n-3$ (Combine the like terms)</em>

<em> $-13n+12=-8n-3$ </em>

<em> $-13n+12=-8n-3$ </em>

<em>Step 2 : Add " $8n$ " to both the sides :</em>

<em> $-13n+12+8n=-8n-3+8n$ </em>

<em> $-5n+12=-3$ </em>

<em>Step 3 : Subtract " $12$ " from both the sides :</em>

<em> $-5n+12-12=-3-12$ </em>

<em> $-5n=-15$ </em>

<em>Step 4 : Divide both the sides by " $-5$ "</em>

<em> $\frac{-5n}{-5} =\frac{-15}{-5}$ </em>

<em> $n=3$ </em>

<em />

<em>That's your final answer : $n=3$ </em>

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3 years ago

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djyliett [7]

Answer:

Exact circumference is $7\frac{49}{150}km$

Approximate circumference is $7.33 km$

Step-by-step explanation:

We are given;

The diameter of a circle as $2\frac{1}{3} km$

We are required to determine the exact and approximate circumference of the circle.

We know that the circumference of the circle is given by;
Circumference = πD, where D is the diameter

Taking π as 3.14

$Circumference=3.14 (2\frac{1}{3}km)$

$=7\frac{49}{150}km$

The exact circumference of the circle is $7\frac{49}{150}km$

$7\frac{49}{150}km=7.327 km\\ = 7.33 km (nearest hundredth)$

Thus, the approximate circumference of the circle is $7.33 km$

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