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3 years ago

13

The outside temperature at midnight was 3.4°C. The temperature then changed at a constant rate of -0.78°C per hour for 8 hours.

What was the outside temperature at 8:00 AM?

1 answer:

Xelga [282]3 years ago

5 0

Answer:9.64

Step-by-step explanation:

smart :!

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If y=1/2 when x=2, find y when x=3, given that y varies directly with x

Lelu [443]

$\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=\frac{1}{2}\\
x=2
\end{cases}\implies \cfrac{1}{2}=k2\implies \cfrac{1}{4}=k
\\\\\\
\boxed{y=\cfrac{1}{4}x}
\\\\\\
\textit{when x=3, what is \underline{y}?}\qquad y=\cfrac{1}{4}\cdot 3$

4 0

3 years ago

Business Loss A company loses $40 as a result of a shipping delay. The 2 owners of the company

frozen [14]

Answer:

b

Step-by-step explanation:

3 0

3 years ago

Which expression is equivalent to 2(m − 5) + 6?

Dahasolnce [82]

Answer: 2m-4

Step-by-step explanation:

2(m-5)+6

=2m-10+6

=2m-(10-6)

=2m-4

Hope this helps!! :)

Please let me know if you have any question

7 0

4 years ago

Read 2 more answers

Tina was asked to determine the possible dimensions of a given rectangle whose area is 12a4b3-18a6b3-72a7b3. Tina stated that th

Rufina [12.5K]

Answer:

Tina is correct

Step-by-step explanation:

Given

$Area = 12a^4b^3 - 18a^6b^3 - 72a^7b^3$

Required

State if $3a^4b^3(4-6a^2-24a^3)$ is a possible dimension

To do this, we simply expand $3a^4b^3(4-6a^2-24a^3)$

$3a^4b^3(4-6a^2-24a^3)$

$3a^4b^3 * 4-3a^4b^3 * 6a^2-3a^4b^3 * 24a^3$

$12a^4b^3 - 18a^{4+2}b^3 * -72a^{4+3}b^3$

$12a^4b^3 - 18a^{6}b^3 * -72a^{7}b^3$

By comparison, the result of the expansion

$12a^4b^3 - 18a^{6}b^3 * -72a^{7}b^3$

and the given expression

$Area = 12a^4b^3 - 18a^6b^3 - 72a^7b^3$

are the same.

<em>Hence, Tina is correct</em>

7 0

3 years ago

Write your own problem that would give the following answer:

Archy [21]

Answer:

i don't know but good luck with that

Step-by-step explanation:

sorry

4 0

3 years ago