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Alborosie
3 years ago
7

Add me noahlemonhead

Mathematics
2 answers:
Kamila [148]3 years ago
7 0

Answer:ok

Step-by-step explanation:

GrogVix [38]3 years ago
3 0

Answer:

k

Step-by-step explanation:

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-7(-5v-3u 4) use the distributive property to remove the parentheses
Marrrta [24]
Distributeiv poepty
a(b+c)=ab+ac

remember that (-) times (-)=(+)
and (+) TIMES (-)=(-)

SO
<span>-7(-5v-3u+4)=(-7)(-5v)+(-7)(-3u)+(-7)(4)=35v+21u-28</span>
3 0
3 years ago
If you have an email that is stressing you out and you sleep on it before emailing it, you have shown which character trait?
natulia [17]
Answer:

Self-control

Why:

Most people would feel pressured to respond to an email, you are showing self-control by resisting the urge.
3 0
3 years ago
four survivors in a lifeboat have enough water for 12 days. calculate how long the water would have lasted if there had 6 people
algol [13]
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3 0
3 years ago
When an amount of heat Q (in kcal) is added to a unit mass (kg) of a
lisov135 [29]

Answer:

The change in temperature per minute for the sample, dT/dt is 71.\overline {6} °C/min

Step-by-step explanation:

The given parameters of the question are;

The specific heat capacity for glass, dQ/dT = 0.18 (kcal/°C)

The heat transfer rate for 1 kg of glass at 20.0 °C, dQ/dt = 12.9 kcal/min

Given that both dQ/dT and dQ/dt are known, we have;

\dfrac{dQ}{dT} = 0.18 \, (kcal/ ^{\circ} C)

\dfrac{dQ}{dt} = 12.9 \, (kcal/ min)

Therefore, we get;

\dfrac{\dfrac{dQ}{dt} }{\dfrac{dQ}{dT} } = {\dfrac{dQ}{dt} } \times \dfrac{dT}{dQ} = \dfrac{dT}{dt}

\dfrac{dT}{dt} = \dfrac{\dfrac{dQ}{dt} }{\dfrac{dQ}{dT} } = \dfrac{12.9 \, kcal / min }{0.18 \, kcal/ ^{\circ} C }   = 71.\overline 6 \, ^{\circ } C/min

For the sample, we have the change in temperature per minute, dT/dt, presented as follows;

\dfrac{dT}{dt}  = 71.\overline 6 \, ^{\circ } C/min

8 0
2 years ago
What’s the evaluation to 5x(2) + x for x =3
Mashcka [7]

Answer:

48

Step-by-step explanation:

5 x^2 +x

Let x = 3

5 * 3^2 +3

Exponents first

5 * 9+3

Multiply next

45+3

48

5 0
3 years ago
Read 2 more answers
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