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Natasha_Volkova [10]
2 years ago
11

Find the value of x? Please help?

Mathematics
1 answer:
quester [9]2 years ago
6 0

Answer:

x=7

Step-by-step explanation:

x+5=3x-9

<u>    +9    +9</u>

x+14=3x

<u>-x       -x</u>

<u>14=2x (divide by 2)</u>

   2

7=x

Check answer:

<u>7+</u>5= 12 (substitue x)

3(7)-9= 12 (substitute x)

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hichkok12 [17]

Answer: \dfrac{dT(t)}{dt}=77\times (450-T)

Step-by-step explanation:

Given

The temperature of the liquid is 75^{\circ}F placed in an oven with temperature of 450^{\circ}F.

Initially difference in temperature of the two

\Delta T=450-75\\\Rightarrow \Delta T=375^{\circ}F

According to the question

\Rightarrow \dfrac{dT(t)}{dt}=77\cdot \Delta T\\\\\Rightarrow \dfrac{dT(t)}{dt}=77\times (450-T)\quad [\text{T=75}^{\circ}F\ \text{at t=0}]

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Step-by-step explanation:

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3 years ago
The fourth-grade class donated 750 bottles of water for a 5K run. After the run, there were 89 bottles left. How many bottles of
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Step-by-step explanation:

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4 0
1 year ago
Horatio wants to ship a batch of 8 machine parts. The packaging for each part weighs 2 pounds. If each part weighs x pounds, whi
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Here is what we know:
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