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3 years ago

Simplify:-3(x-4)+7(4-x)-2(8x-10)

Mathematics

1 answer:

olga55 [171]3 years ago

3 0

Answer:

$-26x+60$

Step-by-step explanation:

First I like to write the whole equation.

$-3(x-4)+7(4-x)-2(8x-10)$

Now we should distribute where ever we see it's needed.

$-3x+12+28-7x-16x+20$

Next we combine the like terms.

$-26x+60$

That's it there's nothing else we can do now, it's in simplest form.

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A fluid initially at 100◦C is placed outside on a day when the temperature is −10◦C, and the temperature of the fluid drops 20◦C

IRISSAK [1]

Answer:

Temperature drops to -10 deg C after 5.5 minutes and remains at that temperature.

Step-by-step explanation:

$t_{1} = 1, T_{1} = 80\\\\t_{2} = 2, T_{1} = 60\\\\t_{3} = 3, T_{3} = 40\\\\t_{4} = 4, T_{4} = 20\\\\t_{5} = 5, T_{5} = 0\\\\t_{6} = 6, T_{6} = -10\\\\t_{7} = 7, T_{7} = -10\\\\t_{8} = 8, T_{8} = -10\\\\t_{9} = 9, T_{9} = -10\\\\t_{10} = 10, T_{10} = -10\\$

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4 years ago

Simplify each equation <br> (x^4)(x^2)

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$( x^{m} )(x^{n})=x^{m+n}$ so

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answe ris x^6

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3 years ago

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Step-by-step explanation:

Given

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If the growth rate is $=0.5$

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$P_1=100(1+0.5)$

similarly $P_2=100(1+0.5)^2$

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3 years ago

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Step-by-step explanation:

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Sliva [168]

Answer:

$\large\boxed{C.\ \left|-\dfrac{1}{4}-\dfrac{3}{4}\right|}$

Step-by-step explanation:

$\text{The formula of a distance between x and y on a number line:}\\\\d=|b-a|=|a-b|\\\\\text{We have}\ a=-\dfrac{1}{4}\ \text{and}\ b=\dfrac{3}{4}.\ \text{The distance:}\\\\d=\left|-\dfrac{1}{4}-\dfrac{3}{4}\right|=\left|\dfrac{3}{4}-\left(-\dfrac{1}{4}\right)\right|$

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