3 years ago

Please help me with the first two

1 answer:

6 0

The first one is 2.52 × 10 to the negative third power while the second one answers 1.11850 × 10 to the positive five power

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Solve w + (-2) = -18 for w<br><br> (10 pts, Correct gets brainliest!)

loris [4]

Answer:

w = -16

Step-by-step explanation:

w + (-2) = -18

Add 2 to each side

w-2+2 = -18+2

w = -16

6 0

3 years ago

A fridge costs €336 after a price increase of 40%. what was the original price

Mazyrski [523]

the original cost is "x", which is the 100% of the original price, and we also know that €336 is its price increased by 40%, namely 100% + 40% = 140%, so

$\begin{array}{ccll} amount&\%\\ \cline{1-2} x & 100\\ 336& 140 \end{array} \implies \cfrac{x}{336}~~=~~\cfrac{100}{140} \\\\\\ \cfrac{x}{336}=\cfrac{5}{7}\implies 7x=1680\implies x=\cfrac{1680}{7}\implies x=240$