Would you rather work seven

Mathematics

1 answer:

raketka [301]3 years ago

6 0

Answer: $20 per day for seven days

Step-by-step explanation: I would rather get paid 20 dollars per day for seven days which would sum my total pay to about 140. If I were to work 2 the first day then double the previous days every day for a week then my total pay would be about 128 which is definitely a lower amount then 140.

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What multiplies to 16 and adds to negative 12

Romashka-Z-Leto [24]

Factor 16 and see the - factor pairs and add them, see which add to -12
-1-16=-17 nope
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hmm

we will solve with math
xy=16
x+y=-12
minus x both sides
y=-12-x
sub for y in other equation
x(-12-x)=16
-12x-x^2=16
add 12x+x^2 both sides
0=x^2+12x+16
use quadratic formula
if you have
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

0=x^2+12x+16
a=1
b=12
c=16

x= $\frac{-12+/- \sqrt{12^{2}-4(1)(16) }}{2(1)}$
x= $\frac{-12+/- \sqrt{144-64 }}{2}$
x= $\frac{-12+/- \sqrt{80}}{2}$
x= $\frac{-12+/- 4\sqrt{5}}{2}$
x= $\frac{-6+/- 2\sqrt{5}$
x= $\frac{-6+ 2\sqrt{5}$ or $\frac{-6- 2\sqrt{5}$

aprox
x=-1.52786 or -10.4721

those are the numbers

the numbes are -1.52786 or -10.4721

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3 years ago

Read 2 more answers

What is the answer to 30=-(7-x)?

Lemur [1.5K]

Step-by-step explanation:

$x = \frac{30}{7}$