2 years ago

What is the answer to the photo

Mathematics

2 answers:

Liono4ka [1.6K]2 years ago

8 0

112 maybe that's weird

Gnesinka [82]2 years ago

7 0

Answer:

96 is the answer maybe of it

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Julie wrote the rate $108 in 6 weeks as a unit rate. Find her mistake and correct it.

Goshia [24]

Julie wants to express $108 in 6 weeks as a unit rate.

Her errors are:
$108 = $54 (Not true)
6 weeks = 3 weeks (Not true).

Instead,
$\frac{\$108}{6\,weeks} \\ = \frac{\$54 \times 2}{3\,weeks \times 2} \\ = \frac{\$54}{3\,weeks} \\ =18 \, \frac{\$}{week}$

The correct unit rate is 18 $/week.

6 0

2 years ago

A particle decays at a rate of 0.45% annually. assume and initial amount of 300 mg. (

raketka [301]

The increase is an exponential increase in a multiplier
$100%+0.45%=100.45%$ and as decimal 1.0045

Final Value = Initial Value × $multiplier^{number of years}$
Final value = $300(1.0045)^{60}$
Final value = 393 mg (to the nearest whole number)

Half life = 0.5 years
Final value = $300(1.0045)^{0.5}$ =301 mg