3 years ago

I need help with this

Mathematics

1 answer:

Phoenix [80]3 years ago

7 0

Answer:

what do you need help with

Step-by-step explanation:

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How do I have the quotient for 5 divided by 7/8

asambeis [7]

5 / 7/8 is the same as doing 5 times the reciprocal of 7/8, or
5 • 8/7.

And since 5 is really 5/1, we can just multiply the two fractions together as you would usually do.

5/1 • 8/7 = 5•8/1•7 = 40/7

Answer is 40/7

7 0

4 years ago

Francium has a decay rate of 50% every 22 minutes. How much of an initial amount of 4.8 grams would be left after 88 minutes?

Jlenok [28]

Answer:

0.65g

Step-by-step explanation:

Decay rate = 50%

Decay rate = 0.5

$A = Aoe {}^{ - kt}$

where Ao = initial amount at start, k = rate of decay or growth, t = time, e = euler's number and A = value at time 't'

Ao = 4.8

t = 88/44 = 4

k = 0.5

substitute these values in the equation

$A = 4.8e {}^{ - 0.5 \times 4}$

$A = 0.6496$

$A = 0.65 \: (2dp)$

5 0

3 years ago

3.8 repeating as a fraction

tester [92]

Ans=3.77777777...
hope this helps

4 0

3 years ago

Find the distance between (-1,-5) and (4,3)

yawa3891 [41]

Answer:

$\sqrt{89}$ = 9.83

Step-by-step explanation:

$\sqrt{89}$

$\sqrt{25 + 64} \\\sqrt{5^2 + 8^2}$

7 0

3 years ago

What is the annual gross for a person who earns a weekly salary of $560? *<br> Your answer

aleksandr82 [10.1K]

Answer:

$29,220 per year

Step-by-step explanation:

$560 per week × 52.18 weeks = $29,220 per year.

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3 years ago