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3 years ago

*4.8.21

Mathematics

1 answer:

pickupchik [31]3 years ago

5 0

Answer:

19.9 days

Step-by-step explanation:

The amount remaining after d days is ...

a = (1/2)^(d/7)

We want to find d when a = 0.14

log(a) = (d/7)log(1/2)

d = 7·log(0.14)/log(1/2) ≈ 19.855 ≈ 19.9

The farmers need to wait about 19.9 days for it to be safe.

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How can I solve this problem?

irina [24]

5x + 5x +3x (like terms)
13x-60=180
180+60=240
240/13=18.4615
X=18.4615

I hope this is correct.
(There are so many different ways to do math problems like this) I hope I could help... sorry if I didn’t.

6 0

2 years ago

Find c, the hypotenuse, rounded to four decimal places, in a right triangle with b = 16 and B = 55

Fudgin [204]

Answer:

c=19.5324

Step-by-step explanation:

In given triangle ABC, we have been give values of angle B=55 degree, angle C is right angle and b=16.

Now using those values, we need to find the value of side b.

apply formula of sin

$\sin\left(B\right)=\frac{AC}{AB}$

$\sin\left(55\right)=\frac{16}{c}$

$0.819152=\frac{16}{c}$

$0.819152c=16$

$c=\frac{16}{0.819152}$

$c=19.5323944762$

Hence final answer rounded to four decimal places is c=19.5324

4 0

3 years ago

Jerry has 61 percent on khan. She needs to get 100 percent in one week. How much percent should she get each night to reach her

vova2212 [387]

Answer:

She would need to complete 5.57 each noght to reach her goal of 100%.

Step-by-step explanation:

39/7 is equal to 5.57

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3 years ago

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nexus9112 [7]

Answer:

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Step-by-step explanation:

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3 years ago

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algol13

Answer:

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Step-by-step explanation:

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