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2 years ago

14

Layla takes 190 milligrams of an antibiotic. Every hour, her body breaks down 10% of the drug. How much will be left after 5 hou

rs?
If necessary, round your answer to the nearest tenth.

1 answer:

RoseWind [281]2 years ago

5 0

95

Step-by-step explanation:

pleas make me the brainlist

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There are 250 students taking either band or chorus. If there are 180 students taking band and 60 students in both band and chor

Olegator [25]

Answer:

<em>There are </em><em>70</em><em> students only in chorus.</em>

Step-by-step explanation:

Total number of students is 250

Out of 250, 180 students took band.

And 60 took band and chorus, i.e this is the intersection of the 2 groups.

The Venn diagram is attached below.

So, the number of students who took only band = 180-60 = 120

Total number of students or sum of the 3 regions is 250.

So, the number of students who took only chorus = 250-180 = 70

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3 years ago

Which of the filling points can be found on the line 2x+7y=28

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3 years ago

Place the boxes in the correct location this Math problem 15 points

Snezhnost [94]

Answer:

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3 years ago

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Find two irrational numbers and two rational numbers between 0.5 and 0.552.

seropon [69]

Answer:

Rational: 0.51 and 0.52

Irrational: sqrt(.26) and sqrt(.27)

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2 years ago

Find an equation of the sphere which contains points A(1, 3, 2) and B(4, 3, 7) and the distance between A and B is equal to the

Marina86 [1]

Answer:

The answer is 8.5=(x-2.5)^2+(y-3)^2+(z-4.5)^2

Step-by-step explanation:

First we need to find diameter of the sphere. The distance point A and point B is:

$d=\sqrt{(4-1)^2+(3-3)^2+(7-2)^2} \\d=\sqrt{3^2+0^2+5^2} \\d=\sqrt{34} \\d=5.83$

d/2=r=2.92

radius of the sphere is 2.92 units

and the center of the sphere is:

C=((4+1)/2,(3+3)/2,(7+2)/2)

C=(2.5,3,4.5)

We can write the equation of the sphere as:

$r^2=(x-2.5)^2+(y-3)^2+(z-4.5)^2\\8.5=(x-2.5)^2+(y-3)^2+(z-4.5)^2$

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3 years ago