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zlopas [31]
3 years ago
7

Please help me with this question ☝️☝️

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Answer:

\frac{-4}{5}

Step-by-step explanation:

\frac{-4}{15}* 3 = -4/5

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Find f (2b^2) for (x)=x^2-4x
BlackZzzverrR [31]

Answer:

A

Step-by-step explanation:

We are given the function:

f(x) = x^2 - 4x

And we want to find:

\displaystyle f(2b^2)

Substitute:

\displaystyle f(2b^2) =(2b^2)^2 -4(2b^2)

And evaluate:

\displaystyle \begin{aligned}  f(2b^2) &=(2b^2)^2 -4(2b^2) \\ &=(4b^4) +(-8b^2) \\ &= 4b^4 - 8b^2 \end{aligned}

In conclusion, our answer is A.

7 0
3 years ago
Square is 19 yd.² what is the length of each side
olga_2 [115]
the answer is 4.36yds. 4.36 ×4.36= 19.006
6 0
3 years ago
Does anyone know 20=b/3 is in a one step equation
inna [77]

Answer:

b=60

Step-by-step explanation:

All you have to do in this equation is multiply both sides by 20 as we want to have the variable b on one side by itself. Doing this we get 60=b.

4 0
3 years ago
Read 2 more answers
Find the cube root of 216
andre [41]
6 is the cube root of 216.

I hope this helps! :D
7 0
2 years ago
Read 2 more answers
A licensed nurse practitioner is instructed to give a patient 2700 milligrams of an antibiotic over a period of 48 hours. If the
9966 [12]

Answer:

337.5 mg

Step-by-step explanation:

A licensed nurse practitioner is instructed to give a patient 2700 milligrams of an antibiotic over a period of 48 hours. If the antibiotic is to be given every 6 hours

Hence: the number of doses or times the antibiotic would be administered =

48 hours/6 hours = 8 doses(times)

The amount of antibiotic that should be given in each dose is:

48 hours = 2700 mg

6 hours = x mg

Cross Multiply

48x = 2700 mg × 6 hours

x = 2700mg × 6/48

x = 2700/8

x = 337.5 mg

6 0
2 years ago
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