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LiRa [457]
2 years ago
14

W=-2, x = 3, y=0,z = -1/2 z/w+x​

Mathematics
1 answer:
Shtirlitz [24]2 years ago
4 0

Answer:

13/4

Step-by-step explanation:

z/w + x

(-1/2)/-2 + 3

-1/2 × -1/2 + 3

1/4 + 3

13/4

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20. Suppose you need to re-administer this injection at the point when the concentration is less than 0.5%. If the first injecti
IceJOKER [234]
Given that the function

C(h)=\frac{2h^2+5h}{h^3+8}

models the concentration of a medication in the bloodstream (as a percent), hours (h) after its injection into muscle tissue.

The number of hours it will take for the concentration of the injection to be less than 0.5% is given by:

0.5\ \textgreater \ \frac{2h^2+5h}{h^3+8} \\ \\ \Rightarrow0.5(h^3+8)\ \textgreater \ 2h^2+5h \\ \\ \Rightarrow h^3+8\ \textgreater \ 4h^2+10h \\ \\ \Rightarrow h^3-4h^2-10h+8\ \textgreater \ 0 \\ \\ \Rightarrow h\ \textgreater \ 5.54

Given that the first injection was given at 8:00 am, the time the next injection should be given is 2 pm.
8 0
3 years ago
What’s the diameter of this object?
Ahat [919]

Answer:

1.6 feet

Step-by-step explanation:

The radius is 1/2 of the diameter.

0.8 * 2 = 1.6

3 0
3 years ago
Read 2 more answers
Please help me and show your work! 7th grade math
MrMuchimi
Net? 

I think we're being asked for the area of the shape.

2 4x4 squares and four 6x4 rectangles 

2(4)(4) + 4(6)(4) = 32 + 96 = 128 square feet (that a lot of cardboard)




5 0
3 years ago
Determine if the two triangles are congruent. if they are, state how you know.
Sonbull [250]

Answer:

they are congruent

Step-by-step explanation:

they have the same points

8 0
3 years ago
PLEASE HELP. NO LINKS. NEED REAL EXPLANATION.
Sveta_85 [38]

Answer:

Area: 28.26ft², Circumference: 18.84ft

Step-by-step explanation:

Area of a circle: πr²

Circumference of a circle: πd (or 2πr)

Since the diameter is 6ft, then the radius is half of that, which is 3ft. This means that our area is:

πr²

π(3)²

π(9)

9π

9(3.14)

28.26ft²

Our circumference is:

πd

π(6)

6π

6(3.14)

18.84 ft

5 0
3 years ago
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