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Norma-Jean [14]
3 years ago
8

Use the Distributive Property to find (z - 5) (z - 3)

Mathematics
2 answers:
iren [92.7K]3 years ago
4 0

Answer:

z^2 - 8z + 15

Step-by-step explanation:

hope this helps <3

Anna007 [38]3 years ago
3 0

Answer:

z = -8

Step-by-step explanation:

subtrat -5 from -3 and you should get -8. I'm bad at explaining I'm sorry but I hope this helps. My work is shown in the image attacteched to this.

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If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time ca
aleksandr82 [10.1K]

Answer:

(a)8.0mg

(b)36.87 hours

(c)-0.168

Step-by-step explanation:

The amount of Valium in that person's bloodstream at any time can be modeled with the exponential decay function A ( t ) = 10 e^{ -0.0188 t (t in hours)

(a)After 12 Hours

A ( 12) = 10 e^{ -0.0188*12}\\=7.98\\\approx 8.0 mg $(to the nearest tenth of a milligram)

(b)If A(t)=5mg

Then:

5= 10 e^{ -0.0188 t}\\$Divide both sides by 10\\0.5=e^{ -0.0188 t}\\$Take the natural logarithm of both sides\\ln (0.5)=-0.0188 t\\t=ln (0.5) \div (-0.0188)\\$t=36.87 hours (to two decimal places.)

(c)

A ( t ) = 10 e^{ -0.0188 t}\\A'(t)=10(-0.0188)e^{ -0.0188 t}\\A'(t)=-0.188e^{ -0.0188 t}\\$At 6 hours, the rate at which the amount of Valium is decaying therefore is:\\A'(6)=-0.188e^{ -0.0188*6}\\$=-0.168 ( to three decimal places)

3 0
3 years ago
Write an inverse variation equation that relates x and y. With x being 10 and y being 2
yulyashka [42]

Answer:x=20/y

Step-by-step explanation:

x α 1/y

removing the constant of proportionality sign α and replace it with =k

x = k/y

x=10 y=2

10 = k/2

Cross multiply

10x2=k

20=k

k=20

Substitute k=20 in x=k/y

x=20/y.........required equation

7 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
kiruha [24]

Answer:

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Rectangular pyramid: 8

Rectangular prism: 12

6 0
3 years ago
I need correct answers asap, if you have Inst4gr4m and you're good at math and can help me with 28 m0re questions, I'll be so mu
tensa zangetsu [6.8K]

Answer:

6 hours

Step-by-step explanation:

Research is 5%, Games is 25%, so the diffrence is 20%

20%  of 30 hours = 30 x2/10 = 6 hours

Tremaine played 6 hours more video games than research.

3 0
3 years ago
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Answer:

B

Step-by-step explanation

3 0
3 years ago
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