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3 years ago

Through: (1, 3). slope = -2

Mathematics

1 answer:

Free_Kalibri [48]3 years ago

7 0

Answer:

5=b

y=-2x+5

Step-by-step explanation:

i aint never seen two pretty best friends its always one of em gotta be ugly

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Evaluate ( r - s) 3 + r 2 if r=8 s=5

Alchen [17]

The answer to this is 19

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3 years ago

Read 2 more answers

the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years

Yuliya22 [10]

Answer: 125 g

<u>Step-by-step explanation:</u>

$A = P_o\cdot e^{kt}\\\\\text{First, use the given information to find k:}\\\\\bullet A=\dfrac{1}{2}P_o\\\\\bullet k = unknown\\\\\bullet t=29\text{ years}\\\\\dfrac{1}{2}P_o=P_o\cdot e^{k(29)}\\\\\\\dfrac{1}{2}=e^{k(29)}\qquad divided\ both\ sides\ by\ P_o\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=ln\bigg(e^{k(29)}\bigg)\qquad applied\ ln\ to\ both\ sides\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=29k\qquad simplified-ln\ and\ e\ cancel\ out\\\\\\\dfrac{ln\bigg(\dfrac{1}{2}\bigg)}{29}=k\qquad divided\ 29\ from\ both\ sides\\\\\\-0.0239=k$

$\text{Now, use the following in the equation to solve for A:}\\\\\bullet A=unknown\\\bullet P_o=500\\\bullet k=-0.0239\\\bullet t=58\text{ years}\\\\A=500\cdot e^{(-0.0239)(58)}\\\\.\quad=500\cdot e^{-1.386}\\\\.\quad=125$

8 0

4 years ago

Y=(x+4)^2+4 in standard form

gogolik [260]

Answer:

y=x²+8x+20

Step-by-step explanation:

y=(x+4)^2+4

y=(x+4)² + 4

y=(x+4)(x+4)+4

Expanding the bracket

y=(x²+4x+4x+16)+4

y=x²+8x+16+4

y=x²+8x+20

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3 years ago

Height difference between 147m and 21m

pishuonlain [190]

[147m] pluse [21m]is equal to 168 meters

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3 years ago

Plz answer number 12 :)

TEA [102]

It’s a (the one on the top left), because the input and output values are correct in the table!

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3 years ago