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3 years ago

10

A phone has 5/8 of its battery charge left. If the battery loses 3/8 of its full charge every hour, how many hours will the batt

ery last?PLSSSS HURRYY

1 answer:

Marianna [84]3 years ago

3 0

Answer:

An hour and 45 minutes

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ANSWER NOW AND YOU GET 20 and ill answer one of ur questions

Lynna [10]

Answer: b now could u help with mines?

Step-by-step explanation:

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3 years ago

Let r3 have the euclidean inner product. let u = (-1, 1, 1) and v = (-7, 6, 15). if ||ku + v||= 7, what is k? give the exact ans

amm1812

Ma $k\mathbf u+\mathbf v=k(-1,1,1)+(-7,6,15)=(-k-7,k+6,k+15)$

Recall that for a vector $\mathbf x\in\mathbb R^n$ , we have $\|\mathbf x\|=\sqrt{\mathbf x\cdot\mathbf x}$ . So we have

$\|k\mathbf u+\mathbf v\|=\sqrt{(k\mathbf u+\mathbf v)(k\mathbf u+\mathbf v)}=7$
$\implies k^2\mathbf u\cdot\mathbf u+2k\mathbf u\cdot\mathbf v+\mathbf v\cdot\mathbf v=49$
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3 years ago

If f(x) = 3x^2 – 2x + 4 and g(x) = 5x^2 + 6x – 8, find (f - g)(x).

meriva

Answer:

$-2x^2-8x+12$

Step-by-step explanation:

$f-g=(3x^2-2x+4)-(5x^2+6x-8)=3x^2-2x+4-5x^2-6x+8=\\ =-2x^2-8x+12$

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3 years ago

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Use a translation of(x,y) (x+2,y-3). What's the image of D(4,7)

lyudmila [28]

Answer:

(6,4)

Step-by-step explanation:

(4+2,7-3)=(6,4)

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3 years ago

Find the rate of change and interpret the rate of change.

FromTheMoon [43]

Answer:

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Step-by-step explanation:

seed 1 =10

changes =

3 + 4=7

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2 years ago

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