PLS HELP

1 answer:

4 0

This question you are asking is confusing...ask your parents to help you decipher the words first because I don’t understand what your asking means.

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The altitudes of a triangle _______ go through the vertices?

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Never because I had this question and saw it on khan

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How many 2/3 are in 3 1/3

NeTakaya

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3 years ago

-7r^2= -329 square root property

Genrish500 [490]

9514 1404 393

Answer:

r = ±√47

Step-by-step explanation:

-7r^2 = -329 . . . . given

r^2 = 47 . . . . . divide both sides by -7 (multiplication property of equality)

r = ±√47 . . . . square root both sides (square root property of equality)

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2 years ago

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This is a Differential Equations problem, I only need help on part 1 from question five. I need steps as well, thank you.

jolli1 [7]

Answer:

a) $y(t) = \sqrt{2t + 1 }$

b) 1.5 hours after thickness will be 2 inches.

Step-by-step explanation:

$\frac{dy}{dt} = \frac{1}{y} \\ \\ ydy = dt \\ \\ integrating \: both \: sides \\ \\ \int y \: dy = \int 1 \: dt \\ \\ \frac{ {y}^{2} }{2} = t + c \\ \\ {y}^{2} = 2t + 2c \\ \\ y (t)= \sqrt{2t + 2c} ...(1) \\ \\ a) \: \: \: plug \: t = 0 \: in \: (1) \\ \\ y (0)= \sqrt{2(0) +2 c} \\ \\ y (0)= \sqrt{0 +2 c} \\ \\ 1 = \sqrt{2c} \: \: ( \because \: y (0)=1) \\ \\ 2c = 1 \: \implies \: c = \frac{1}{2} \\ \\ plug \: c = \frac{1}{2} \: in \: (1) \\ \\ y(t) = \sqrt{2t + 2 \times \frac{1}{2} } \\ \\ \huge \: \red {y(t) = \sqrt{2t + 1 } } \\ \\b) \: \: plug \: y(t) = 2 \: in \: above \: equation \\ \\ 2 = \sqrt{2t + 1} \\ \\ 4 = 2t + 1 \: \\ (squaring \: both \: sides) \\ \\ 4 - 1 = 2t \\ \\ 2t = 3 \\ \\ t = \frac{3}{2} \\ \\ t = 1.5 \: hours \\$

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2 years ago

Yesterday, Julie’s bank account balance was –$10.28. She deposited some money into her account so that her balance is now $39.89

Tcecarenko [31]

10.28+39.89=50.17

hope this helps

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3 years ago

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