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3 years ago

-2(1-8r)=-82 Can you give me the answer please

Mathematics

1 answer:

AURORKA [14]3 years ago

8 0

Answer:

$r = - 5$

Step-by-step explanation:

$- 2(1 - 8r) = - 82 \\ - 2 + 16r = - 82 \\ 16r = - 80 \\ \frac{16r}{16} = \frac{ - 80}{16} \\ r = - 5$

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How to answer number 10

Ipatiy [6.2K]

You were on the right track.

(17/4)*(11/4)*(3/1)

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561 / ?

next multiply the denominators

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2 years ago

Consider the quadratic function:

sdas [7]

Answer:

Step-by-step explanation:

I'm not sure how you are finding this in class, but the easiest way by far is to use the expressions for h and k:

$h=\frac{-b}{2a}$ and

$k=c-\frac{b^2}{4a}$

(Just a fun fact: Those expressions come from the quadratic formula that help us to factor a quadratic equation.)

Filling in for h:

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Filling in for k:

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You would also find this if you completed the square. But again, I'm not sure how you're solving for the vertex in class.

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2 years ago

Can someone please do this i suck at math

Wittaler [7]

Answer:

Width = y + 7x

Step-by-step explanation:

Area of the rectangle = ${y}^{2} + 8xy + 7 {x}^{2}$

Length of the rectangle = $y + x$

Lets factorise ${y}^{2} + 8xy + 7 {x}^{2}$

$= > {y}^{2} + xy + 7xy + {x}^{2}$

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2 years ago

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Yakvenalex [24]

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2 years ago

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mihalych1998 [28]

Answer:

10.7cm

Step-by-step explanation:

x^2= 115

x = √115

x = 10.7

5 0

2 years ago