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3 years ago

Someone help please! Thank you^ explain the steps to get to the answer also. giving brainliest btw

Mathematics

1 answer:

Lana71 [14]3 years ago

8 0

The answer is 20 because her fence is 200 total so if you do 60 times 2 + 30 times 2 you get 180 200-180 = 20 sorry if i wrong

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Answer:

B & C

Step-by-step explanation:

$sin C = \frac{AB}{AC} = \frac{12}{13}$

$cosC=\frac{BC}{AC} = \frac{6}{10}$

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A teacher orders pizza for her classes. Each pizza costs 16.72. The delivery charge for the entire order is 9.00. The total cost

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Albert has $16 in savings at the beginning of a month. He then decides to save $8 every week. Which inequality represents the so

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Answer:

it w > 7

Step-by-step explanation:

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3 years ago

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PLEASE HELP ASAP !! (Picture included)

slega [8]

This is the question that's gonna put me over the top and make me a Brainly Genius. Of course working for free doing middle school math homework doesn't really sound like a genius, but I'm doing it anyway.

This one is the Pythagorean Theorem of course:

$(x+3)^2 + (x+4)^2 = (x+10)^2$

$x^2 + 6x + 9 + x^2 + 8x + 16 = x^2 + 20 x + 100$

$x^2 - 6x - 75 = 0$

The Shakespeare Quadratic Formula (2b or -2b) is a little shortcut for the quadratic formula when the middle term is even.

$x^2-2bx+c \textrm{ has zeros } x=b\pm \sqrt{b^2-c}$

So we get

$x = 3 \pm \sqrt{3^2 -(-75)} = 3 \pm \sqrt{84} = 3 \pm 2 \sqrt{21}$

The minus root is less than -6 giving negative sides, so we reject it and conclude

$x = 3 + 2 \sqrt{21}$

Choice C

When I hit Add I officially become a Genius. Maybe I should retire.

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4 years ago

What is the justification for each step in the solution of the equation?

scoundrel [369]

<span>13x−4=−9(4+3x)+12 Given
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13x−4=−24−27x Subtraction property [ -36 + 12 ] = -24
13x + 27x = -24 + 4 collecting like terms
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<span>as 13x + 27 x = 40x and -24 + 4 = -20
x=−1/2 Division Property of Equality
40x / 40 = x and 20 /40 = 1/2 </span>

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