3 years ago

Which of the following requires a proof?

Mathematics

1 answer:

zmey [24]3 years ago

8 0

Therorem requires proof.

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lorasvet [3.4K]

Answer: #13 you need to know that the sides are equal. #14 (7,6)

Step-by-step explanation: #14 in picture

4 0

2 years ago

Can someone lend me a hand pleeeeeeeaaaaseeee :D

MrRissso [65]

Answer:

2x^2 +11

Step-by-step explanation:

f(x) = 3x^2 +2

g(x) = x^2 -9

f(x) - g(x) = 3x^2 +2 - (x^2 -9)

Distribute the minus sign

= 3x^2 +2 -x^2 +9

Combine like terms

= 2x^2 +11

5 0

2 years ago

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lesantik [10]

$\bf \begin{array}{ccll} oz&calories\\ \cline{1-2} 6&90\\ 64&x \end{array}\implies \cfrac{6}{64}=\cfrac{90}{x}\implies \cfrac{3}{32}=\cfrac{90}{x}\implies 3x=2880 \\\\\\ x=\cfrac{2880}{3}\implies x=960$

3 0

2 years ago

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What is the 7 term in the sequence below?<br> 3, 12, 48, 192, ...

avanturin [10]

Answer:

12288

Step-by-step explanation:

its a geometric sequence where each term is 4 x the term before it

so the 7th term = 3 *4^6 = 12288

7 0

2 years ago

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Find two consecutive whole numbers such that the sum of their squares is 221.

Law Incorporation [45]

$n^2+(n+1)^2=2n^2+2n+1=221$
$2n^2+2n=220$
$n^2+n=110$
$n^2+n-110=0$
$(n-10)(n+11)=0\implies n=10,n=-11$

But since $n$ must be a whole number, we ignore $n=-11$ . So the two integers are $n=10$ and $n+1=11$ .

7 0

2 years ago