(WORTH 20 POINTS ANSWER ASAP)

Mathematics

1 answer:

Volgvan2 years ago

8 0

The answer is B i think

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Solve for y y-(-5)=-7

romanna [79]

Y - (-5) = -7
---------------------------
Simplify
y + 5 = -7
-------------------------------------
Subtract 5 from each side
y + 5 - 5 = -7 - 5
y = -12
--------------------------------------------
y = -12 is your answer

7 0

2 years ago

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Been stuck on this problem help?

kramer

Answer:

C. x < 40

Step-by-step explanation:

x/5 - 3 < 5

x/5 -3 + 3 < 5 + 3

x/5 < 8

(5/1) x/5 < 8 (5/1)

x < 40

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2 years ago

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2x10^-4 - 1x10^-5 show work. I got an answer of 1.9x10^-4,

oksian1 [2.3K]

$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------$

$\bf 2\times 10^{-4}-1\times 10^{-5}\implies 2\cdot \cfrac{1}{10^4}-1\cdot \cfrac{1}{10^5}\impliedby 
\begin{array}{llll}
\textit{using the LCD}\\
of~10^5
\end{array}
\\\\\\
\cfrac{2}{10^4}-\cfrac{1}{10^5}\implies \cfrac{(10\cdot 2)~-~(1\cdot 1)}{10^5}\implies \cfrac{20-1}{10^5}\implies \cfrac{19}{10^5}
\\\\\\
19\cdot \cfrac{1}{10^5}\implies 19\times 10^{-5}$

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2 years ago

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What is the answer for 14a³ - 22a we have to Factorise it

sveta [45]

Answer: 2a (7a² - 11).

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2 years ago

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Raniyah lived in Spain and Colombia for a total of 12 months in order to learn Spanish. She learned an average of 104 words per

Nadya [2.5K]

Step-by-step explanation: