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Shkiper50 [21]
3 years ago
8

I need help with this as well

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
7 0

Answer:

I think this is the answer

Area 77cm2

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15y^-11/3y^-11, show steps I need help please don't understand how to do it.
tester [92]
One may note, you never quite asked anything per se, ahemm, if you meant simplification.

\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}}}}\\\\
-------------------------------\\\\
\cfrac{15y^{-11}}{3y^{-11}}\implies \cfrac{15}{3}\cdot \cfrac{y^{-11}}{y^{-11}}\implies 5\cdot y^{-11}\cdot y^{+11}\implies 5\cdot y^{-11+11}
\\\\\\
5y^0 \implies \boxed{5}
8 0
3 years ago
Aisha worked 8 3/4 hours on thursday and 7 2/4 hours on friday. how many hours did she work during these days?
Nata [24]
8+7+3/4+2/4
= 15 5/4
= 16 1/4
8 0
3 years ago
Slope or 2,87 & 5,35
aleksklad [387]

What are you asking in the question?

7 0
3 years ago
Find all solutions of the system of equations algebraicllally. Write your solutions as coordinate points Y=3x^2- 2x-1 2x+y=11
zloy xaker [14]

Answer:

(- 2, 15 ) and (2, 7 )

Step-by-step explanation:

Given the 2 equations

y = 3x² - 2x - 1 → (1)

2x + y = 11 → (2) ← subtract 2x from both sides

y = 11 - 2x → (3)

Substitute y = 3x² - 2x - 1 into (3)

3x² - 2x - 1 = 11 - 2x ( subtract 11 - 2x from both sides )

3x² - 12 = 0 ( add 12 to both sides )

3x² = 12 ( divide both sides by 3 )

x² = 4 ( take the square root of both sides )

x = ± \sqrt{4} = ± 2

Substitute these values into (3) for corresponding values of y

x = - 2 : y = 11 - 2(- 2) = 11 + 4 = 15 ⇒ (- 2, 15 )

x = 2 : y = 11 - 2(2) = 11 - 4 = 7 ⇒ (2, 7 )

8 0
2 years ago
Which one is a linear equation?<br> 2y + 5y^2 - 3 = 0<br> 2y + 5 = 0<br> 2y^5 = 0<br> 2y^2 - 3 = 0
Arlecino [84]
Linear equation should be the last one
6 0
3 years ago
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