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2 years ago

How many squares make up the surface of a cube?O A. SevenO B. FiveO C. SixD. Eight

Mathematics

2 answers:

Damm [24]2 years ago

8 0

How many squares make up the surface of a cube?

O A. Seven

O B. Five

● C. Six

D. Eight

Blababa [14]2 years ago

3 0

The answer to the question is C (6)

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What two numbers add to 9 and multiply to -70

Alborosie

X, y - the numbers

The numbers add to 9 and multiply to -70.
$x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
-x^2+9x+70=0 \\
-x^2+14x-5x+70=0 \\
-x(x-14)-5(x-14)=0 \\
(-x-5)(x-14)=0 \\
-x-5=0 \ \lor \ x-14=0 \\
x=-5 \ \lor \ x=14 \\ \\
y=9-x \\
y=9-(-5) \ \lor \ y=9-14 \\
y=14 \ \lor \ y=-5 \\ \\
(x,y)=(-5,14) \hbox{ or } (x,y)=(14,-5)$

The numbers are -5 and 14.

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2 years ago

What’s this I don’t know

avanturin [10]

Answer:

Step-by-step explanation:

its C.

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2 years ago

Simplify y 2 + 11y - 6y + y 2. y4 + 5 y4 + 5y 2y 2 + 5 2y 2 + 5y

Dmitrij [34]

Answer:

2y^2 +5y

Step-by-step explanation:

y^2 + 11y - 6y + y^2

Combine like terms

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kirill115 [55]

Answer:

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Step-by-step explanation:

2.9 cos (17) = 2.77

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How many squares make up the surface of a cube?O A. SevenO B. FiveO C. SixD. Eight​

How many squares make up the surface of a cube?O A. SevenO B. FiveO C. SixD. Eight