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2 years ago

PLZ HELP

Mathematics

1 answer:

Mkey [24]2 years ago

4 0

Answer

Step-by-step explanation:

It should taker her 4 hrs to get there because 53 times 4 equals 212.

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Convert -3pi/10 to degrees

ipn [44]

we know there are 180° in π radians, how many degrees then in -3π/10 radians?

$\bf \begin{array}{ccll} degrees&radians\\ \cline{1-2} 180&\pi \\\\ x&-\frac{3\pi }{10} \end{array}\implies \cfrac{180}{x}=\cfrac{\pi }{~~-\frac{3\pi }{10}~~}\implies \cfrac{180}{x}=\cfrac{\frac{\pi}{1} }{~~-\frac{3\pi }{10}~~} \\\\\\ \cfrac{180}{x}=\cfrac{\pi }{1}\cdot \cfrac{10}{-3\pi }\implies \cfrac{180}{x}=-\cfrac{10}{3}\implies 540=-10x\implies \cfrac{540}{-10}=x \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill -54=x~\hfill$

5 0

3 years ago

Solve for x in the equation x − 4 = 7.

Feliz [49]

Answer:

x=11

Step-by-step explanation:

Simplifying X= 7+4

therefore x=11

8 0

2 years ago

All of the following are equivalent, except 3x 2x^2 x(2 + 1) 2x + x

Svet_ta [14]

Answer:

2x^2 is not equivalent

Step-by-step explanation:

3x = 3x

2x^2 = 2x^2

X(2+1) = 3x

2x + x = 3x

the odd one out is 2x^2

8 0

2 years ago

Write the simplified form of -64^1/3

GREYUIT [131]

Answer:

-4

Step-by-step explanation:

Factor by the numbers from left to right.

$64^\frac{1}{3}$

$64=4^3$

$(\frac{4}{3})^\frac{1}{3}=4^3^*^\frac{1}{3}=4$

It changes to positive to negative.

-4

-4 is the correct answer.

8 0

2 years ago

2b +4= -8

kolbaska11 [484]

Answer:

b = (-6). 2×-6 + 4 = -8

9= 5. 2×5-6 = 4

s=4. 3×4 = 12 , 12-4 = 8

3 0

2 years ago