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bearhunter [10]
3 years ago
6

Please helppp!! Round to the nearest hundredths

Mathematics
2 answers:
meriva3 years ago
7 0

Answer:

Step-by-step explanation:

diameter = 42 mm

radius (r) = 42/2 = 21mm

SA of semicircle = 3πr²

=3*\frac{22}{7}*21*21\\\\=3*22*3*21\\\\=4158mm^{2}

densk [106]3 years ago
3 0

Answer:1385.44mm sq

Step-by-step explanation: surface area of a circle = pi x radius squared

3.142 x 21 squared

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Given that h(x) = 3x −19, find the value of x that makes h(x) = 71.
rosijanka [135]

Keywords:

<em>Equation, variable, value, clear </em>

For this case we have an equation with a variable of the form y = h (x). Where h (x) = 3x-19. Given the value ofh (x) = 71, we want to find the value of the variable "x". So, we have:

h (x) = 3x-19\\71 = 3x-19

We must clear "x", for this, we add "19" to both sides of the equation:

71 + 19 = 3x-19 + 19\\90 = 3x

We divide between "3" on both sides of the equation:

\frac {90} {3} = \frac {3x} {3}\\30 = x

Thus, the value of the variable "x" is 30.

Answer:

x = 30

Option A

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Step-by-step explanation:

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Sliva [168]

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Step-by-step explanation:

do your self it is easy

6 0
3 years ago
What is the mean of this set: (2, 6, 7, 9, 9, 9)?
nikdorinn [45]
7, to find the mean add up all the numbers and then subtract by the amount of Humber a you added.



For example, 1,3,8,10 added together is 22. We added four numbers together, so divide by 4. The mean of 1,3,8,10 is 5.5
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PASAGOT PO MATH KO PLSSS I NEED YOUR HELP :&lt;​
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Answer:

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Step-by-step explanation:

From the solution diagram attached ;

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