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andreyandreev [35.5K]
3 years ago
5

Math nation section 2

Mathematics
1 answer:
MrRa [10]3 years ago
6 0

Send the question?

Must click thanks and mark brainliest

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You have to make 1000 buttons.the diameter of the button is 9cm but you have to find it’s area.its $15/m squared and you have to
Semmy [17]

Answer:

$95.38

Step-by-step explanation:

step 1

Find the area of one button

The area is equal to

A=\pi r^{2}

we have

r=9/2=4.5\ cm ---> the radius is half the diameter

Convert to meters

r=4.5\ cm=4.5/100=0.045\ m

assume

\pi =3.14

substitute

A=(3.14)(0.045)^{2}\\A=0.0063585\ m^2

step 2

Find the area of 1,00 buttons

Multiply by 1,000

A=0.0063585(1,000)=6.3585\ m^2

step 3

Find the cost

Multiply $15 per square meter by the total area of 1,000 buttons

(15)6.3585=\$95.38

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3 years ago
Variable y varies directly with variable x, and y = 48 when x = 8.
scZoUnD [109]
Y/x=k   48/8=6=k   k is the constant       y/4=6    y=24
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Lago enriquillo , Dominican Republic is at 151 ft below sea level. The highest mountain in the Dominican Republic is pico Duarte
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The graph shows the side view of a water slide
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Step-by-step explanation: Given that the graph shows the side view of a water slide with dimensions in feet.

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From the graph, we note that

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So, the given two points are (0, 80) and (5, 40).

The rate of change for a function f(x) between the points (a, b) and (c, d) is given by

Therefore, the rate of change for the given function between the points (0, 80) and (5, 40) is

Thus, the required rate of change is -8.

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Slove the following equation.<br>6n - 3(n + 2) + 3(7n + 1) = 0​
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Answer:

here is my working out to find answer, if u feel that the answer is wrong then do the reverse calculation by putting n value to the equation. hope u understood and stay safe!

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