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Leto [7]
2 years ago
14

HELP ME FAST 10 points

Mathematics
2 answers:
UNO [17]2 years ago
6 0

the answer is d... is it a test problem?

Kay [80]2 years ago
5 0

Answer:

The answer is d good luck I think yu need it have a blessed day

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In a toy factory 200 wooden solid cylinder 7cm long and 35mm in diameter have to be painted. What is the total surface area in c
Semmy [17]
The surface area of a cylinder is:

A=2pr^2+2prh  and since r=d/2

A=2p(d^2/4+dh/2)

A=(p/2)(d^2+2dh)  and we need 200 of these cylinders...

A=(100p)(d^2+2dh), and using d and h, 3.5cm and 70cm we get:

A=(100p)(3.5^2+2*3.5*7)

A=(100p)(12.25+49)

A=6125p cm^2

A≈19242 cm^2 (to nearest cm^2)
5 0
3 years ago
Write the equation of a line through (3,1), parallel to y = x + 1
Vera_Pavlovna [14]

Answer:

The answer is C ( y= 2/3x - 1 )

Step-by-step explanation:

Equation Formula : y - y1 = m ( x - x1)

y - 1 = 2/3 ( x - 3 )

y - 1 = 2/3x - 2

y = 2/3x - 2 + 1

y = 2/3x - 1

8 0
3 years ago
Rationalize the numerator. <br><img src="https://tex.z-dn.net/?f=%20%20%5Cfrac%7B%20%5Csqrt%5B3%5D%7B144x%20%7D%20%7D%7B%20%5Csq
Simora [160]

rationalizing the numerator, or namely, "getting rid of that pesky radical at the top".


we simply multiply top and bottom by a value that will take out the radicand in the numerator.


\bf \cfrac{\sqrt[3]{144x}}{\sqrt[3]{y}}~~&#10;\begin{cases}&#10;144=2\cdot 2\cdot 2\cdot 2\cdot 3\cdot 3\\&#10;\qquad 2^3\cdot 18&#10;\end{cases}\implies \cfrac{\sqrt[3]{2^3\cdot  18x}}{\sqrt[3]{y}}\implies \cfrac{2\sqrt[3]{  18x}}{\sqrt[3]{y}}&#10;\\\\\\&#10;\cfrac{2\sqrt[3]{  18x}}{\sqrt[3]{y}}\cdot \cfrac{\sqrt[3]{(18x)^2}}{\sqrt[3]{(18x)^2}}\implies \cfrac{2\sqrt[3]{(18x)(18x)^2}}{\sqrt[3]{(y)(18x)^2}}\implies \cfrac{2\sqrt[3]{(18x)^3}}{\sqrt[3]{18^2x^2y}}


\bf \cfrac{2(18x)}{\sqrt[3]{324x^2y}}~~&#10;\begin{cases}&#10;324=2\cdot 2\cdot 3\cdot 3\cdot 3\cdot 3\\&#10;\qquad 12\cdot 3^3&#10;\end{cases}\implies \cfrac{36x}{\sqrt[3]{12\cdot 3^3x^2y}}&#10;\\\\\\&#10;\cfrac{36x}{3\sqrt[3]{12x^2y}}\implies \cfrac{12x}{\sqrt[3]{12x^2y}}

3 0
3 years ago
Read 2 more answers
Which equation best matches the graph shown below?
n200080 [17]

Answer:

y= 0.2(x+1)^2+5 (Bottom left answer)

Step-by-step explanation:

Hope this helps :)

6 0
2 years ago
Write the equation of the line that passes through the points (4, -6) and (-2,3).
Butoxors [25]
In point slope form, the answer would be y = - 3/2 x it’s one fraction
5 0
3 years ago
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