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2 years ago

Make a list of a graduation toolkit.

Mathematics

2 answers:

amid [387]2 years ago

6 0

U need,scissors,pencils,erasers,papers,books,and other types of things

zzz [600]2 years ago

5 0

Binders, pencils, erasers, folders, notebooks, etc.

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Solve StartFraction one-third over 5 endFraction = StartFraction a over 20 EndFraction

Anestetic [448]

Answer:

4/3

Step-by-step explanation:

i did it

6 0

2 years ago

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Explain how you know that x^2-8x+20 is always positive. Please help.

IRISSAK [1]

Answer:

if you rearrange to complete the square, you get (x^2-4)^2 +4

and seeing as anything squared will always be positive or zero, the lowest possible value for (x^2-4)^2 is 0, when x = 4

and 0 + 4 = 4, which is greater than 0, so positive

Step-by-step explanation:

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2 years ago

What is the slope of the line?

garik1379 [7]

Answer:

Step-by-step explanation:

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2 years ago

In 2 hours, the tip of the hour hand in the Santa

Lana71 [14]

Answer:

Step-by-step explanation:

angle subtended by hour hand in 2 hours=360/12 *2=60°

$\theta=\frac{\pi }{180}*60=\frac{\pi }{3}\\l=30~cm\\\theta=\frac{l}{r}\\\frac{\pi }{3}=\frac{30}{r}\\r=\frac{3}{\pi }*30=\frac{90}{\pi }\approx 28.65 ~cm$

6 0

3 years ago

The sum of the radius of the base and the height of a solid cylinder is 37m. If the total surface area of the cylinder is 1628 m

MA_775_DIABLO [31]

Answer:

4618.14 $m^{3}$ or 4618 $m^{3}$

Step-by-step explanation:

From T.S.A = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

where T.S.A = 1628 $m^{2}$

1628 = 2 $\pi$ rh + 2 $\pi$ $r^{2}$

1628 = ( rh + $r^{2}$ ) 2 $\pi$

by dividing both side by 2 $\pi$

$\frac{1628}{2\pi }$ = rh + $r^{2}$

259.10 = rh + $r^{2}$

rh = 259.10 - $r^{2}$

h = $\frac{259.10 - r^{2} }{r}$ (1)

From Radius + Height = 37

r + h = 37 (2)

by substituting eqn 1 into 2

r + $\frac{259.10 - r^{2} }{r}$ = 37

by multiplying r to both side

$r^{2}$ + 259.10 - $r^{2}$ = 37r

259.10 = 37r

r = $\frac{259.10}{37}$

r = 7.00 ≅ 7

From Eqn 2

r + h = 37

7 + h = 37

h = 37 - 7

h = 30

so Volume of a cylinder = $\pi r^{2} h$

V = $\pi$ * $7^{2}$ * 30

V = 4618.14 $m^{3}$ ≅ 4618 $m^{3}$

4 0

3 years ago

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