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3 years ago

Until 2014, the mass of a kilogram was defined as exactly equal to the mass of a special

Mathematics

1 answer:

emmainna [20.7K]3 years ago

7 0

Step-by-step explanation:

We have,

Diameter of cylinder, d = 39.2 mm

Radius, r = 19.6 cm

Height of the cylinder, h = 39.2 mm

It is required to find the surface area of this cylinder. The formula of the surface area of cylinder is given by :

$S=2\pi rh+2\pi r^2\\\\S=2\pi r(h+r)$

Putting all values we get :

$S=2\times\dfrac{22}{7}\times19.6\cdot(39.2+19.6)\\\\S=7244.16\ mm^2$

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the formula for the perimeter of a square is p=4s. find the side of the square if the perimeter is 96 inches

s2008m [1.1K]

Answer:

24 inches

Step-by-step explanation:

Plug in 96 for p in the equation

96 = 4s

Divide both sides by 4 to isolate the variable

24 = s

4 0

3 years ago

Question one pls algebra 2 logarithms

nirvana33 [79]

Condense the logarithm on the right side:

$3\log_b(p)-\left(2\log_b(t)+\dfrac12\log_b(r)\right)$

$n\log_b(m)=\log_b(m^n) \implies \log_b(p^3)-\left(\log_b(t^2)+\log_b\left(r^{\frac12}\right)\right)$

$\log_b(m)+\log(n)=\log_b(mn) \implies \log_b(p^3)-\log_b\left(t^2r^{\frac12}\right)$

$\log_b(m)-\log(n)=\log_b\left(\dfrac mn\right) \implies \log_b\left(\dfrac{p^3}{t^2r^{\frac12}}\right)$

So,

$x=\dfrac{p^3}{t^2r^{\frac12}}$

and $r^{\frac12}=\sqrt{r}$ , which makes (4) the correct choice.

4 0

3 years ago

What is the answer to y=x^2+6x+5

BARSIC [14]

Answer:

-5 and -1

Step-by-step explanation:

Factoring, we get y = (x+5)(x+1)

So x = -5 or -1

Or, you could've used the quadratic formula, thought it is slower.

3 0

3 years ago

Read 2 more answers

What is the measure of 2x?

luda_lava [24]

Answer:

130 °

....................

5 0

3 years ago

Read 2 more answers

Given the median qr and trapezoid mnop what is the value of x 3x-8

Paha777 [63]

Answer-

The value of x was found to be 7.

Solution-

In the given trapezium, the parallel sides are NO, MP and QR is the median.

From the geometric properties of trapezium, we know that,

The median line is always parallel to the bases and its length is the average length of the bases.

$\Rightarrow \frac{NO+MP}{2}=QR$

$\Rightarrow \frac{(3x-8)+(7x+4)}{2}=33$

$\Rightarrow 3x-8+7x+4=66$

$\Rightarrow 10x-4=66$

$\Rightarrow 10x=70$

$\Rightarrow x=7$

Therefore, the value of x is 7.

8 0

4 years ago

Read 2 more answers