3 years ago

3 and 1/4 into a decimal point?

2 answers:

5 0

3 and 1/4 into a decimal point would be:
3.25

3 0

Answer 1/4 as a decimal is .25. However, this is 3 1/4, so the answer is 3.25

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MAVERICK [17]

Try this:
Given:
$\left \{ {{x-y=1} \ [1] \atop {x+y=3} \ [2]} \right.$
1) [1]+[2]: 2x=2 ⇒ x=2
2) [2]-[1]: 2y=1 ⇒ y=1.
3) answer: (2;1)

7 0

3 years ago

BartSMP [9]

Divide <span>150:100 to find out what the density in g/cm3 is. So 150:100 = 1.5 g/cm3</span>

8 0

2 years ago

geniusboy [140]

150 cc per 4 hours divide by 4 equals 37.5 cc per hour

3 0

2 years ago

meriva

Hello :
the circumference of a circle is P : P = <span>2π×r r : ridus
</span> P = 2π×r = π× L because : 2r = L
you can find the diameter L : L = P/π

8 0

3 years ago

Leona [35]

In polar coordinates, the region $R$ is the set of points

$\left\{(r,\theta)\mid3\le r\le5,\,0\le\theta\le\dfrac\pi2\right\}$

and we have $x^2+y^2=r^2$ and $\mathrm dA=r\,\mathrm dr\,\mathrm d\theta$ . So the integral, converted to polar, is

$\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_0^{\pi/2}\int_3^5r\sin r^2\,\mathrm dr\,\mathrm d\theta=\frac\pi2\int_3^5r\sin r^2\,\mathrm dr$

Substitute $s=r^2$ to get

$=\displaystyle\frac\pi4\int_9^{25}\sin s\,\mathrm ds=\frac{(\cos9-\cos25)\pi}4$

5 0

3 years ago