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Gnoma [55]
3 years ago
13

10. Andy has trumpet practice 4 times every month. Every practice lasts half an hour. What is the total number of minutes that A

ndy will practice?​
Mathematics
1 answer:
mars1129 [50]3 years ago
5 0

Answer:

480min a month

Step-by-step explanation:

4×30 =120

120×4=480

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4 2/7 ÷3 4/5=<br> how do you answer this?​
Pavel [41]

is it 42 or 4 and 2 separate

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3 years ago
Type the integer that makes the following subtraction sentence true:<br> -57 - ? = -151
posledela

Answer:

94

Step-by-step explanation:

Its pretty simple,

The easiest way to find the missing number is to do 151-57, which = 94

8 0
3 years ago
MULTIPLE CHOICE:
Vanyuwa [196]

Answer:

4.7 and 5.1

Step-by-step explanation:

7.4 only works if it shows less than or equal to inequality

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3 years ago
Work out the size of angle x 126* 43*
il63 [147K]

Answer:

83°

Step-by-step explanation:

We khow that the sum of a triangle's angle is 180°

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We should calculate the first one wich is given by : 180-126= 54

now finally :

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5 0
3 years ago
Sin(x2 + y2) da r , where r is the region in the first quadrant between the circles with center the origin and radii 2 and 5
sweet [91]
Converting to polar coordinates gives

\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_{\theta=0}^{\theta=\pi/2}\int_{r=2}^{r=5}\sin(r^2)r\,\mathrm dr\,\mathrm d\theta
=\displaystyle\pi\int_{r=2}^{r=5}2r\sin(r^2)\,\mathrm dr
=\displaystyle\pi\int_{r^2=4}^{r^2=25}\sin(r^2)\,\mathrm d(r^2)
=-\cos(r^2)\bigg|_{r^2=4}^{r^2=25}
=\pi(\cos4-\cos25)
3 0
3 years ago
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