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faust18 [17]
2 years ago
9

Catalina multiplied 842 and 3 and got 3,326. how can can she check to see if her answer is reasonable

Mathematics
1 answer:
denpristay [2]2 years ago
4 0
By rounding 842 to 800, she can multiply 800 by 3 to get 2,400.

then, multiply 40 by 3, you get 120 and add the two together to get 2,520

this shows her answer is not necessary reasonable
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Find the area of the shaded region. Round the nearest hundredth if necessary. YZ=14.2m
andreyandreev [35.5K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

1

   A_1  =  67.58 \ in^2

2

   A_2 =415.4 \ ft^2

3

   A_3  =  8.48 \ cm^2

4

  A_4 =  480.38 \ m^2

Step-by-step explanation:

Generally the area of a sector is mathematically represented as

         A =  \frac{\theta}{360} * \pi r^2

Now at r_1  = 11 in and  \theta_1 =  64^o

       A_1 =  \frac{64}{360} * 3.142  * 11^2

       A_1  =  67.58 \ in^2

Now at  r_2  = 20 ft in and  \theta_2  =  119 ^o

       A_2 =  \frac{119}{360} * 3.142 *  20^2

       A_2 =415.4 \ ft^2

Now at  r_3  = 6.5 cm   and  \theta_3 =  23 ^o

     A_3  =  \frac{23}{360} * 3.142 *  6.5 ^2

      A_3  =  8.48 \ cm^2

Now at  r_4  = 14.2 m   and  \theta_4 = 360 -87 =  273 ^o

         A_4 =  \frac{273}{360}  * 3.142 * 14.2^2

          A_4 =  480.38 \ m^2

6 0
3 years ago
I need help with this
vfiekz [6]

Answer:

Volume = 14.5 cm³

Step-by-step explanation:

Volume of cone = \pi r^2\frac{h}{3}

<u><em>Where r = 2 and h = 3.46</em></u>

Volume = (3.14)(2)^2\frac{3.46}{3}

Volume = (3.14)(4)(1.15)

Volume = 14.5 cm³

8 0
2 years ago
Write numbers in order from the smallest to the greatest:<br><br> 217, 200 227, 712 27, 200 227, 200
Sergio039 [100]

Answer:

27, 200, 200, 217, 227, 227, 712

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
NEED HELP WITH
Fed [463]
Let the average profit or loss in year 2006 be x millions, 


The average profit for the 8-year period, is the total sum of the profits (or losses) of each year, divided by 8:

so we have:

\displaystyle{ \frac{3.40+2.10+x+0.60+2.10+0.20+1.30+0.75}{8}=1

\displaystyle{\frac{10.45+x}{8}=1

10.45+x=8

x=8-10.45=-2.45


Answer: the loss in 2006, was 2.45 million dollars

3 0
3 years ago
Algebra help needed. I appreciate it!
Anna11 [10]
\cfrac{3y-z}{y+5z}  \\\\= \cfrac{3*6-2}{6+5*2} \\\\= \cfrac{18-2}{6+10} \\\\= \cfrac{16}{16} \\\\= 1
7 0
3 years ago
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