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labwork [276]
3 years ago
11

I need some help here

Mathematics
1 answer:
oee [108]3 years ago
8 0

Answer:

3 1/10 meters

Step-by-step explanation:

The twine is 5 3/5 meters long .

Frank used 2 1/2 meters to tie up a package.

Twine left will be = total length of twine - length of used twine

That’s

5 3/5 - 2 1/2

Change the fractions to improper fractions.

We have

28/5 - 5/2

Look for the LCM of the denominators.

The LCM = 10.

Now divide the lcm by the denominators and multiply the results with the numerators while the LCM becomes the denominator of the results.

We have

56 - 25 /10

31/10

3 1/10

The twine left is 3 1/10 meters

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I don’t understand what Is the answer since I’m not good with percentages
TiliK225 [7]

Answer:

9 students

75 percent of 12 = 9

Search for calculator. Type, "75" then click the percent symbol, then type "12." It should give you the right answer.

4 0
3 years ago
Find the volume of the prism.<br><br><br><br> The volume is <br> cubic meters.
Lana71 [14]

Answer:

12.5m³

Step-by-step explanation:

V = w × h × l = 1.43 × 3.13 × 2.8 = 12.5m³

Have a good day

6 0
2 years ago
In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther
sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1  = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0
3 years ago
Which equation represents a circle with a center located at (-2, 2) and a circumfrence of 16 pi
PtichkaEL [24]
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2 years ago
Find the area of the kite
Elis [28]
d_1=9.2m+9.2m=18.4m\\d_2=6.9m+13.8m=20.7m\\\\Area\ of\ the\ kite:A=\frac{d_1\times d_2}{2}\\\\A=\frac{18.4\times20.7}{2}=9.2\times20.7=190.44\ (m^2)
6 0
3 years ago
Read 2 more answers
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