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Rudik [331]
3 years ago
15

Caroline is doing a traffic survey. On the first day, the ratio of

Mathematics
1 answer:
Goryan [66]3 years ago
4 0

Answer:

1st day = 13/20×100 = 65%

2nd day = 8/13×100=61.53%

1st day answer

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PLEASE HELP
miss Akunina [59]

In the smallest of the three triangles (with sides a,b,3) we have

a^2+3^2=b^2

In the second-largest triangle (with sides a,108), the length of the missing side is \sqrt{a^2+108^2}. Then in the largest triangle (with sides b,111,\sqrt{a^2+108^2}), we have

b^2+\left(\sqrt{a^2+108^2}\right)^2=(108+3)^2=111^2

\implies b^2+a^2+108^2=111^2

\implies b^2+a^2=657

Equivalently, we have

(a^2+9)+a^2=657\implies 2a^2=648\implies a^2=324\implies a=18

In turn, we find

b^2=18^2+3^2=298\implies b=\sqrt{333}=3\sqrt{37}

6 0
2 years ago
Let S be the universal set, where:
kolezko [41]

A' = {7,8,10}

B' = {1,3,59}

Given,

Let S be the universal set, where:

S = {1,2,3,4,5,6,7,8,9,10}

Let sets A and B be subsets of S, where:

Set A = {1,2,3,4,5,6,9}

Set B = {2,4,6,7,8,10}

We need to find the elements in the set (A') and (B)'

<h3>What is a complement of a set?</h3>

A compliment of a set D is denoted by D' or D bar.

It means the set contains all elements in the universal set U other than the elements in set D.

Example:

U = {1,2,3,4,5,6,7,8,9}

D = {1,2,3,4,5}

D' = {6,7,8,9}

Find A' and B'

S = {1,2,3,4,5,6,7,8,9,10}

A =  {1,2,3,4,5,6,9}

B = {2,4,6,7,8,10}

A' = {7,8,10}

B' = {1,3,59}

Thus,

A' = {7,8,10}

B' = {1,3,59}

Learn more about the complement of sets here:

brainly.com/question/20319548

#SPJ1

3 0
1 year ago
Reason for 4 pleaseeee
Marina CMI [18]

The reason for statement 4 is CPCTC.

6 0
3 years ago
Solve similar triangles <br> Solve for x <br> x=?
lions [1.4K]

Answer:

x/9 = 1/5

x = 9/5

6 0
2 years ago
What decimal represents the shaded part of the figure
irina1246 [14]

Answer: 0.72

Step-by-step explanation: 72/100 of the block are shaded. The decimal form of that fraction is 0.72

5 0
2 years ago
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