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otez555 [7]
3 years ago
10

A school survey asked students which candidate they supported for class president. the survey data are shown in the relative fre

quency table.
Mathematics
1 answer:
GalinKa [24]3 years ago
3 0

Answer:

C. 24%

Step-by-step explanation:

hope it works

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Which coefficient matrix represents a system of linear equations that has a unique solution ?
finlep [7]

Answer:

Option C

Step-by-step explanation:

We are given a coefficient matrix along and not the solution matrix

Since solution matrix is not given we cannot check for infinity solutions.

But we can check whether coefficient matrix is 0 or not

If coefficient matrix is zero, the system is inconsistent and hence no solution.

Option A)

|A|=\left[\begin{array}{ccc}4&2&6\\2&1&3\\-2&3&-4\end{array}\right] =0

since II row is a multiple of I row

Hence no solution or infinite

OPtion B

|B|=\left[\begin{array}{ccc}2&0&-2\\-7&1&5\\4&-2&0\end{array}\right] \\=2(10)-2(10)=0

Hence no solution or infinite

Option C

\left[\begin{array}{ccc}6&0&-2\\-2&0&6\\1&-2&0\end{array}\right] \\=2(36-2)=68

Hence there will be a unique solution

Option D

\left[\begin{array}{ccc}5&10&5\\4&1&4\\-1&-2&-1\end{array}\right] \\=2(10)-2(10)=0=0

(since I row is -5 times III row)

Hence there will be no or infinite solution

Option C is the correct answer



4 0
3 years ago
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Tanzania [10]
A = -3 B = 39 +6 mo para makuha mo -6 nmn para sa a 3-6 is -3
4 0
2 years ago
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Match the vocabulary word with the correct definition.
Zolol [24]

Answer:

1. edge

2. cone

3. decompose

4. cubic units

5. cylinder

6. cube

7. composite figure

8. base

9. area

10. dimensions

8 0
2 years ago
Divied fractiona 7÷3/5=
Scorpion4ik [409]

equal to 35/3 that is 7*5/3 and finally equal to 11.666

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3 years ago
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Is PQRST a scaled copy of ABCDE ? Explain reasoning
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Answer: no

Step-by-step explanation:

7 0
3 years ago
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