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GREYUIT [131]
4 years ago
11

Vertical angles must?

Mathematics
2 answers:
Misha Larkins [42]4 years ago
8 0

Answer:

be congruent

Step-by-step explanation:

777dan777 [17]4 years ago
6 0

Answer: Be congruent and have the same vertex

Step-by-step explanation: Trust me G

APEX

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Which table shows a proportional relationship between x and y? A. x y 2 4 3 6 4 9 B. x y 3 4 9 16 15 20 C. x y 4 12 5 15 6 18 D.
Sliva [168]

Answer:

C.

Step-by-step explanation:

The relationship is proportion if y/x is constant.

So it is C because 12/4 = 15/5 = 18/6 = 3.

7 0
3 years ago
Simplify.<br> √<br> 343 mlsldkdkdkdkdkddkd
Diano4ka-milaya [45]
The square root of 343 is 18.520 or 18.52 or also 18
6 0
3 years ago
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Write the series using summation notation.<br><br> 4 + 8 + 12 + 16 + 20+ . . . + 80
zhannawk [14.2K]

Answer:

\sum ^{20} _{n \to \11} 4n

Step-by-step explanation:

In order to write the series using the summation notation, first we need to find the nth term of the sequence formed. The sequence generated by the series is an arithmetic sequence as shown;

4, 8, 12, 16, 20...80

The nth term of an arithmetic sequence is expressed as Tn = a +(n-1)d

a is the first term = 4

d is the common difference = 21-8 = 8-4 = 4

n is the number of terms

On substituting, Tn = 4+(n-1)4

Tn = 4+4n-4

Tn = 4n

The nth term of the series is 4n.

Since the last term is 80, L = 4n

80 = 4n

n = 80/4

n = 20

This shows that the total number of terms in the sequence is 20

According to the series given 4 + 8 + 12 + 16 + 20+ . . . + 80 , we are to take the sum of the first 20terms of the sequence. Using summation notation;

4 + 8 + 12 + 16 + 20+ . . . + 80  = \sum ^{20} _{n \to \11} 4n

4 0
3 years ago
What is the ratio of new books to used books?
skelet666 [1.2K]

Answer:

7 to 8

Step-by-step explanation:

7-15=8

6 0
3 years ago
Liu deposited 3,500 into a savings account. The simple interest rate is 4%
Reil [10]
So you would do is take 3,500 and multiply it by 4% to get 140
7 0
4 years ago
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