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Natalija [7]
3 years ago
6

Evaluate the expression. -38 + 11 a. -27 b. -49 c. 49 d. 27

Mathematics
1 answer:
kiruha [24]3 years ago
8 0
The answer is a.) -27

subtract 11 from 38
27 keeps the negative sign because -38 is larger than 11
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An arithmetic sequence begins as follows: a1=13 a2=19 Which of the following gives the definition of its nth term?
Otrada [13]

Answer:

the nth term of the sequence is a_n=6n+7

Step-by-step explanation:

Given : An arithmetic sequence begins as follows: a_1=13, a_2=19

To find : Which of the following gives the definition of its nth term?

Solution :

The nth term of the A.P is a_n=a+(n-1)d

The first term is a=a_1=13

The common difference is d=a_2-a_1

d=19-13=6

Substitute in the formula,

a_n=13+(n-1)6

a_n=13+6n-6

a_n=6n+7

Therefore, the nth term of the sequence is a_n=6n+7

5 0
3 years ago
Find the value of each of the following: exponents
Nataly [62]

Answer:

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8) 169

9) 1.44

10) 180??

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12) 3430

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Step-by-step explanation:

7 0
2 years ago
How do you solve x- 17 =23
Reptile [31]

x-17= 23

move -17 to the other side

sign changes from -17 to +17

x-17+17= 23+17

x= 23+17

Answer:

x= 40

8 0
3 years ago
Read 2 more answers
A boat is marked up 20% on the original price. The original price was
pishuonlain [190]

Answer:

Original price was $50 x 0.20 = 10

original price $50 - 10 = $40 the sale price before sales tax

Step-by-step explanation:

hopefully it helps

3 0
2 years ago
What ratio forms a proportion with 2/3?<br> A. 2/4 B. 3/4 C. 4/6 D. 3/2
LekaFEV [45]

Answer:

c

Step-by-step explanation:

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2 goes into 4 twice and then 2 goes into 6 3 times

2/3

3 0
2 years ago
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