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Bogdan [553]
3 years ago
14

7+ -(8) - 1= what is the answer

Mathematics
2 answers:
nikdorinn [45]3 years ago
6 0

Answer:

-2

Step-by-step explanation:

7+(-8)-1

change to: 7-8-1

combine like terms (-8 and -1)

7-9

= -2

kirill [66]3 years ago
4 0

Answer: -2

Step-by-step explanation:

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Let A = { 0 , 2 , 4 , 6 } , B = { 1 , 2 , 3 , 4 , 5 } , and C = { 1 , 3 , 5 , 7 } . Find { x ∣ x ∈ B or x ∈ C } .
EastWind [94]

Answer:

  {1, 2, 3, 4, 5, 7}

Step-by-step explanation:

x in B or C is ...

  B ∪ C = {1, 2, 3, 4, 5, 7}

5 0
3 years ago
A math quiz has 10 questions and is scored out of 100. Each question is worth the same. The function S(q) represents the quiz sc
zysi [14]

Answer:  S(q) represents a quantity that changes at a constant rate per unit interval is true and S(q) represents a linear function is true. The rest is false. Hope this helps

Step-by-step explanation:

8 0
3 years ago
What is the value of X if 9^x^-^1-2=25?
nadezda [96]

Answer:

\frac{5}{2}

Step-by-step explanation:

First, add two to both sides to get 9^{x-1}=27

There are two ways to solve this from here

  1. Think about what power you would have to raise 9 to to get to 27. 9^{\frac{1}{2}} = 3 and 3^3=27. So, multiplying the powers (because it is a power to a power) you get 9^{\frac{3}{2}}=27. This means that x - 1 = \frac{3}{2} or x = \frac{5}{2}.
  2. Take the log of both sides.

This gives us \log_9(27)=x-1\\\log_9(27)+1=x\\\log_9(3^3)+1=x\\3\log_9(3)+1=x\\3(\frac{1}{2})+1=x\\\frac{3}{2}+1 = x\\\\\frac{5}{2} = x

4 0
3 years ago
A student wants to compare textbook prices for two online bookstores. She takes a random sample of five textbook titles from a l
gregori [183]

Answer:

Dependent sample: The same textbook are being compared.

Step-by-step explanation:

We are given the following in the question:

A student wants to compare textbook prices for two online bookstores.

Sample 1 from bookstore A:

$115, $43, $99, $80, $119

Sample 2 from bookstore B:

$110, $40, $99, $69, $109

Dependent and independent sample:

  • Dependent samples are paired observations for same set of items.
  • Independent samples are observations made on two different sets of items.
  • If the values in one sample affect the observations in the other sample, then the samples are dependent.
  • If the values in one sample have no effect about those of the other sample, then the samples are independent.

Thus, the given sample is dependent sample as the same textbook is being compared from two different bookstore.

5 0
3 years ago
Write 0.245bar in the form p/q
frozen [14]

Answer:

245/999

Step-by-step explanation:

0.245bar = n

1000 n - n = 245

999n = 245

n = 245/999

6 0
3 years ago
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