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Monica [59]
3 years ago
14

(-7) x (-3)

Mathematics
1 answer:
Andreas93 [3]3 years ago
7 0

Answer:

Positive

Step-by-step explanation: (-27) = 27

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Formula of an equation
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3 years ago
1. What is the value of the expression 3^-4?. a) -81. b) -12. c) -1/81. d) 1/81. 2. What is the value of the expression 1/4^3?.
hjlf

Answer:

1.

Option d is correct

2.

Option c is correct

3.

Option a is correct

4.

Option d is correct

5.

Option c is correct

Explanation:

Using exponent rule:

a^{-n} = \frac{1}{a^n}

1.

Given the expression:  

3^{-4}

Apply the exponent rules:

\frac{1}{3^4} = \frac{1}{81}

Therefore,  the value of the given expression is, \frac{1}{81}.

2.

To find the value of the expression \frac{1}{4^3}

then;

\frac{1}{4^3} = \frac{1}{64}

Therefore, the value of the given expression is, \frac{1}{64}.

3.

Find the the value of the expression \frac{2}{4^3}

then;

\frac{2}{4^3} = \frac{2}{64}

Simplify:

\frac{1}{32}

Therefore, the value of the given expression is, \frac{1}{32}.

4.

Given the expression:

K^{-3} = \frac{1}{27}

we can write this as:

K^{-3} = \frac{1}{3^3}

Apply the exponent rules:

K^{-3} = 3^{-3}

On comparing both sides we have;

K = 3

Therefore, the value of K is, 3

5.

Given the expression:

3^N= \frac{1}{81}

we can write this as:

3^N= \frac{1}{3^4}

Apply the exponent rules:

3^N = 3^{-4}

On comparing both sides we have;

N = 4

Therefore, the value of N is, -4

3 0
4 years ago
Read 2 more answers
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Degger [83]
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3 years ago
The total of a number and -15 equals -6
maria [59]

Answer:

x = 9

Step-by-step explanation:

Create an equation:

x = some number

and = add

other number = -15

x + (-15) = -6

remove () using rule

x - 15 = -6

add +15 to both sides

x = 9

6 0
3 years ago
Based on the graph, which statement BEST describes what is happening to the temperature over time?( picture 1 )
nevsk [136]
1. A.
None of the other answers, looking at the graph, make sense.

2. B.
Used distance formula.
sqrt[(0+8)^2 + (6-0)^2]
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sqrt[100]
10

3. A.
Domain = x
(1,0) , (3,0) , (5,0) , (7,0)
Range = y
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