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Dafna11 [192]
3 years ago
12

Determine whether the statement is true or false.

Mathematics
2 answers:
Vsevolod [243]3 years ago
8 0

Answer:

True

Step-by-step explanation:

The negative power property of exponents says that:

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

And vice versa:

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

Therefore, since our exponent is negative, we can change it to positive if we put it in the numerator. In other words:

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

The statement is true.

amid [387]3 years ago
5 0

Answer:

False

Step-by-step explanation:

1/3^4=3^4

0.012346≠81

False

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Rita purchased two loaves of wheat bread. Each loaf was $1.89. How much
Amanda [17]

Answer: 3.78

Step-by-step explanation:

Because she bought 2 $1.89 loaves, she spent 2 * 1.89, or 3.78 dollars.

Hope it helps <3

8 0
2 years ago
Read 2 more answers
If a seed is planted, it has a 80% chance of growing into a healthy plant.
AlladinOne [14]

Answer:

0.336

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1-p).

Here, n = 8, r = 7, p = 0.8, and q = 0.2.

P = ₈C₇ (0.8)⁷ (0.2)⁸⁻⁷

P = 0.336

3 0
3 years ago
Solve algebraically for x and explain each step( using mathematical vocbuary) for the following: 2(x+5)+ 3x = 30
Lelu [443]
First do distributive property
2x + 10 + 3x = 30
Now combine like terms
5x + 10 = 30
Subtract 10 from both sides
5x = 20
Divide both sides by 5
x = 4
8 0
2 years ago
What is constant of proportionality ? y=14x k=?​
Delvig [45]

Answer: I believe that its 14

Step-by-step explanation:

6 0
3 years ago
How to classify 8x4 + 7x3 + 5x2 + 8 by number of terms.
Arisa [49]

Answer:

This is a polynomial.

Step-by-step explanation:

A monomial is a constant, a variable or the product of constants and variables.  

A binomial is the sum or difference of two monomials.

A trinomial is the sum or difference of three monomials.

Anything more than three terms makes it a polynomial.

This has 4 terms; thus it is a polynomial.

4 0
3 years ago
Read 2 more answers
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