1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shkiper50 [21]
4 years ago
10

Which choice is equivalent to the expression below? -25 ​

Mathematics
2 answers:
Pavel [41]4 years ago
5 0

Answer:

Option A.

Step-by-step explanation:

The given expression is

-25

According to the reflexive property of equality, all values are equal to itself.

a = a

where, a be any real number.

Using the reflexive property we can say that

-25=-25

It means -25 is equal or equivalent to -25.

Therefore, the correct option is A.

Note: If the given expression is \sqrt{-25}, then

\sqrt{-25}=\sqrt{25}\sqrt{-1}        [\because \sqrt{ab}=\sqrt{a}\sqrt {b}]

\sqrt{-25}=5i             [\because \sqrt{-1}=i]

Then the correct option is B.

liq [111]4 years ago
4 0

Answer:5i

Step-by-step explanation:

You might be interested in
For the diagram below which equation is the correct use of the distance formula
sdas [7]
The Answer is A, verified apex 
8 0
3 years ago
Read 2 more answers
3. Solve for x.<br> (2 + 5x)"<br> (4x + 7)"<br> whats x?
erma4kov [3.2K]
(2+5x)=(4x+7)
-4x on each side
-2 in each side
x=5
6 0
3 years ago
The dimensions of a rectangular prism are n, n + 7, and n + 8. Use the formula V = ewh to write a polynomial in standard form fo
exis [7]

Answer:

n³ + 15n² + 56n

Step-by-step explanation:

The formula for the volume of a rectangular prism is V = l × w × h.

We are given the dimensions of this rectangular prism: n, n + 7, n + 8.

We can assume that these are the length, width, and height of the rectangular prism (not in any specific order).

Let's substitute these values into the formula to find the volume of the prism, written as a polynomial in standard form.

  • V = l × w × h
  • V = (n) × (n + 7) × (n + 8)
  • V = (n² + 7n) × (n + 8)
  • V = n³ + 8n² + 7n² + 56n
  • V = n³ + 15n² + 56n

The volume of the prism is n³ + 15n² + 56n. This is in standard form because the terms are listed in descending power order.

6 0
3 years ago
A sequence is defined recursively by the formula f(n 1) = f(n) 3 . the first term of the sequence is –4. what is the next term i
ch4aika [34]

The sequence whose <em>first</em> term is - 4 and defined recursively by the formula f(n + 1) = f(n) + 3 have the element - 1 as the <em>next</em> term. (Correct choice: B)

<h3>How to determine an element of a sequence</h3>

In mathematics, sequences are sets whose elements observe at least a condition, which is represented by a <em>recursion</em> formula in this question:

f(n + 1) = f(n) + 3

Thus, the following term of the sequence is:

f(2) = f(1) + 3

f(2) = - 4 + 3

f(2) = - 1

The sequence whose <em>first</em> term is - 4 and defined recursively by the formula f(n + 1) = f(n) + 3 have the element - 1 as the <em>next</em> term. (Correct choice: B)

<h3>Remark</h3>

The statement is poorly formatted and reports typing mistakes. Correct statement is:

<em>A sequence is defined recursively by the formula f(n + 1) = f(n) + 3. The first term of the sequence is - 4. What is the next term in the sequence? </em><em>a)</em><em> - 7, </em><em>b)</em><em> - 1, </em><em>c)</em><em> 1, </em><em>d)</em><em> 7</em>

To learn more on sequences: brainly.com/question/21961097

#SPJ1

4 0
2 years ago
The number of different species of plants in some gardens is recorded.
PolarNik [594]

(a) The mean of the number of different species of plants in some gardens is 4.5 .

(b) The standard deviation of the number of different species of plants in some gardens is 2.12 (Approximately)

It is given in the question that the number of different species recorded are:-

1 2 3 4 4 5 5 6 7 8

We have to find the mean and standard deviation of the given data of the number of plants of different species.

(a) We know that, the formula for mean is :-

Sum of all the observations/ Total number of observations

Hence,

Mean = \frac{1+2+3+4+4+5+5+6+7+8}{10} =\frac{45}{10}=4.5

(b) Standard deviation = \sqrt{\frac{Sum(X-m)^{2} }{N}  }

Where,

X = each value

m = mean

N = number of values

Hence,

Sum(X-m)^{2} =(1-4.5)^{2}+(2-4.5)^{2}+ (3-4.5)^{2}+ (4-4.5)^{2}+ (4-4.5)^{2}+ (5-5.5)^{2}+ (5-5.5)^{2}+ (6-5.5)^{2}+ (7-5.5)^{2}+ (8-5.5)^{2}\\ \\ Sum(X-m)^{2}=(-3.5)^{2} +(-2.5)^{2}+ (-1.5)^{2}+ (-0.5)^{2}+ (-0.5)^{2}+ (0.5)^{2}+ (0.5)^{2}+ (1.5)^{2}+ (2.5)^{2}+ (3.5)^{2} \\\\

Sum(X-m)^2=12.25+6.25+2.25+0.25+0.25+0.25+0.25+2.25+6.25+12.25\\\\=42.5

Standard deviation = {\sqrt{\frac{{42.25}}{10} }} =\frac{6.7}{\sqrt{10} }=\frac{6.7}{3.16}=2.12  (approximately).

To learn more about mean, here:-

brainly.com/question/13451489

#SPJ4

4 0
1 year ago
Other questions:
  • PLEASE HELP!!
    7·2 answers
  • Factor completely x2 - 8x + 16
    8·1 answer
  • A local Dot Dress Shop is selling a suit for $99. Due to changing styles the 1st markdown was 8% and the second markdown 25%. Th
    10·1 answer
  • A number increased by 7
    11·1 answer
  • List this greatest to least 6x2/5, 3 2/3 x 2/5, 2/7x2/5, 2/2x 2/5
    13·1 answer
  • The rate of U.S. per capita sales of bottled water for the period 2000-2010 can be approximated by
    15·1 answer
  • Solve y/2+22=38 for y
    15·1 answer
  • If sample data come from a population that is not normally distributed, which
    13·1 answer
  • Which rational number is positive?
    12·2 answers
  • !!Help Please!!<br> Find cos 0 20 16 12
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!