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
Stella [2.4K]
3 years ago
13

Which of the following expression is a perfect square?

Mathematics
1 answer:
musickatia [10]3 years ago
8 0
B because it is (2x)(2x) which is equal to 4x^2
You might be interested in
PLEASE ANSWER QUICK A manufacturing facility pays its employees an average wage of $4.50 an hour with a standard deviation of 50
evablogger [386]

Answer:

B.77.4%

Step-by-step explanation:

Mean wage (μ) = $4.50

Standard deviation (σ) = $0.50

For nay given salary X, the z-score is given by:

z=\frac{X-\mu}{\sigma}

For X = $3.75, the z-score is:

z=\frac{3.75-4.50}{0.50}\\z=-1.5

For X = $5.00, the z-score is:

z=\frac{5.00-4.50}{0.50}\\z=1

A z-score of -1.5 corresponds to the 6.68th percentile, while a score of 1 corresponds to the 84.13th percentile. Therefore, the percentage of workers getting paid between $3.75 and $5.00 an hour is:

P=84.13-6.68\\P=77.45\%

The answer is alternative B.77.4%

8 0
3 years ago
Which of the following is not a solution to the inequality
RUDIKE [14]

Answer: A   4

step by step explmationn

6 0
3 years ago
Read 2 more answers
Y=5x-2 graphed is 1/3 a solution to the equation
ivolga24 [154]

Answer:

1/3 =5x-2

3(1/3)=3(5x-2)

1=15x-6

7=15x

x=7/15   (7/15 , 1/3)

Step-by-step explanation:

8 0
3 years ago
Triangle DEF has coordinates D(3, 4), E(4, 1), and F(1, -2). If the triangle is
fenix001 [56]

Answer:

Hello! answer: coordinates of E' are (16, 4)

Step-by-step explanation:

4 × 4 = 16 4 × 1 = 4 therefore the new coordinates are (16, 4)

5 0
2 years ago
The speed of light is approximately 299,000,000 meters per second.
jek_recluse [69]

Answer:

2.99 x 10⁸ meters per second

Step-by-step explanation:

Scientific notation (also called "Standard form") is written in the form of a \times 10^n, where  1\leq a < 10  and  n is any positive or negative whole number.

To <u>convert</u> a number into <u>scientific notation</u>, move the decimal point to the left or right until there is <u>one digit before the decimal point.</u>

The number of times you have moved the decimal point is the power of 10 (n).

If the decimal point has moved to the <u>left</u>, the power is <u>positive</u>.

If the decimal point has moved to the <u>right</u>, the power is <u>negative</u>.

<u>To convert the given number to scientific notation</u>

The decimal point for the given number 299000000 is after the last zero:

⇒  299000000.

Move the decimal point 8 places to the left:  

⇒ 2.99000000

Get rid of the redundant zeros:

⇒ 2.99

Multiply by 10 to the power of the number of decimal places moved:  

⇒ 2.99 x 10⁸

Therefore, the speed of light using scientific notation is:

  • 2.99 x 10⁸ meters per second
7 0
2 years ago
Other questions:
  • If you substitute 3 for x what is the matching value for y? -3x-y=-7
    10·1 answer
  • How do you find out the answer
    14·1 answer
  • I have a math related Q !!
    10·1 answer
  • Multiply (8.42×10^3)(5×10^2) in scientific notation
    10·1 answer
  • In a volcano, erupting lava flows continuously through a tube system about 17 kilometers to the sea. Assume a lava flow speed of
    10·2 answers
  • Sam opened a money-market account that pays 2% simple interest. He started the account with $7,000 and made no further deposits.
    7·2 answers
  • If f(x) =2x3 - 1, then f(-3)=
    11·2 answers
  • If we can show<br> then EH || FG
    10·1 answer
  • Solve the inequality y-12&lt;-5
    13·1 answer
  • Write an expression that is equivalent to 21h - 10h + 16 - 9 + 14h + 5 .
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!