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SIZIF [17.4K]
3 years ago
12

Twenty-four pairs of adult brothers and sisters were sampled at random from a population. The difference in heights,

Mathematics
1 answer:
arlik [135]3 years ago
7 0

Answer: 1.79 inches

Step-by-step explanation: took the quiz

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Question 22 of 25
mote1985 [20]

Answer

B

Step-by-step explanation:

Is the answer !

5 0
3 years ago
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Simplify.
Yuki888 [10]

Answer:

(B) -25/4

Step-by-step explanation:

-5/3 ÷ 4/15

Copy dot flip

-5/3 * 15/4

Rewriting for easier math

-5/4 * 15/3

-5/4 * 5

-25/4

4 0
3 years ago
Beau buys a 3-pound bag of trail mix for a hike. He wants to make one-ounce bags for his friends with whom he is hiking. How man
zavuch27 [327]
1 pound=16 ounches
3 times 16=48
48 ounces means 48 one ounce bags
7 0
3 years ago
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In​ 2016, 1 out of every 5 people under the age of 50 used a cell phone to read​ e-books. If there were approximately 225 millio
statuscvo [17]

Answer: 45

Step-by-step explanation:

In​ 2016, 1 out of every 5 people under the age of 50 used a cell phone to read​ e-books. This means that 2 out of every 10 people under the age of 50 used a cell phone to read​ e-books. Also, 3 out of every 15 people under the age of 50 used a cell phone to read​ e-books.

Therefore, if there were x people under the age of 50 in​ 2016, then the number that used a cell phone to read​ e-books would be

1/5 × x = x/5

If there were approximately 225 million people under the age of 50 in​ 2016, then the number that were likely to have read an​ e-book on a cell​ phone is

225/5 = 45 people.

3 0
3 years ago
practice factoring a difference of squares. which expressions represent a perfect square monomial and its square root? check all
ohaa [14]

The perfect square monomial and its square root are shown in options 1, 2, and 5.

  • A perfect square in mathematics is an expression that factors into two equally valid expressions. A monomial is a single phrase that is made up of the product of positive integer powers of the constants, variables, and constants. Consequently, a monomial that factors into two monomials that are the same is called a perfect square monomial.
  • 1) 121, 11
  • 11² = 121
  • A perfect square monomial and its square root are represented by this equation.
  • 2) 4x², 2x
  • (2x)² = 4x²
  • A perfect square monomial and its square root are represented by this equation.
  • 3) 9x²-1, 3x-1
  • (3x-1)² = 9x²- 6x +1
  • This phrase does not depict a square monomial and its square root in perfect form.
  • 4) 25x, 5x
  • (5x)² = 25x²
  • This phrase does not depict a square monomial and its square root in perfect form.
  • 5) 49(x^4), 7x²
  • (7x²)² = 49(x^4)
  • A perfect square monomial and its square root are represented by this equation.

To learn more about monomial, visit :

brainly.com/question/9183135

#SPJ4

8 0
1 year ago
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