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
qwelly [4]
3 years ago
13

Please help me so I can help my little sister

Mathematics
1 answer:
g100num [7]3 years ago
3 0

Answer: Valentina measured incorrectly.

Step-by-step explanation: 1 feet equals to 12 inches. If you substitute this value for all the other values like 5 ft and 8 inches (Noah's measurement). Firstly, 5 multiplied by 12 is 60, then you would add 8 to it. Caleb already measured the same amount of inches as Noah so we can just leave that one. Same with Mary, 3 * 12 inches = 36 plus 32 which is also 68. Finally, we are left with Valentina in which she has 2 * 12 inches =24 plus 48 which is 72, not 68. Hence, Valentina measured incorrectly.

You might be interested in
A computer can sort x objects in t seconds, as modeled by the function
r-ruslan [8.4K]

Answer:

  36 objects

Step-by-step explanation:

You want the value of x when t=9, so you're solving ...

  9 = 0.007x^2 +0.003x

  9 = 0.007(x^2 + 3/7x)

From here, we observe that an approximation is probably sufficient.

 9/0.007 = x(x +3/7) . . . . . the expression on the right is nearly x^2

  x ≈ 3/√.007 ≈ 35.9 ≈ 36

We can check:

  .007(36)(36 3/7) = 9.18

  .007(35)(35 3/7) = 8.68

To keep the computer busy for 9 seconds, it needs to sort 36 objects.

 

6 0
3 years ago
Which of the following is the product matrix AB?<br> i
Aneli [31]

Answer:

an divided by a3 equals answer

Step-by-step explanation:

FOR example 2x2 equal 4and I don't know this sorry

6 0
3 years ago
Read 2 more answers
Three square flower beds with side of 2m are dug in a rectangular piece of land whose length is 5.2 m and width is 4.8 m. What i
belka [17]

Answer: 12.96 m²

Step-by-step explanation:

The area of the piece of land that the flower beds were dug in is:

= Length * width

= 5.2 * 4.8

= 24.96 m²

The flower beds were 3 in number and all had the shape of a square.

Their area is:

= 3 * (Length * width)

= 3 * ( 2 * 2)

= 3 * 4

= 12 m² for all three flower beds

Remaining land:

= 24.96 - 12

= 12.96 m²

8 0
3 years ago
Can angles of 50 , 50 , 130 and 130 form angles at a point
postnew [5]

Answer:

yes they can

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Add [ –6 –2 2] + [–3 2 1]. <br><br> A. [–9 –3 –5]<br> B. [–6 0 3]<br> C. [–9 0 3]<br> D. [–3 0 3]
Rus_ich [418]
The answer should be C if you were to add each point.
6 0
4 years ago
Read 2 more answers
Other questions:
  • Two lighthouse
    13·2 answers
  • What is the difference in volume between a sphere with radius r and a sphere with radius 0.3r?
    13·1 answer
  • The letter b represents a constant. Solve the equation for x . bx=−7
    13·1 answer
  • what is the value of y for the line that has a slope of 1 and goes through the points (-4,y) and(-2,8)​
    10·1 answer
  • What is the area of the firgure?
    8·2 answers
  • 02.Cl.Algebrala
    10·2 answers
  • (-6)(-2x – 4y); x = 1, y = 3
    9·2 answers
  • Simplify the expression: 2x - 14x + 7
    5·1 answer
  • What is the domain of this function?
    10·2 answers
  • a train travelling at 60 km per hour takes 18 second to cross a 180 metre long platform find the length of the train​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!