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Mekhanik [1.2K]
4 years ago
6

The weight of a rock sample is measured to be 2.5 ponds. What is the percent of error in the measurement?

Mathematics
1 answer:
e-lub [12.9K]4 years ago
5 0
That makes no sense bc you can't find the percent of error without another number
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Hurry!
PolarNik [594]

Answer: 3

Step-by-step explanation:

Volume = pir2h/3

3 0
3 years ago
Sharon read a 300 page Book. She read at a rate of 15 pages per day in d days.
valkas [14]

Hey Y'all!!!

Answer:

15 times D= 300    

the 15 is pages

D is pages per day

300 is amount of total pages

Hope this helped!

8 0
3 years ago
Peter is x years old and his sister is 5 years older. If the product of their ages is 84, form an equation in x and solve it to
daser333 [38]

Answer:

x^2 + 5x - 84 = 0

x = 7

Step-by-step explanation:

let the sister's age = y

sister's age (y)  = 5 + x  equation 1

xy = 84  equation 2

Make y the subject of the formula in equation 2

y = 84/x

equate equation 1 and 2

84/x = 5 + x  equation 3

Multiply equation 3 by x

84 = 5x + x^2

x^2 + 5x - 84 = 0

tjis can be solved using quadratic equation

x^2 -7x + 12x -84 = 0

x(x + 12) -7(x + 12)

x = 7 or - 12

age cant be negative so his age is 7

3 0
3 years ago
Help me find the surface area of a triangular prism with work please
Leokris [45]
The diagram shows how the surface area can be "flattened" into two rectangles, one for the end triangles that is 6 cm by 5.3 cm, and one for the lateral area that is 13 cm by 19.3 cm.

The total area is
.. (6 cm)*(5.3 cm) +(13 cm)*(19.3 cm)
.. = 31.8 cm^2 +250.9 cm^2
.. = 282.7 cm^2

5 0
3 years ago
Help..
timofeeve [1]

Answer:

1. 44

2. 73

Step-by-step explanation:

1:

1/2 (7) (4) + 6 (5) =

1/2 (28) + 30 =

14 + 30 =

44

2:

12 (6) + 1/4 (2^2) =

72 + 1/4 (4) =

72 + 1 =

73

8 0
3 years ago
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