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vekshin1
2 years ago
14

(a) A square has a perimeter of 8 cm. What is the length of each side?

Mathematics
1 answer:
lesantik [10]2 years ago
7 0

Answer: 2

Step-by-step explanation:

Perimeter is all the sides added up together so a square has 4 sides. 8/4= 2

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Victoria earns $255 by working 20 hours each week
Alborosie
She would make $98.50 in 10 hours.

Explanation :
255/20 = 12.75
12.75 - 2.90 = 9.85
9.85 x 10 = 98.50
6 0
3 years ago
The question is number 16
stellarik [79]
18×7+5 is your answer. The answer for the problem is 18×7=126. 

126+5=131. 
3 0
3 years ago
One group of scientists (Group A) has measured a time for a particular chemical reaction to be completed to be 7.34 ± 0.05 s. A
Nesterboy [21]

Answer:

1. Group A and B agree with each other.

2. Group A and C do not agree with each other.

Step-by-step explanation:

When we are analizing this problem, we will see what are the ranges of this measured times. Since we are taking into account the error we can see that :

  • Group A varies from 7.34-0.05 to 7.34+0.05. So the limits are (7.29 ;7.39)
  • Group B varies from 7.38-0.03 to 7.38+0.03. So the limits are (7.35; 7.41)
  • Group C varies from 7.46-0.06 to 7.46+0.06. So the limits are (7.40; 7.52)

Question 1 is about the overlapping response in Group A and Group B. And yes, we have an overlap between 7.35 to 7.39. Among this times both group A and B are in agree with each other within the experimental uncertainty.

Question 2 is now referring to Group A and Group C. And no, there isn't any common time where both groups agree with each other.

7 0
3 years ago
Can you help me answer the question please :l
liberstina [14]

27

You can find the area of a triangle with base b and height h using this formula.

A=

1

2

bh

The triangle has base b=6miles and height h=9miles.

Find the area.

A

=  

1

2

bh

=  

1

2

(6)(9)

= (3)(9)

= 27

The area of the triangle is 27 square miles.

4 0
3 years ago
Marie has a small copy of rene magritte's famous painting, the schoolmaster. Her copy has dimensions 2 inches by 1.5 inches. The
Andrej [43]
We just multiply the scale to the dimensions
2 in to original is: 2×40= 80 cm
or do proportions:
\frac{2}{x}=\frac{1}{40}
=\frac{2*40}{1}=x
=80 cm=x the original dimension.
Same thing to the other side.
1.5×40=60 cm
or proportions again:
\frac{1.5}{y}=\frac{1}{40}
\frac{1.5*40}{1}=y
60 cm=y 
60 cm is the original dimension
80 cm times 60 cm ORIGINAL DIMENSION
4 0
3 years ago
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