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oksano4ka [1.4K]
3 years ago
9

What are 5 rules to follow in a science lab?

Mathematics
1 answer:
siniylev [52]3 years ago
3 0

Answer:

Step-by-step explanation:

1. Wear safety glasses

2. Be accompanied by an adult

3. Wear proper lab clothing

4. Alert Lab instructor if an accident were to happen

5. Follow all instructions given by lab instructor

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The scale on a map is 1 cm:30 km. How many centimeters would be used to represent 45 kilometers?
topjm [15]
Hi there!

To solve this problem, let's set up a proportion: 1/30 = x/45. Now, cross-multiply to get an equation: 30x = 45. Now, divide each side by 30 to figure out how many centimeters would be used to represent 45 kilometers: x = 2/3 or 0.666 cm.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
7 0
3 years ago
Question 11 pts
trapecia [35]

Answer:

they have to be congruent

Step-by-step explanation:

both rectangles have the same perimeter which means there Identical

5 0
3 years ago
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Amelia can do 5 sit-ups. Her go is to increase to 50 sit-ups by adding 5 more sit-ups to her training schedule each week. Amelia
Mademuasel [1]

Answer:

10 weeks

Step-by-step explanation:

5 0
3 years ago
If the modulus is 4 and the real part is –2.0, what is the imaginary part?
faltersainse [42]

Answer:

3.5

Step-by-step explanation:

edgenuity2020

3 0
4 years ago
Surface area of a sphere is 615.752 m2, what is the volume of the sphere?
const2013 [10]

B

the volume (V) of a sphere = \frac{4}{3} πr³

We require to know the radius r to calculate the volume

using surface area of a sphere = 4πr² = 615.752

divide both sides by 4π

r² = \frac{615.752}{12.56} = 49.0248...

take the square root of both sides

r = \sqrt{49.0248..} ≈ 7, hence

V= \frac{4}{3} × π × 7³ = 1436.76 m³ → B



8 0
4 years ago
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