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Veronika [31]
2 years ago
13

Three daily activities that involve electromagnetic energy?

Mathematics
1 answer:
castortr0y [4]2 years ago
7 0
1. tv waves
2. uv light
3. microwaves
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8.2<br> 5. In a '70% off' sale, a hat was £33.60.<br> Work out the original price.
Aleks [24]

100% - 70% = 30%

30% of what = £33.60?

Let p = original price

0.30p = 33.60

p = 33.60 ÷ 0.30

p = £112

3 0
3 years ago
Find the surface area of the cylinder to the nearest tenth of a square unit. Use 3.14 for pi :))) thank you !!
Leni [432]

Answer:

390.8 ft2 I think

Step-by-step explanation:

7 0
3 years ago
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Ennifer has as many pictures on her camera as Luisa does. Jennifer has 28 pictures on her camera. How
Gre4nikov [31]
28 + 28 = 56 pictures have Jennifer and Louisa in all.
6 0
2 years ago
Write in scientific notation: 0.0042
mylen [45]

Answer:

Scientific Notation:

4.2 × 10^-3

E-Notation:

4.2e-3

Engineering Notation:

4.2 × 10^-3

Real Number:

0.0042

______________________________

6120

Step-by-step explanation:

8 0
3 years ago
-4(5k-7) +2k= -2(9k+5)
Blababa [14]

Answer:

no solutions

Step-by-step explanation:

-4(5k-7) +2k= -2(9k+5)

Distribute

-20k +28 +2k = -18k -10

Combine like terms

-18k +28 = -18k -10

Add 18k to each side

-18k+18k +28 = -18k+18k  -10

28 = -10

This is never true so there are no solutions

3 0
3 years ago
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