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Vitek1552 [10]
3 years ago
12

What is 70% of 20? Help me

Mathematics
2 answers:
Pani-rosa [81]3 years ago
4 0

Answer:

14

Step-by-step explanation:

70% = 0.70

of means multiply or "×"

So, 0.70 × 20 = 14

Katena32 [7]3 years ago
3 0
14 20x0.70=14 dose that answer your question
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3 years ago
For the expression 34- 34a to have a negative​ value, what must be true about the value of a ​?
MArishka [77]

Answer:

a>0

Step-by-step explanation:

if a is negative then the subtraction sign would switch. therefore, for the expression to have a negartive value a must be greater than 0

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3 years ago
Convert Зcis 180° to rectangular form.<br> А. -3<br> в. -3i<br> с. з<br> D. Зі.
Sunny_sXe [5.5K]

Answer:

-3

Step-by-step explanation:

3 cis(180^\circ) means 3(\cos(180^\circ)+i \sin(180^\circ))

What is the x-coordinate value that corresponds to \theta=180^\circ. That value is -1.

What is the y-coordinate value that corresponds to \theta=180^\circ. That value is 0.

So this implies \cos(180^\circ)=-1 \text{ and } \sin(180^\circ)=0.

3 cis(180^\circ)  

3(\cos(180^\circ)+i \sin(180^\circ))

3(-1+i (0))

3(-1+0)

3(-1)

-3

5 0
3 years ago
PLS HELP ME ASAP FOR 7 and 8!! (MUST SHOW WORK!!) + GIVING BRAINLIEST AND THANKS
VladimirAG [237]
Question 7:

Diameter = 6.2 cm so Radius = 3.1 cm
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Question 8:

Circumference = 2πr
16π = 2πr
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7 0
3 years ago
Read 2 more answers
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