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Sphinxa [80]
3 years ago
12

PLSSS HELP ME I WILL MARK!!!!!!!!

Mathematics
1 answer:
boyakko [2]3 years ago
6 0
1/10*(f-220) or 0.1(f-220)
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2. An electronics store sold 1,500 CD's this year. The previous year, the store sold 990
Vera_Pavlovna [14]

Answer:

52%

Step-by-step explanation:

First, find the difference between this year's sales and the previous'. 1500-990=510.

Now we can divide 990 by 510 to find the percent increase. 510/990=0.515151515152, or 52%.

8 0
3 years ago
Read 2 more answers
A metal bar has the D of 7.9 g/mL. If the volume of the bar is 500mL, what is the mass in kg?​
morpeh [17]

Answer:

It will be 0.5kg cuz kg and liters are same

8 0
3 years ago
Solve the proportion.<br><br> s+1/4 = 4/8<br> s=
LUCKY_DIMON [66]

Answer:

8 = 16

Step-by-step explanation:

1/4  =  4 /8

 

Cross multiply:

1 * 8 = 4 * 4

Simplifying

1 * 8 = 4 * 4

Multiply 1 * 8

8 = 4 * 4

Multiply 4 * 4

8 = 16

Solving

8 = 16

3 0
3 years ago
Solve using the quadratic formula. Approximate answers to the nearest tenth.<br> Help
Pepsi [2]

Answer:

x = 2.4 or x = 0.3

Step-by-step explanation:

3x² - 8x + 2 = 0

Quadratic formula

x = {-b ±√b² - 4ac} / 2a

a = 3

b = -8

c = 2

x = {-b ±√b² - 4ac} / 2a

= {-(-8) ±√(-8)² - 4*3*2} / 2*3

= (8 ± √64 - 24) / 6

= (8 ± √40) / 6

= (8 ± 2√10) / 6

= 8/6 ± 2√10/6

= 4/3 ± √10 / 6

x = 4/3 + √10 / 6 or 4/3 - √10 / 6

x = 2.4 or x = 0.3

6 0
3 years ago
a man uses 60 litre of petrol for a journey of 750 km how many litres will be used for a journey of 350 km​
andrew11 [14]

Answer:

28 litres

Step-by-step explanation:

60l/750km = .08

.08 litres used per kilometer

.08*350km = 28l

6 0
3 years ago
Read 2 more answers
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