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lorasvet [3.4K]
3 years ago
8

Please help me on this question as soon as possible….

Mathematics
2 answers:
Sonja [21]3 years ago
6 0
18+27f-39 *distribute*
27f-21 *add like terms*
tensa zangetsu [6.8K]3 years ago
3 0
First, you want to use the distributive property on 3(9f - 13): 

18 + 27f - 39 

Then, you need to subtract 18 from 39 (you will get a negaitve number): 

27f - 21 
Your answer should be the bottom left one: 27f - 21
Hopefully that helped! :) 
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Mary invests £12,000 in a savings account the account pays 1.5% compound interest per year work out the value of her investment
Lesechka [4]

Answer:

The value of Mary's investment after two years = £12362.7

Step-by-step explanation:

P = Principal / initial amount

R = rate of interest per cent per year

T = number of years

A = final amount at the end of T years

Then:

A = P*(1 + R/100)^2

In our example:

P = £12000

R = 1.5 per cent per year

T = 2 years

Thus:

A = 12000*(1 + 1.5/100)^2

  = 12000*(1 + 0.015)^2

  = 12000*(1.015)^2

   = 12000*(1.030225)

   = 12362.7

Value of investment after two years = £12362.7

5 0
3 years ago
Karl drove 617.3 miles. For each gallon of gas the car can travel 41 miles.Select a reasonable estimate of the number of gallons
zaharov [31]
Time for fractions!!!

I’m going to set a rate of miles per gallon and then cross multiply to get me answer.

41miles/gallon = 617.3/xgallons

617.3 multiplied by 1 and then divided by 41 = about 15.05 gallons

A reasonable estimate then is 15 and a half gallons, because rather than measuring down to the hundredths, the next closest and reasonable measurement is 15 and a half or under.

Comment if you don’t understand and I’ll try to help.

5 0
3 years ago
Square root 70 times square root 10
AlekseyPX
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4 years ago
A bowl contained 49.7 grams of salt. Then, Charlie poured in another 41.14 grams. How much salt does the bowl contain now?
professor190 [17]

Answer:

90.84

Step-by-step explanation:

49.7+41.14= 90.84

6 0
3 years ago
Ashton and Kamir are arguing about how a number trick they heard goes. Ashton tells Andrew to think of a number, multiply it by
Artemon [7]

Answer: The number was 9.

Step-by-step explanation:

Let the number be 'x;.

think of a number, multiply it by five and subtract three from the result :

According to Ashton, the expression would be :

5x-3

Kamir tells Andrew to think of a number, add five and multiply the result by three:

According to Kamir, the expression would be :

3(x+5)

At last, they get the same number :

5x-3=3(x+5)\\\\5x-3=3x+15\\\\5x-3x=15+3\\\\2x=18\\\\x=\dfrac{18}{2}\\\\x=9

Hence, the number was 9.

5 0
3 years ago
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