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3 years ago

15x (1/3+1/5) I need help with this one also?

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

6 0

8x

explanation:

join 1/3 + 1/5 = 8/15

15• 8/15x

multiply fractions and cancel common factor (15)

= 8x

love history [14]3 years ago

3 0

Answer:

Step-by-step explanation:

15 x (1/3+1/5) make common denominators and add

15 x (5/15+3/15) add fractions

15/1 x (8/15) 15 and 15 cancel out and become 1

1/1 x 8/1

1 x 8

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Answer:

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Step-by-step explanation:

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3 years ago

Tanyss's house has 25 windows. Her brother has washed 22 of the windows. What percent of the windows has her brother washed?

AveGali [126]

Answer:

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3 years ago

Slove the simoltanous equation by using substitution or elimination method 5x-3y=1 3x+2y=1

xxTIMURxx [149]

By substitution method 

5x - 3y =1

3x + 2y = 1

_____o____o____

$5x - 3y = 1 \\ 5x = 1 + 3y \\ x = \frac{1 + 3y}{5}$

______o____o_____

$3x + 2y = 1 \\ 3( \frac{1 + 3y}{5} ) + 2y = 1 \\ \frac{3 + 9y}{5} + 2y = 1 \\ \frac{3 +9y + 10y}{5} = 1 \\ \frac{3 + 19y}{5} = 1 \\ 3 + 19y = (1)(5) \\ 3 + 19y = 5 \\ 19y = 5 - 3 \\ 19y = 2 \\ y = \frac{2}{19}$

______o_____o____

$x = \frac{1 + 3y}{5} = \frac{1 + 3 \frac{2}{19} }{5} \\ x = \frac{1 + \frac{6}{19} }{5} = \frac{ \frac{19 + 6}{19} }{5} = \frac{ \frac{25}{19} }{5} \\ x = \frac{25}{19} \div 5 \\ x = \frac{25}{19} \times \frac{1}{5} \\ x = \frac{5}{19}$

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7 0

3 years ago

Suppose the average yearly salary of an individual whose final degree is a master's is $(blank) thousand less than twice that

cupoosta [38]

Complete question :

Suppose the average yearly salary of an individual whose final degree is a master's is $41 thousand less than twice that of an individual whose final degree is a bachelor's. Combined, two people with each of these educational attainments earn $118 thousand. Find the average yearly salary of an individual with each of these final degrees.

Answer:

Bachelors = $53000

Masters = $65000

Step-by-step explanation:

Given that :

Let Salary of bachelor's degree holder = b

Salary of Master's degree holder = 2b - 41000

Master's + bachelor's salary = $118,000

Hence,

2b - 41000 + b = 118,000

3b = 118000 + 41000

3b = 159000

b = 159000 / 3

b = $53,000

Bachelor's degree salary = $53,000

Master's degree salary ; 2b - 41000

2(53000) - 41000 = 65000

4 0

4 years ago

Given P = 2 (l + b) when l = 15 and P = 50, find b

Firdavs [7]

Answer:

b = 10

Step-by-step explanation:

P = 2 (l + b)

l = 15

P = 50

Substitute

50 = 2 (15 + b)

multiply

50 = 30 + 2b

subtract

20 = 2b

divide

b = 10

6 0

3 years ago

Read 2 more answers