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Vanyuwa [196]
3 years ago
9

Twice the larger of two consecutive integers is equal to fifteen less than three times the smaller. Find the integers.

Mathematics
1 answer:
Alexxandr [17]3 years ago
7 0

Answer:

17,18

Step-by-step explanation:

let the smaller integer be "a" and the larger be "b"

Then 2b = 3a -15              ........................equ 1

but they are consecutive integers, b= a+1 ; substitute b into equ 1,thus,

2(a+1) = 3a - 15

2a + 2 = 3a-15

collect like terms,

2+15 =3a-2a

17 = a

b= a+1

b = 17+1

b=18.

The integers are 17,18

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Answer:

Second choice

and the last 2 choices

Step-by-step explanation:

32m/16m=2 and our constant is 3 not 2 so not choice A

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4m/2m=2 and our constant is 3 not 2 so not choice C

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32m^2/16m=2m and 48m/16m=3 so this last choice too

8 0
3 years ago
40% of a 12,000 acre forest is being logged how many acres will be logged
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hope this helps
3 0
3 years ago
Read 2 more answers
Not too sure about this one
elena-s [515]

Answer:

see explanation

Step-by-step explanation:

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x = 11y - 1 ( add 1 to both sides )

x + 1 = 11y ( divide both sides by 11 )

y = \frac{x+1}{11}, hence

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3 0
4 years ago
Sandra needs to make 500 L hand sanitizer with 75% alcoholic solution. He has only two of the alcoholic solutions available, a 6
shtirl [24]

If Sandra mixes <em>x</em> L of 65% solution with <em>y</em> L of 90% solution, then the resulting mixture has a total volume of

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litres of alcohol.

Solve the first equation for <em>y</em> :

<em>y</em> = 500 - <em>x</em>

<em />

Substitute this into the second equation and solve for <em>x</em> :

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Solve for <em>y</em> :

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So, Sandra should mix 300 L of 65% solution with 200 L of 90% solution.

8 0
3 years ago
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