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expeople1 [14]
2 years ago
5

Anthony's age, x, is 5 less than twice Brian's age, y. Brian's age is 7 less than Anthony's age. Which system of equations repre

sents this
situatIon
Mathematics
1 answer:
ch4aika [34]2 years ago
6 0

Answer:

Anthony's age: 2y - 5 = x

Brian's age: x - 7 = y

Step-by-step explanation:

Anthony: If his age is 5 less, this means - 5 is in the equation. It is 5 less than twice Brian's age, meaning × 2, or in algebra, 2y. So Anthony's age is 2y - 5

Brian: His age is 7 less so this means - 7 is in the equation. We know Anthony's age is x so Brian's age is x - 7

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Sid starts with savings of £13
vfiekz [6]

Answer:

after 6 weeks

Step-by-step explanation:

Sid and Tim starts saving each week.

Sid starts his savings with initial amount of £13.00

Tim starts his saving with initial amount of £00.00

Each week from now Sid will save = £3.50

Tim will save each week = £3.00

Let's assume after 'x' weeks the amount of Sid would be = £ (13 + 3.50x)

and the amount of Tim's saving after x weeks = £ (3x)

The ratio of their savings in x weeks would be = 17 : 9

Now the expression we get,

(13 + 3.50x) : (3x) = 17 : 9

\frac{13+3.50x}{3x}=\frac{17}{9}

9(13 + 3.50x) = 17(3x)

117 + 31.5x = 51x

117 = 51x - 31.5x

117 = 19.5x

x=\frac{117}{19.5}

x = 6

After 6 weeks the savings of Tim and Sid would be in the ratio of 17 : 9.

5 0
2 years ago
NEED HELP URGENT<br><br> Please help me with my math homework
kvv77 [185]

2y=3x+5 im pretty sure

8 0
3 years ago
Read 2 more answers
What is 82.403 rounded to the nearest whole number​
katrin2010 [14]

Answer: 82

Step-by-step explanation:

5 0
3 years ago
Helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
aleksklad [387]

Answer:

4,826.25

Step-by-step explanation:

If it cost 82.5 A liter and she has 58 Liters. Just multiply.

3 0
3 years ago
3
iren2701 [21]

Answer:

B

D

A

Step-by-step explanation:

Given:

A. 2x^3-x^{2} -6x

B. 2x^3+8x+4

C. 3x^4+x^{2} +x-7

D. 3x^4-3x^{2} +5x-7

Now, let us evaluate the given expressions one by one.

(4x^3-4+ 7x)-(2x^3-x-8)\\\Rightarrow 4x^3-4+ 7x-2x^3+x+8\\\Rightarrow 2x^3+8x+ 4

It is equation B.

So, (4x^3-4+ 7x)-(2x^3-x-8) is equivalent to B.

(-3x^2+x^4+x)+(2x^4-7+4x)\\\Rightarrow -3x^2+x^4+x+2x^4-7+4x\\\Rightarrow3x^4-3x^{2} +5x-7

It is equation D.

So, (-3x^2+x^4+x)+(2x^4-7+4x)  is equivalent to D.

(x^{2} -2x)(2x+3)\\\Rightarrow 2x^3-4x^{2} +3x^{2} -6x\\\Rightarrow 2x^3-x^{2} -6x

It is equation A.

So, (x^{2} -2x)(2x+3) is equivalent to A.

So, answer is:

B

D

A

8 0
3 years ago
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