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mamaluj
9 days ago
6

the product of two numbers is 450. the first number is half the second number. which equation can be used to find x, the greater

number?
Mathematics
2 answers:
AnnZ [12.3K]9 days ago
4 0
Xy = 450

y = x/2 => x=2y  plugging this into the first equation yields 2y*y=450 => y^2 = 225

y=15 since 15*15=225

x=2y therefore x=2*15 = 30 

x=30
y=15

I hope this is helpful to you 
lawyer [12.5K]9 days ago
3 0

Response:

\frac{1}{2}y\cdot y=450

Detailed explanation:

Let x denote the first number, while y denotes the second number.

We are informed that the product of the two numbers is 450, which can be expressed as an equation:

x\cdot y=450...(1)

Additionally, the condition states that the first number is half the second number. We can express this as another equation:

x=\frac{1}{2}y...(2)

To find the larger number, y, we will substitute the second equation into the first, resulting in:

\frac{1}{2}y\cdot y=450

Thus, the equation we need is \frac{1}{2}y\cdot y=450.

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1 month ago
Consider this system of equations. Which shows the second equation written in slope-intercept form? y = 3 x minus 2. 10 (x + thr
Leona [12618]

Question

Consider this system of equations. Which shows the second equation written in slope-intercept form?

y = 3x - 2.

10(x + \frac{3}{5} ) = 2y

A. y = 5x + \frac{3}{10}

B. y = 5x + 3

C. y = \frac{1}{5} x + \frac{3}{25}

D. y = \frac{1}{2} x + 6

Response:

B. y = 5x + 3

Detailed explanation:

Given

Equation 1: y = 3x - 2.

Equation 2: 10(x + \frac{3}{5} ) = 2y

Required:

Equivalent of equation 2

To achieve an equivalence of equation 2 (in slope-intercept form), we must first simplify it

10(x + \frac{3}{5} ) = 2y

Open the brackets

10*x + 10 *\frac{3}{5} = 2y

10x + \frac{30}{5} = 2y

Simplify the fractions

10x + 6 = 2y

Divide by 2

\frac{10x}{2} + \frac{6}{2} = \frac{2y}{2}

5x + 3 = y

Re-arrange

y = 5x + 3

Next, we compare options A through D with y = 5x + 3

A. is not equal to y = 5x + 3

Next, we check the second option

B.

y = 5x + 3 matches y = 5x + 3

This option represents the second equation in slope-intercept format.

We check for further options

C.

y = \frac{1}{5} x + \frac{3}{25}

Convert the fraction into a decimal

y = 0.2x + 0.12

This does not equal y = 5x + 3

D.

y = \frac{1}{2} x + 6

Convert the fraction to decimal

y = 0.5x + 6

This also does not equal to y = 5x + 3

Therefore, the only option equivalent to the second equation in slope-intercept form is Option B

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11 days ago
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8 0
25 days ago
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Zina [12379]
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