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Anna35 [415]
3 years ago
7

The Martinez family has $1543 a month income. They have $978 and fixed expenses, money they have to spend. How much money do the

y have left after the fixed expenses
Mathematics
1 answer:
KengaRu [80]3 years ago
8 0

Answer:

$565

Step-by-step explanation:

1543-978=565

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The difference between two integers is 8 and their product is 65. Assume that the larger of the two numbers is x. Write a quadra
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A quadratic equation in standard form that can be used to determine the value of x is x^{2} - 8x - 65 = 0.

The Factor of the equation from Part B is (x - 13)(x + 5)  and the possible solutions to the equation is x = 13 or -5.

The value for the second number is 5

<h3>Word Problem Leading To Quadratic Equation.</h3>

The general formula for quadratic equation in a in standard form is

ax^{2} + bx + c = 0

Given that the  difference between two integers is 8

Let the two integers = x and y,

and their product is 65. If the larger of the two numbers is x. Then,

x - y = 8 and xy = 65

Since we are looking for the value of x, make y the subject of formula in the first equation.

y = x - 8

Substitute y in the second equation.

x(x - 8) = 65

x^{2} - 8x - 65 = 0

x^{2} - 13x + 5x - 65 = 0

(x - 13)(x + 5) = 0

x = 13 or -5

We will ignore -5 since x is the larger number.

To get y Substitute x in the second equation.

xy = 65

13y = 65

y = 65/13

y = 5

Therefore, a quadratic equation in standard form that can be used to determine the value of x is x^{2} - 8x - 65 = 0. The Factor of the equation from Part B is (x - 13)(x + 5)  and the possible solutions to the equation is x = 13 or -5. The value for the second number is 5

Learn more about Quadratic Equation here: brainly.com/question/25841119

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5 0
2 years ago
Help! Please show work. -14-12x=-3(4x-8)
defon

Answer:

no solution

Step-by-step explanion

there is no solution since the x's cancel out

3 0
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rodikova [14]

Answer:

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=(121-81)

=*40

That was the simplified expression

Answer = 3.14 * 40 = 125.6m^2

Step-by-step explanation:

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3 years ago
What is the least common multiple of 21 and 30?
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Answer should be 210
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3 years ago
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Two-step equation<br> 2x+5x=-1<br> What's the answer for x=
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-1 / 7 = x

You need to combine the 2x and 5x then devise the 7x from -1
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