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3 years ago

X squared plus 3X -4 equals six

1 answer:

5 0

X^2 + 3x - 4 = 6
x^2 + 3x - 10 = 0 (Now reverse FOIL)
(x + 5)(x - 2)(Now x will equal the opposites of your numbers)
x = -5
x = 2
Hope this helped!

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The amount after 7 years is given by:
$A=15000(1+\frac{0.048}{4})^{4\times7}=20,948.15$
The answer is: $20,948.15

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In a factory, a parabolic mirror to be used in a searchlight was placed on the floor. it measured 50 centimeters tall and 90 cen

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Y=-2/81x^2+50 is the answer

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Use quadratic formula to find both solutions to the quadratic equation given below . 3x^2-5x-1=0

Rudiy27

Answer:

$x1=\frac{5+\sqrt{37}} {6}$

$x2=\frac{5-\sqrt{37}} {6}$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^{2} -5x-1=0$

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substitute in the formula

$x=\frac{5(+/-)\sqrt{(-5)^{2}-4(3)(-1)}} {2(3)}$

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garik1379 [7]

10d+ 25q+5n= 805

D= n+8

Q= n+ 5

10d+ 25q+5n= 805

10(n+8)+25(n+5)+5n=805

10n+80+25n+125+5n=805

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D= 15+8

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Q=15+5

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So 15 nickels ,23 dimes and 20quarters .

To check

15(0.05)= $0.75

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Add it

5.00+2.30+0.75=8.05

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8.05=8.05

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Answer:

Rectangle w=72

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Rectangle

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