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babunello [35]
4 years ago
10

Solve by factoring: 25X^2+5X-12=0

Mathematics
2 answers:
Galina-37 [17]4 years ago
4 0
Solve your equation step-by-step.

25x2+5x−12=0

Factor left side of equation.

(5x−3)(5x+4)=0

Set factors equal to 0.

5x−3=0 or 5x+4=0

x=3/5 or x=−4/5

Gennadij [26K]4 years ago
3 0
25x^2+5x-12=0 \\
25x^2-15x+20x-12=0 \\
5x(5x-3)+4(5x-3)=0 \\
(5x+4)(5x-3)=0 \\
5x+4=0 \ \lor \ 5x-3=0 \\
5x=-4 \ \lor \ 5x=3 \\
x=-\frac{4}{5} \ \lor \ x=\frac{3}{5} \\
\boxed{x=-\frac{4}{5} \hbox{ or } x=\frac{3}{5}}
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Fudgin [204]

Answer:

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Step-by-step explanation:

36-6=30

4 0
4 years ago
Find the exact value of y.
Alik [6]

Answer:

y = 2\sqrt{10}

Step-by-step explanation:

In left small right triangle: we have the square of left side = 5^2 + y^2 = 25 + y^2

In right small right triangle: we have the square of right side = 8^2 + y^2 = 64 + y^2

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4 0
3 years ago
What is the slope of (4,-2)(2,4) ?
ahrayia [7]

The slope between these two lines is -3.

In order to find this, we plug the two points into the slope formula below.

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Can anyone help solve question3 the (ii) and the question2 match the following
Trava [24]

Answer:

2.

i) (c)

ii) (d)

iii) (b)

iv) (a)

3.

ii)  80°

Step-by-step explanation:

2.

i) 2x+x+3x=180°

x=30°

ii) x+110=180

x=70

iii) x+2x+30°=180

x=50°

iv) 2x+15°+45°+x=180

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3.

ii) 2x+5+25=180°

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x=75°

the measure:  x+5°= 75°+5°=80°

3 0
3 years ago
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