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Amanda [17]
3 years ago
9

X>0 and 2x^2+3x-2=0 what is the value of x

Mathematics
1 answer:
vladimir2022 [97]3 years ago
3 0

Step-by-step explanation:

2x²+3x-2=0

(2x-1)(x+2)

x+2=0

x=-2 (no, because x must be >0)

2x-1=0

2x=1

x=½ (yes, because x>0)

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What is m <br> angle 1?<br> 35°<br> 40°<br> 55°<br> 70°
gizmo_the_mogwai [7]

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Answer:

  (b)  40°

Step-by-step explanation:

Angle x and the one marked 70° are alternate interior angles, so are congruent. The sum of the two base angles of the isosceles triangle is ...

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So, the remaining angle 1 in the triangle is ...

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5 0
2 years ago
Let f(x) = x2 – 4, x &lt; 0. What is f-1?
Galina-37 [17]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
An oven heating element turns on when the internal temperature falls to 20 degrees below the set temperature and turns off when
son4ous [18]

Answer:

The range of the oven is 385\leq T\leq 410

Step-by-step explanation:

Consider the provided information.

The internal temperature falls to 20 degrees below the set temperature and turns off when the temperature reaches 5 degrees above the set temperature.

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The internal temperature falls to 20 degrees, therefore the lowest set can be:

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This can be written as: 385\leq T\leq 410

Hence, the range of the oven is 385\leq T\leq 410

4 0
3 years ago
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One equation that represents this situation is f/4 = 22.

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7 0
3 years ago
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