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3 years ago

Solve the quadratic equation below: 4x^2 -100=0

Mathematics

2 answers:

anzhelika [568]3 years ago

6 0

Answer:

solution given:

4x^2 -100=0

4x²=10²

(2x)²=10²so

2x=±10

x=±10/2

x=5

or x=-5

GrogVix [38]3 years ago

3 0

Answer:

The answer is x=-5

Step-by-step explanation:

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Which expressions are equivalent. Picture Provided. NO LINKS! NEED ANSWER ASAP

DIA [1.3K]

Answer:

B) 3^-5 (1 / 243) and D) 2^5 x 6^-5 (1 / 243)

Step-by-step explanation:

3 to the negative 5th power as a fraction is

1 / 243.

2 to the power of 5 multiplied by 6 to the power of negative 5 also equals 1 / 243.

Both expressions are equivalent to 2^5 / 6^5 because they equal the same thing (1 / 243).

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3 years ago

Just wondering what 4r x 3f is? If I could get a reply ASAP that would be nice. I think it's 12rf?

Korolek [52]

Answer:

12rf

Step-by-step explanation:

4 times 3 is 12 and r times f just becomes rf so you are correct.

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4 years ago

A helicopter flying 3590 feet above ground spots the top of a 150-foot y'all cell phone tower at an angle of depression of 77° h

erik [133]

Answer:

794.19 feet.

Step-by-step explanation:

Please find the attachment.

Let x be the distance helicopter needs to fly to be directly over the tower.

We have been given that a helicopter flying 3590 feet above ground spots the top of a 150-foot y'all cell phone tower at an angle of depression of 77°.

We can see from our attachment that helicopter, tower and angle of depression forms a right triangle.

As height of tower is 150 feet, so the vertical distance between helicopter and tower will be $3590-150=3440$ feet.

We cab see from our attachment that the side with length 3590-150 feet is opposite and side x is adjacent side to 77 degree angle.

Since we know that tangent relates the opposite side of a right triangle to its adjacent side, so we will use tangent to find the length of x.

$\text{Tan}=\frac{\text{Opposite}}{\text{Adjacent}}$

Upon substituting our given values in above formula we will get,

$\text{Tan}(77^o)=\frac{3590-150}{x}$

$\text{Tan}(77^o)=\frac{3440}{x}$

$x=\frac{3440}{\text{Tan}(77^o)}$

$x=\frac{3440}{4.331475874284}$

$x=794.1865\approx 794.19$

Therefore, the helicopter must fly approximately 794.19 feet to be directly over the tower.

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3 years ago

If a figure is a square then it is a regular quadrilateal. is this true or false.explain?

Rudik [331]

True. A regular quadrilateral has 4 equal sides.

4 0

3 years ago

2. Theorem 2-10 states that through a point not on a line, there

erastovalidia [21]

When two or more lines are parallel to each other, this implies that they do not meet even extending them till infinity. So the statement justifies the construction because only one line through point C can be constructed to be parallel to AB.

When a parallel line is constructed through a point to a given line, this is the only parallel line that can be drawn to the given line. Parallel lines are lines that will not meet at any point. Thus, only one parallel line can be constructed through a point not to a given line.

The construction of a line through C that is parallel to line AB is justified by the given statement in the theorem since this is the only parallel line to line AB that can be drawn through the point C. Any other line through C would intersect or meet line AB at a point when extended, thus would not be parallel to the given line.

Visit: brainly.com/question/17967521

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3 years ago