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3 years ago

Help!!!

Mathematics

1 answer:

Mrrafil [7]3 years ago

4 0

Answer:

∠ ADC = 53°

Step-by-step explanation:

Note the angle between the radius and the tangent is 90°

The sum of the angles in quadrilateral AOCB = 360°, thus

∠ AOC = 360° - (90 + 90 + 74 )° = 360° - 254° = 106°

∠ AOC is twice the angle on the circumference ∠ ADC, thus

∠ ADC = 106° ÷ 2 = 53°

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Where is the circumcenter of any given triangle?

Salsk061 [2.6K]

The correct answer is:

B) the point of concurrency of the perpendicular bisectors of the sides of the triangle

Explanation:

The definition of circumcenter is "the point of intersection of the perpendicular bisectors of a triangle."

To construct the circumcenter, we first construct the perpendicular bisector of each side of the triangle. Once we have these three lines, we find their point of intersection; this is the circumcenter.

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3 years ago

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What is the expression that means the same as 7 less than the square of a number? A. 7-2x B. 7-2× C. 7-x2 D. x2-7

damaskus [11]

Answer d is correct!!!!!

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3 years ago

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Please help me with this, I will give brainliest.

defon

Answer:

5.9 or 5.85 unrounded

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2 years ago

6 ft 8 ft 452.16 ft 150.72 ft 48 ft 904.32 ft

Shtirlitz [24]

Answer:

The answer is 904.778 $ft^3$ .

Step-by-step explanation:

-You first need the formula for the volume of a cylinder:

$V = \pi r^2h$

-Take the radius and the height of the cylinder for the formula:

$V = \pi 6^2 8$

-Then, you solve the formula:

$V = \pi 6^2 8$

$V = \pi \times 6^2 \times 8$

$V = \pi \times 36 \times 8$

$V = \pi \times 288$

$V = 288\pi \approx 904.778$

So, the answer is 904.778 $ft^3$ .

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3 years ago

Compute the value of the discriminant and give the number of real solutions of the quadratic equation. -9x to the second power-6

Step2247 [10]

Answer:
discriminant=0
Number of real solutions=1

Step-by-step explanation:

Given the equation:
-9x^2-6x-1=0
Let a: coefficient of x^2
Let b: coefficient of x
Let c: constant
a=-9
b=-6
c=-1
The formula of the discriminant is given by:
discriminant= b^2 - 4ac
discriminant= (-6)^2 - 4(-9)(-1)
= 36 - 36 = 0
We know that:
If discriminant<0 then the equation has no real root
If discriminant=0 the equation has one real root
If discriminant>0 the equation has 2 real roots

Here we got discriminant=0 so the quadratic equation has 1 real root.

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2 years ago