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ollegr [7]
3 years ago
10

A radio tower is located on a coordinate system measured in miles. The range of a signal in a particular direction is modeled by

a quadratic function where the boundary of the signal starts at the vertex at (4, 2). It passes through the point (5, 4). A linear road connects points (–3, 7) and (8, 2). Which system of equations can be used to determine whether the road intersects the boundary of the tower’s signal?
Mathematics
1 answer:
WITCHER [35]3 years ago
8 0

im sorry i dont know the answer

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triangle ABC is similar to Triangle d e f if the perimeter of a triangle ABC is 24 in what is the perimeter of triangle d e f a
vagabundo [1.1K]
9/6 = 1.5
24/1.5 = 16
triangle DEF has a primeter of 16 inches
3 0
3 years ago
The picture shows a circular clock face.
marysya [2.9K]

Answer:

[C] 25π square inches

Step-by-step explanation:

<u><em>Given that:</em></u>

<em>the long hand of the clock is about 5 inches long.</em>

<u><em>To Find:</em></u>

<em>What is the approximate area of the clock face?</em>

<u><em>Solve:</em></u>

<em>Formula - </em><em>A =πr²</em>

<em>Note that;</em>

<em>π = 3.14 (about)</em>

<em>Radius - 5 inches</em>

<em>A =πr²</em>

<em>A = 3.14(5)²</em>

<em>A = 3.14(25)</em>

<em>A = 78.5</em>

<em>Now let see the answer choices:</em>

<em>A.  5π square inches                     ≈   5(3.14) = 15.7</em>

<em>B. 10 π square inches                    ≈  10(3.14) = 31.4</em>

<em>C. 25 π square inches                    ≈  25(3.14) = 78.5</em>

<em>D. 100 π square inches                    ≈ 100(3.14) = 314</em>

<em />

<em>Hence, the answer is [C] 25 π square inches </em>

<em />

<u><em>Kavinsky~</em></u>

6 0
1 year ago
Read 2 more answers
Find the inverse of the matrix , if it exists
Montano1993 [528]

Answer:

So, option A is correct.

Step-by-step explanation:

To find the inverse of the matrix, the formula is:

A^{-1} = 1/|A| * Adj A

Inverse of the matrix exists if |A| does not equal to 0

|A| = 7 * 9 -( -2 * -10)

|A| = 63 - 20

|A| = 43

AS |A| ≠ 0

so inverse exist.

now finding Adj A

Adj A = \left[\begin{array}{cc}9&2\\10&7\end{array}\right]

\left[\begin{array}{cc}9/43&2/43\\10/43&7/43\end{array}\right]

So, option A is correct.

8 0
3 years ago
Functions f(x) and g(x) are defined below. Determine where f(x) = g(x) by graphing.
Reika [66]

Answer:

Option D. x = 4

Step-by-step explanation:

we have

f(x)=\frac{1}{x-3}+1

g(x)=2\sqrt{x-3}

we know that

The solution of the system

f(x)=g(x)

is the x-coordinate of the intersection point both graphs

using a graphing tool

The intersection point is (4,2)

see the attached figure

therefore

The solution is x=4

8 0
3 years ago
Trigonometry: "Find x, to the nearest tenth of a centimetre."
Nimfa-mama [501]

Answer:

The rule to be use is

SOC CAH TOA

But in this we use d CAH cox there's adjacent and hypothenos here

Step-by-step explanation:

The first triangle

hyp²=opp.²+adj²

62²=x²+3.5²

x²=62²-3.5²

x²=3844-12.25

x²=3831.75

6 0
1 year ago
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