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lukranit [14]
2 years ago
13

Plz help....................

Mathematics
2 answers:
Dominik [7]2 years ago
8 0

Answer:

I think it is 10x +40

Step-by-step explanation:

cluponka [151]2 years ago
5 0

Answer:

C. 10x - 40

Step-by-step explanation:

5 times 2x is 10x. 5 times -8 is -40. Put them together to get 10x - 40.

Hope it helps!

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What is the area of the trapezoid?
EastWind [94]

Answer:

37.5 square units

Step-by-step explanation:

A=a+b/2h => 5 + 10 / 2 x 5

7 0
2 years ago
Read 2 more answers
Three cell phones towers can be modeled by the points X(6,0), Y(8,4), and Z(3,9). Determine the location of another cell phone t
Marat540 [252]

Answer:

The location of the new cell phone tower is (h,k) = (3,4), and the equation of the circle is x^{2}+y^{2} -6\cdot x - 8\cdot y = 0.

Step-by-step explanation:

The location of the cell phone tower coincides with the location of a circunference passing through the three cell phone towers. By Analytical Geometry, the equation of the circle is represented by the following general formula:

x^{2} + y^{2}+A\cdot x + B\cdot y +C = 0 (1)

Where:

x - Independent variable.

y - Dependent variable.

A, B, C - Circunference constants.

Given the number of variable, we need the location of three distinct points:

(x_{1},y_{1}) = (6,0)

36 +6\cdot A + C = 0

(x_{2},y_{2}) = (8,4)

80 + 8\cdot A + 4\cdot B + C = 0

(x_{3},y_{3}) = (3,9)

90 + 3\cdot A + 9\cdot B + C = 0

Then, we have the following system of linear equations:

6\cdot A + C = -36 (2)

8\cdot A +4\cdot B + C = -80 (3)

3\cdot A + 9\cdot B + C = -90 (4)

The solution of this system is:

A = -6, B = -8, C = 0

By comparing the general form with the standard form of the equation of the circunference is:

A = -2\cdot h (5)

B = -2\cdot k (6)

C = h^{2}+k^{2}-r^{2} (7)

Where:

h, k - Coordinates of the center of the circle.

r - Radius of the circle.

If we know that A = -6, B = -8 and C = 0, then coordinates of the center of the circle and its radius are, respectively:

h = -\frac{A}{2}

k = -\frac{B}{2}

r = \sqrt{h^{2}+k^{2}-C}

h = 3, k = 4, r = 5

The location of the new cell phone tower is (h,k) = (3,4), and the equation of the circle is x^{2}+y^{2} -6\cdot x - 8\cdot y = 0.

3 0
2 years ago
What is the least common multiple of 441 and 1008
topjm [15]
7056. 1008 x 7 = 7056. 7056 / 441 = 16
4 0
3 years ago
The Girl Scouts are selling cookies. They have made $437 so far. They need to sell more than $1000 to go on a scout retreat. Wha
beks73 [17]

Answer:they still need to make 563 or more. They still need to make more than 563

Step-by-step explanation:

6 0
3 years ago
Help quick please with explain
Paul [167]

Answer:

20= v+9+( -16 )

20= v-( 7 )

27= v

Step-by-step explanation:

Adding a negative is the sane as subtracting. Add like terms. Add 7 to both sides. 27= v

8 0
2 years ago
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