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stich3 [128]
3 years ago
8

What is the solution for xsquared= 64

Mathematics
1 answer:
nordsb [41]3 years ago
8 0
Square root both sides and you get:
X=8
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Triangle ABC has vertices at A(-4, -2), B(1, 7) and C(8, -2)
Arada [10]

Answer:

a). Area = 54 square units

b). Perimeter = 33.7 units

Step-by-step explanation:

Vertices of the triangle ABC are A(-4, -2), B(1, 7) and C(8, -2).

(a). Area of the triangle ABC = \frac{1}{2}[x_{1}(y_{2}-y_{3})+x_{2}(y_{3}-y_{1})+x_{3}(y_{1}-y_{2})] (Absolute value)

By substituting the values from the given vertices,

Area = \frac{1}{2}[(-4)(7+2)+(1)(-2+2)+8(-2-7)]

        = \frac{1}{2}[-36+0-72]

        = \frac{1}{2}(-108)

        = (-54) unit²

Therefore, absolute value of the area = 54 square units

(b). Distance between two vertices (a, b) and (c, d)

        d = \sqrt{(a-c)^{2}+(b-d)^2}

     AB = \sqrt{(-4-1)^{2}+(-2-7)^{2}}

           = \sqrt{106}

           = 10.295 units

     BC = \sqrt{(1-8)^2+(7+2)^2}

           = \sqrt{130}

           = 11.402 units

     AC = \sqrt{(-4-8)^2+(-2+2)^2}

           = 12 units

     Perimeter of the triangle = AB + BC + AC = 10.295 + 11.402 + 12

                                                                          = 33.697

                                                                          ≈ 33.7 units

7 0
3 years ago
The value of x - y is
Trava [24]

Answer:

Yes, in a Cartesian Coordinate system each point is given by two numbers. If the question is "where" the function has a max or min value, that's "x", the first number in pair. If the question is "what" is that max or min function value, thats "y", the second number in the pair

7 0
3 years ago
Which of the following is the missing side length that completes Pythagorean triple below
nata0808 [166]
Pythagorus Theorm
a sqr + b sqr = c sqr
25 sqr + 7 sqr = c sqr
625 + 49 = c sqr
625 + 49 = 674

c = sqr root of 674
c = 25.96 (rounded to 2dp)
4 0
3 years ago
Read 2 more answers
It takes Santa a total distance of 1800 miles to cover a portion of his
alexandr402 [8]

Answer:

the answer is 600mph

Step-by-step explanation:

because 1800miles/3 hours=600mph

8 0
2 years ago
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A circular running track is 1/4 mile long. Elena runs on this track completing each lap in 1/4 of an hour. What is Elena's runni
daser333 [38]

Answer:

She is going 1mph

Step-by-step explanation:

each lap is 1/4 of a mile and 1/4 of an hour so 4 laps = 1 mile and in 1 hour

7 0
3 years ago
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