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Tems11 [23]
3 years ago
6

Find the distance between the points (-6, – 7) and (5. – 7).

Mathematics
2 answers:
kvasek [131]3 years ago
7 0

Answer:

\boxed {\boxed {\sf d= 11}}

Step-by-step explanation:

We are asked to find the distance between 2 points. We will use the distance formula.

d= \sqrt{ (x_2-x_1)^2+(y_2-y_1)^2

In this formula, (x₁ , y₁) and (x₂ , y₂) are the points. We are given the points (-6, -7) and (5, -7). If we match the value and the corresponding variable, we see that:

  • x₁ = -6
  • y₁ = -7
  • x₂ = 5
  • y₂ = -7

Substitute these values into the formula.

d= \sqrt{(5- -6)^2 + (-7--7)^2

Solve inside the parentheses. Remember that two back-to-back negative signs become a plus sign.

  • (5 - - 6) = (5 +6) = 11
  • ( -7 - - 7) = (-7 +7) = 0

d= \sqrt{ (11)^2+(0)^2

Solve the exponents.

  • (11)² = 11 * 11 = 121
  • (0)² = 0*0= 0

d= \sqrt{(121)+(0)

Add.

d= \sqrt{121}

d=11

The distance between (-6, -7) and (5, -7) is <u>11.</u>

QveST [7]3 years ago
5 0

Answer:

11

Step-by-step explanation:

d=√(5-(-6))²+(-7-(-7))²

d=√(11²+0²)

d=11

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Step-by-step explanation:

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A chord of a circle is 66cm long, it is 56 cm from the center of the circle. What is the radius of the circle?
ser-zykov [4K]

Answer:

radius = 65 cm

Step-by-step explanation:

(See image attached for better comprehension)

To find the value of the radius, we just need to draw a triangle, where one side is half of the chord (the distance from the chord to the center creates a point that divides the chord in two equal segments), other side is the distance from the chord to the center, and the hypotenusa will be the radius.

So, using Pythagoras' theorem, we have that:

r^2 = 56^2 + 33^2

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3 years ago
What is the change from -9 to -1?.
jarptica [38.1K]

Answer:

Positive 8

Step-by-step explanation:

Since they're both negative numbers and it went from -9 to -1, you had to have added a positive number to get a lesser negative number. To put it simply, if you were to subtract 8 from 9, you'd get 1.

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What is the vertical component of a 100 pound force applied at 30° above the horizontal?
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Use the figure below to answer the questions.
Archy [21]

Answer:

a. What is the name of the 3D shape?

The name of the 3D shape is Prism

b. What is the formula for total surface area for this shape?

Total surface area:

S=2A_{b}+P_{b}h

c. What is the surface area of the figure?

The surface area of the figure is 144 cm²

Step-by-step explanation:

a. What is the name of the 3D shape?

The 3D shape has two congruent and parallel faces (triangles) and the other faces are parallelograms, then the 3D shape is a prism


b. What is the formula for total surface area for this shape?

Total Surface area:

S=2A_{b}+P_{b}h

where:

Area of the base of the prism: Ab

Perimeter of the base: Pb

Height of the prism: h


c. What is the surface area of the figure?

The base of the prism is a triangle. Then to calculate the area of the base, we must use the formula to calculate the area of a triangle:

A_{b}=\frac{bh}{2}\\ A_{b}=\frac{(4 cm)(3 cm)}{2}\\ A_{b}=\frac{12cm^{2} }{2}\\ A_{b}=6cm^{2}

The perimeter of the base is the perimeter of the triangle, equal to the sum of the sides of the triangle:

P_{b}=4cm+3cm+5cm\\ P_{b}=12cm

h: Height of the prism is the distance between the bases of the prism (the triangle), then h=11 cm

Then, replacing in the formula the known values:

S=2(6 cm^{2})+(12 cm)(11 cm)\\ S=12 cm^{2}+132 cm^{2}\\ S=144 cm^{2}


8 0
3 years ago
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