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Oxana [17]
4 years ago
6

Solving equation by multiplying

Mathematics
1 answer:
jeka944 years ago
6 0
Do you have a picture of the problem
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A hubcap has a radius of 12 centimeters. What is the area of the hubcap? Round your answer to the nearest hundredth. Use 3.14 fo
lana66690 [7]

Answer:

The area of hub cap is 452.16 square centimeters.                                    

Step-by-step explanation:

We are given the following in the question:

Radius of hubcap = 12 cm

A hubcap is of the shape of circle.

Area of hubcap = Area of circle

Area of hubcap =

\pi r^2

where r is the radius of the hubcap.

Putting the values, we get,

\pi r^2\\= 3.14\times (12)^2\\= 452.16 \text{ square centimeter}

Thus, the area of hub cap is 452.16 square centimeters.

8 0
4 years ago
find the specified lengths and measures. Given: triangle ABC is congruent with triangle DEF. Find: BC, BA, and angle D
SIZIF [17.4K]

Answer:

BC=5 BA=11 D=178

Step-by-step explanation:

I might not be completely right but I think so.

5 0
3 years ago
The vertices of an isosceles triangle are A (-10, 1), B (-6, 3) and C (-4, 7).
adelina 88 [10]

check the picture below.


so, those are the points, now, the line of symmetry, the red one, is the line that will cut the vertex is half and will be perpendicular to the opposite side.


now, the slope of the black line we can just get it off the grid, notice the rise and run, rise/run = 6/6 = 1.


now a perpendicular line to that one will have a negative reciprocal slope, thus


\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{1\implies \cfrac{1}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{1}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{1}\implies -1}}


so the slope of that perpendicular line will be -1, so we're really looking for the equation of a line whose slope is -1 and runs through -6,3.


\bf (\stackrel{x_1}{-6}~,~\stackrel{y_1}{3})\qquad \qquad \qquad  slope =  m\implies -1 \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-3=-1[x-(-6)] \\\\\\ y-3=-1(x+6)\implies y-3=-x-6\implies y=-x-3

5 0
3 years ago
Factor. x^2−10x−11
lys-0071 [83]
Xjsksnsosnsosnsosnd. Didnrjebs didneisneiw sjs did god Factor. x^2−10x−11

(x+11)(x−1)

(x+11)(x+1)

(x−11)(x+1)

(x−11)(x−1)
8 0
3 years ago
HELLLPPPP FASTTTTT !!!!!!! When working with scientific Notation What does a negative exponent let you know about the size of th
Nimfa-mama [501]

Answer:

A negative exponent means that the number will be a decimal.

so 4 X 10^-9   (-9 being the exponent of 10)

the answer to this equation would be 0.000000004 because the decimal moves 9 times to the left

8 0
3 years ago
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