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3 years ago

Find the area of a triangle with base = 12 inches and height = 14 inches

Mathematics

2 answers:

bogdanovich [222]3 years ago

7 0

Answer:

Step-by-step explanation:

base(b) = 12 inches

height (h)= 14 inches

Area of a triangle

= 1/2 * b * h

=1/2 * 12 * 14

= 84 inches²

kifflom [539]3 years ago

4 0

Answer:

Step-by-step explanation:

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Simplyfy (−9a − 20c) − (−15a + 3c) − (−22a − 7c)?

Maksim231197 [3]

(-9a - 20c) - (-15a + 3c) - (-22a - 7c)

= -9a - 20c + 15a - 3c + 22a + 7c

= (-9a + 15a + 22a) + (-20c - 3c + 7c)

= 28a - 16c

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4 years ago

From five number summary 7,13,17,21,43

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Answer:

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Step-by-step explanation:

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3 years ago

Which point lies on a circle that is centered at A(-3, 2) and passes through B(1, 3)?

My name is Ann [436]

The equation of a circle:
$(x-h)^2+(y-k)^2=r^2$
(h,k) - the coordinates of the center
r - the radius

$\hbox{the center: } A(-3,2) \\
h=-3 \\ k=2 \\ \\
\hbox{the equation:} \\
(x+3)^2+(y-2)^2=r^2 \\ \\
\hbox{the circle passes through B(1,3)} \\
x=1 \\ y=3 \\ \Downarrow \\
(1+3)^2+(3-2)^2=r^2 \\
4^2+1^2=r^2 \\
16+1=r^2 \\
17=r^2 \\ \\
\hbox{the equation is:} \\
(x+3)^2+(y-2)^2=17$

Plug the coordinates of the points into the equation and check:
$C(-1,-2) \\
(-1+3)^2+(-2-2)^2=17 \\
2^2+(-4)^2=17 \\
4+16=17 \\
20=17 \\
not \ true \\ \\
D(-6,3) \\
(-6+3)^2+(3-2)^2=17 \\
(-3)^2+1^2=17 \\
9+1=17 \\
10=17 \\
not \ true$

$E(-3,-3) \\
(-3+3)^2+(-3-2)^2=17 \\
0^2+(-5)^2=17 \\
25=17 \\
not \ true \\ \\
F(-2,6) \\
(-2+3)^2+(6-2)^2=17 \\
1^2+4^2=17 \\
1+16=17 \\
17=17 \\
true$

The answer is F(-2,6).

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3 years ago

1658.013 to the nearest hundred

tiny-mole [99]

The answer would be 1700.000

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Find the circumference of the circle

Brilliant_brown [7]

The circumference is 72.22. The formula for circumference is the diameter times pi, which in this case multiplies to about 72.22

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3 years ago

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