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3 years ago

Evaluate 11/3-2/8 A 1,7/12 B 1,5/8 C 7/12 D1,5/6

Mathematics

1 answer:

Mars2501 [29]3 years ago

6 0

Answer:

Step-by-step explanation:

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Find the area of the triangle whose vertices are (2, 3); (-1, 0); (2, -4)...

Neko [114]

Answer:

Area = 14.5

Step-by-step explanation:

Let's label the given coordinates A, B, C;

Thus;

A = (2, 3)

B = (-1, 0)

C = (2, -4)

From the coordinate geometry formula, the formula for area of a triangle with 3 vertices is;

Area = [Ax(By - Cy) + Bx(Cy - Ay) + Cx(Ay - By)]/2

Area = [2(0 - (-4)) + (-1)(-4 - 3) + 2(3 - (-4))]/2

Area = 29/2

Area = 14.5

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3 years ago

Charlie wants to know the length of Charlie wants to know the length of a tunnel built through a mountain. To do so, he makes th

nekit [7.7K]

Answer:To do so, she makes the measurements shown in the figure below.

Step-by-step explanation:

3 0

2 years ago

The radius of one circle is three the time radius of another circle. The sum of their areas is 12pi. Find the radius of each cir

zlopas [31]

$\displaystyle\\
\begin{cases}
R_1 = 3R_2\\
\pi R_1^2 +\pi R_2^2=12\pi ~~~\Big|~~:\pi 
\end{cases} \\ \\ 
\begin{cases} 
R_1 = 3R_2\\
R_1^2 + R_2^2=12 
\end{cases} \\ \\ 
(3R_2)^2+ R_2^2=12 \\ \\ 
9R_2^2 + R_2^2=12 \\ \\ 
10R_2^2=12\\\\
R_2^2 = \frac{12}{10} = \frac{6}{5} \\ \\ 
R_2 = \boxed{\sqrt{\frac{6}{5}} } \\ \\ 
R_1 = \boxed{3\sqrt{\frac{6}{5}} }$

7 0

3 years ago

Someone help me

Aneli [31]

Answer:

see the explanation

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=\pi D$

where

D is the diameter

In this problem we have

$C=2.88\ in$

$\pi=3$

substitute and solve for D

$2.88=(3)D$

$D=2.88/3$

$D=0.96\ in$

we know that

The length of the row of quarters is equal to multiply the diameter of the quarter by the number of quarters in the row

For 4 quarters in the row, the length is equal to --> $0.96(3)=3.84\ in$

For 6 quarters in the row, the length is equal to --> $0.96(6)=5.76\ in$

For 12 quarters in the row, the length is equal to -> $0.96(12)=11.52\ in$

6 0

3 years ago

Brainliest if it its right

Anika [276]

Answer:

A = <u>40</u> $mm^{2}$

Step-by-step explanation:

The equation for finding the area of a trapezoid is $A= \frac{a + b}{2}h$ .

In this equation, a=4, b=6, h=8.

$A = \frac{4 + 6}{2}8$ .

4+6=10
10/2=5
5x8=40

Hope this helps!

8 0

2 years ago

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