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TiliK225 [7]
3 years ago
6

Please answer quickly!!!!!

Mathematics
2 answers:
ale4655 [162]3 years ago
6 0

Answer:

246meter square

Step-by-step explanation:

Area of a trapezium is calculated using the formula

Area = 1/2 ( A+B) x height

where A is the one of the horizontal sides (18m) and B is the other horizontal (23m) side and height is vertical side (12m)

Area = 1/2 (18m + 23m) x 12m

Area = 1/2 (41m) x 12m

Area = (1 x 41 x 12) / 2

Area = 492/2 = 246 meter square

Sindrei [870]3 years ago
5 0

The answer would be "B", 246 m2.

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vova2212 [387]

Answer:

a. y = -2x + 7

Step-by-step explanation:

First, find the slope by plugging the points into the slope formula, \frac{-7+5}{7-6}, which equals -2. Then use the slope and the point (7,-7) to make an equation in slope-point form. y+7=-2(x-7), finally solve for y to get y=-2x+7.

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Line segment ab has endpoints a(9, 3) and b(2, 6). find the coordinates of the point that divides the line segment directed from
Dominik [7]
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Adding them to the coordinates of a,
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7 0
3 years ago
Orthogonalizing vectors. Suppose that a and b are any n-vectors. Show that we can always find a scalar γ so that (a − γb) ⊥ b, a
jeka57 [31]

Answer:

\\ \gamma= \frac{a\cdot b}{b\cdot b}

Step-by-step explanation:

The question to be solved is the following :

Suppose that a and b are any n-vectors. Show that we can always find a scalar γ so that (a − γb) ⊥ b, and that γ is unique if b \neq 0. Recall that given two vectors a,b  a⊥ b if and only if a\cdot b =0 where \cdot is the dot product defined in \mathbb{R}^n. Suposse that b\neq 0. We want to find γ such that (a-\gamma b)\cdot b=0. Given that the dot product can be distributed and that it is linear, the following equation is obtained

(a-\gamma b)\cdot b = 0 = a\cdot b - (\gamma b)\cdot b= a\cdot b - \gamma b\cdot b

Recall that a\cdot b, b\cdot b are both real numbers, so by solving the value of γ, we get that

\gamma= \frac{a\cdot b}{b\cdot b}

By construction, this γ is unique if b\neq 0, since if there was a \gamma_2 such that (a-\gamma_2b)\cdot b = 0, then

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6 0
3 years ago
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miss Akunina [59]

Answer:

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