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2 years ago

What is EBC? ASAP please

Mathematics

1 answer:

Brums [2.3K]2 years ago

7 0

We know that if $m\angle ABD=2(m\angle DBC)$ , then $m\angle ABD=\frac{2n}{3}$ and $m\angle DBC=\frac{n}{3}$ .

Since BE bisects $\angle DBC$ , we know that $\angle DBE \cong \angle EBC$ , and thus $\angle EBC=\boxed{\frac{n}{6}}$

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Find the missing side length .

Artyom0805 [142]

Answer:

AC is 45 units

Step-by-step explanation:

Triangle ABC is a dilation of PQR. Triangle ABC is 9 times larger than Triangle PQR

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3 years ago

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Choose the best decimal to represent 53/7

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ANSWER BELOW

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Answer and Step-by-step explanation:

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3 years ago

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The data set represents a month-to-month progression of gasoline prices over the course of several months in an unspecified city

mash [69]

Answer:

The correct option is a.

Step-by-step explanation:

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$y=ax^2+bx+c$ ..... (1)

Using graphing calculator we get

$a=-0.143393\approx -0.143$

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$y=-0.143x^2+0.595x+2.830$

Therefore the correct option is a.

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3 years ago

∆ABC rotates 90° clockwise about point P to form ∆A′B′C′.

OlgaM077 [116]

Assume P(xp,yp), A(xa,ya), etc.
We know that rotation rule of 90<span>° clockwise about the origin is
R_-90(x,y) -> (y,-x)
For example, rotating A about the origin 90</span><span>° clockwise is
(xa,ya) -> (ya, -xa)
or for a point at H(5,2), after rotation, H'(2,-5), etc.

To rotate about P, we need to translate the point to the origin, rotate, then translate back. The rule for translation is
T_(dx,dy) (x,y) -> (x+dx, y+dy)

So with the translation set at the coordinates of P, and combining the rotation with the translations, the complete rule is:
T_(xp,yp) R_(-90) T_(-xp,-yp) (x,y)
-> </span>T_(xp,yp) R_(-90) (x-xp, y-yp)
-> T_(xp,yp) (y-yp, -(x-xp))
-> (y-yp+xp, -x+xp+yp)

Example: rotate point A(7,3) about point P(4,2)
=> x=7, y=3, xp=4, yp=2
=> A'(3-2+4, -7+4+2) => A'(5,-1)

6 0

4 years ago