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4 years ago

Help? I know number 3 is yes but I don’t remember why.

Mathematics

1 answer:

elena-s [515]4 years ago

4 0

3. Yes, the shapes are congruent, because all the corresponding sides are the same lengths.

The figure that isn't labeled with any letters was reflected across the X-axis at X =1

JKL was rotated 180 degrees, then shifted 2 units to the left.

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3 years ago

Bicycle rental on the sea well at the beach cost a mandatory minimum of $5 for the first hour and then $4 for each additional ho

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Answer:

12.8x + 20

Step-by-step explanation:

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3 years ago

Consider a Triangle ABC like the one below. Suppose that C = 98, A = 74, and b = 11 (figure is not drawn to scale.) solve the tr

Degger [83]

Answer:

$A=73.8\°$

$B=8.2\°$

$c=76.3\ units$

Step-by-step explanation:

step 1

Find the measure of side c

Applying the law of cosines

$c^{2}= a^{2}+b^{2}-2(a)(b)cos(C)$

substitute the given values

$c^{2}= 74^{2}+11^{2}-2(74)(11)cos(98\°)$

$c^{2}=5,823.5738$

$c=76.3\ units$

step 2

Find the measure of angle A

Applying the law of sine

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute the given values

$\frac{74}{sin(A)}=\frac{76.3}{sin(98\°)}$

$sin(A)=(74)sin(98\°)/76.3$

$A=arcsin((74)sin(98\°)/76.3)$

$A=73.8\°$

step 3

Find the measure of angle B

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

$A+B+C=180\°$

substitute the given values

$73.8\°+B+98\°=180\°$

$171.8\°+B=180\°$

$B=180\°-171.8\°=8.2\°$

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3 years ago

ABCD is a quadrilateral

Whitepunk [10]

Answer: a. x = 45 b. No

Explanation: a. 360-90=270
3x+2x+x= 6x and 6x=270 so divide both sides by 6x and x = 45

b. As you can see from the image below None of the lines would be parallel.

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2 years ago

Which linear inequality represents the graph below?

muminat

Answer:

The answer would be B

Step-by-step explanation:

The reason that we know this is because the line is falling and because it is a solid line then we know that it is ≥ and not just >. the solid line already gets rid of C and D. A is a positive number which would cause the line to go the opposite direction. Therefore B is your only answer left.

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2 years ago