All categories

3 years ago

Which line is the line of reflection?A. aB. bC. cD. d

Mathematics

2 answers:

Leto [7]3 years ago

6 0

The line of reflection is b

You can see it much easier if take away all the clutter. Redraw the diagram and take way a d and especially c.

You should be left with only line b and the two triangles. You can see it much easier if you do that. Then just look at the parallel lines of the triangles. They are right across from each other.

nadezda [96]3 years ago

4 0

Answer:

The correct answer is B

Step-by-step explanation:

Because you look at which line does both shapes have the same distance from!

I hope this helps!

Plz mark Brainliest trying to rank up!

Have a nice day!

You might be interested in

HELP PLS ASAP 50 POINTS HELP ILL MARK BRAINLIEST

kati45 [8]

Answer:

1/2jdjdjjdjdjdhdhdhdhdhhdhdhdhdhd

5 0

3 years ago

Find all solutions of the equation: 2cos^2x-cosx=1

Art [367]

If you're using the app, try seeing this answer through your browser: brainly.com/question/3166243

——————————

Solve the trigonometric equation:

$\mathsf{2\,cos^2\,x-cos\,x=1}\\\\ \mathsf{2\,cos^2\,x-cos\,x-1=0}$

Make a substitution:

$\mathsf{cos\,x=t\qquad (-1\le t\le 1)}$

and the equation becomes

$\mathsf{2t^2-t-1=0}$

Rewrite conveniently – t as + t – 2t, and then factor the left-hand side by grouping:

$\mathsf{2t^2+t-2t-1=0}\\\\ \mathsf{t\cdot (2t+1)-1\cdot (2t+1)=0}$

Factor out 2t + 1:

$\mathsf{(2t+1)\cdot (t-1)=0}\\\\ \begin{array}{rcl} \mathsf{2t+1=0}&~\textsf{ or }~&\mathsf{t-1=0}\\\\ \mathsf{2t=1}&~\textsf{ or }~&\mathsf{t=1}\\\\ \mathsf{t=\dfrac{\,1\,}{2}}&~\textsf{ or }~&\mathsf{t=1} \end{array}$

Substitute back for t = cos x:

$\begin{array}{rcl}\mathsf{cos\,x=\dfrac{\,1\,}{2}}&~\textsf{ or }~&\mathsf{cos\,x=1}\\\\ \mathsf{cos\,x=cos\,60^\circ}&~\textsf{ or }~&\mathsf{cos\,x=cos\,0} \end{array}$

Therefore,

$\begin{array}{rcl} \mathsf{x=\pm\,60^\circ+k\cdot 360^\circ}&~\textsf{ or }~&\mathsf{cos\,x=0+k\cdot 360^\circ} \end{array}$

where k is an integer.

Solution set:

$\mathsf{S=\left\{x\in\mathbb{R}:~~x=-\,60^\circ+k\cdot 360^\circ~~or~~x=60^\circ+k\cdot 360^\circ~~or~~x=k\cdot 360^\circ,~~k\in\mathbb{Z}\right\}}$

I hope this helps. =)

3 0

3 years ago

MATH GIVING OUT BRAINLY TO CORRECT ANSWER

dezoksy [38]

Answer:

Step-by-step explanation:

Fractions cant be integers

4 0

3 years ago

Read 2 more answers

Alana has 100 mL of water in her water bottle. She needs to share it with 3 other students so that all 4 of them have the same a

elena-14-01-66 [18.8K]

Answer:

each person (including Alana) gets 25mL of water

Step-by-step explanation:

since there is 4 ppl, and 100mL of water, you divide 100/4. Therefore, each person gets 25mL of water:)

6 0

4 years ago

Read 2 more answers

A tree farming company is testing how many items customers purchase during their visits. Based on many results, the (partial) pr

kkurt [141]

Answer:

X probability = 0.02

Cumulative frequency at x ( 6 ) = 1

Step-by-step explanation:

X P ( X ) Cf ( X )

1 0.58 0.58

2 0.18 0.58 + 0.18 = 0.76

3 0.10 0.76 + 0.10 = 0.86

4 0.07 0.86 + 0.07 = 0.93

5 0.05 0.93 + 0.05 = 0.98

6 0.02 0.98 + 0.02 = 1

4 0

3 years ago