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ludmilkaskok [199]

2 years ago

7

Find the angles marked with the letters.

1 answer:

OLga [1]2 years ago

5 0

Answer:

bigger b is 55°, the other b is 35°, c is 29°

Step-by-step explanation:

angles opposite each other on a point are the same so the bigger b is 55

55+90=145

180-145=35 so b is 35

alternate angles are the same so 35+116=151

180-151=29 so c=29

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(cos2A−cos2B)2+(sin2A+sin2B)2=4sin2(A+B)

lbvjy [14]

Answer:

${( \cos2A - \cos2B) }^{2} + {( \sin2A + \sin2 B }^{2}\\ = ( - 2\cos2A \cos2B + { \cos {}^{2} 2A } + \cos {}^{2} 2B) + (2 \sin2A \sin2B + \sin {}^{2} 2A + \sin {}^{2} 2B)\\ \\ { = - 2( \sin2A + \sin 2 B - \cos2 A - \cos2B) }\\ \\ { = - 2( - 4 \sin( A + B) \cos(A + B) } \\ \\ = {\tt{double \: angle \: of \: sine}}\\ \\ { = 2 \times 2(2 \sin (A + B) \cos(A + B)) }\\ \\ { = 4 \sin2(A + B)}$

8 0

2 years ago

Can someone help me do 13, 14 and 15 thank u

sweet [91]

Answer:

Step-by-step explanation:

8 0

2 years ago

Please help me . please and thank you !!.

Vesna [10]

18) Value of b is : $b\geq 8$

Option A is correct.

19) Option C is correct.

Step-by-step explanation:

18) We need to find the value of b.

The given equation is:

$12b-46\geq 50$

Solving to find the value of b:

$12b-46\geq 50\\12b\geq 50+46\\12b\geq 96\\b\geq \frac{96}{12}\\b\geq 8$

So value of b is : $b\geq 8$

Option A is correct.

19) We need to find the correct graph of the equation:

$4y-2$

Solving:

$4y-2$

The values of y will be less than three. As y < 3 so, the circle on y is not filled.

So. Option C is correct.

Keywords: Solving Inequalities

Learn more about Solving Inequalities at:

#learnwithBrainly

7 0

3 years ago

kim owes $870.00 on her mastercard account. She returns two items costing $35.90 and $150.00 and receive credits for these on th

julsineya [31]

Answer:

She has 499.3$

Step-by-step explanation:

870+35.90+35.90+150-82.50-10-500

7 0

3 years ago

Dina was running for two hours at a speed of 6 miles per hour. How far did she run?

lys-0071 [83]

Answer:

12 miles

Step-by-step explanation:

6 times 2 = 12

3 0

3 years ago

Read 2 more answers