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CaHeK987 [17]
3 years ago
9

Write the expression as the sin or cosine of an angle. sin pi/3 cos pi/7 - sin pi/7 cos pi/3

Mathematics
1 answer:
postnew [5]3 years ago
5 0

sin(4π21). Explanation: Notice that this fits the form of the sine subtraction formula: sin(A−B)=sin(A)cos(B)−cos(A)sin(B).

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The widths of two similar rectangles are 21 ft and 18 ft. What is the ratio of the perimeters? Of the areas?
Alenkinab [10]

Answer:

7:6 and 49:36

Step-by-step explanation:

5 0
3 years ago
Express 33 1/2% as fraction<br><br>​
zzz [600]
First you have to multiply 2x33 which is 66 then you have to add 1 which is 67 so the answer would be 67/2 I don’t know about the percent sign though
8 0
3 years ago
A rectangular prism has a length of 4 cm and a width of 5 cm.The volume of the prism is 200 cu cm .The height is unknown.Explain
Kaylis [27]

Answer:

Well just gonna explain kn the bottom but the answer is 10

Step-by-step explanation:

what you would have to do first is to jusy do 5x4 which is 20 then since you wanna find the volume yoi qould juat do 200 divide by 20 which is 10

3 0
4 years ago
What is the TOTAL area of polygon<br><br><br> The total area is__________square centimeters.
Degger [83]

Answer:

66

Step-by-step explanation:

Find the area of the rectangle, then add up the area of the triangle.

The area of the rectangle

= 5 × 12

= 60 cm²

The <u>base</u> of the triangle

= 12 - 9

= 3 cm

The <u>height</u> of the triangle

= 9 - 5

= 4 cm

The area of the triangle

= (3 × 4) ÷ 2

= 6 cm²

The total area of the figure

= 60 + 6

= <u>66 cm²</u>

6 0
3 years ago
HELP PLEASE :) <br> option for A= <br> Andrews class and 6<br> I=<br> Lauren's class and 6
Natali [406]

Answer:

a = l +6

Step-by-step explanation:

andrew = lauren + 6

7 0
3 years ago
Read 2 more answers
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