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Lady_Fox [76]
3 years ago
10

Evaluate the following expression. cos870° - sin780º =

Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Answer:

-sqrt(3)

Step-by-step explanation:

Solve each individually

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Greta has watched 30 minutes of a movie. This is 20%<br>of the entire movie. How long is the movie?​
german
The answer is 180 minutes. because you multiply 30 times 0.20 and you get 6. Then you multiply 6 times 30 and get 180 minutes. And 180 minutes in hours is 3 hours.
8 0
3 years ago
• Manuela has two boxes. The larger of the two boxes has dimensions of 15 cm
valkas [14]

Answer:

6500 cm^3.

Step-by-step explanation:

That would be the volume of the large box - the volume of the cube

= 15*25*20 - 10^3

= 7500 - 1000

= 6500 cm^3.

8 0
3 years ago
ABCDE ~ FGHIJ. Figure 2 is a dilation of figure 1, and the scale factor is 0.6. Given that FG = 12 cm, find AB.
avanturin [10]
We known that the figures are similar if and only if the corresponding sides and and angles have the common scale factor. In this item, the scale factor is 0.6. The length of AB is determined by multiplying the length of FG with the scale factor. That is,
                            AB = FG x scale factor
                            AB = (12 cm) x 0.6
                            AB = 7.2 cm
Thus, the length of side AB is 7.2 cm. 
6 0
3 years ago
Read 2 more answers
Please help. right answer will be brainliest.
jek_recluse [69]

Answer:

24 square units

Step-by-step explanation:

6×4=24

3 0
3 years ago
Kara and Steven are biking around a 1,800 kilometer path. They start biking from the same place, at the same time, and in the sa
levacccp [35]
It would take them 120 hours to get to the same point on the path again.

Kara is traveling at half the speed of Steven. Therefore, we Steven finishes his second lap Kara will just be finishing her first lap. They will both be at the starting lap again.

It will take Kara 120 hours to complete the lap. 
1800 / 15 = 120  

(That is a lot of time, do you have the numbers correct?)
3 0
4 years ago
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