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sveticcg [70]
3 years ago
13

teachers divided students into groups of 3. each group of 3 wrote a report that had 9 pictures in it. the students used 585 pict

ures altogether. how many students were there in all?
Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
7 0
There were 195 students all together
agasfer [191]3 years ago
3 0
198 students because you divide 585 by 9 then multiple by 3
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Derek flips a coin and rolls a number cube at the same time. Derek rolls an even number. Find the probability that the coin came
Andreas93 [3]
Coin: 50%; 1/2 chance to get heads
dice: 17%; 1/6 chance to get 2
7 0
3 years ago
Read 2 more answers
A=8, b=5, C=90 degree; Find c, A, and B<br><br> This is for the law of sine and cosine
brilliants [131]

Answer:

• c = √89 ≈ 9.434

• A = arcsin(8/√89) ≈ 57.995°

• B = arcsin(5/√89) ≈ 32.005°

Step-by-step explanation:

By the law of cosines, ...

c² = a² + b² -2ab·cos(C)

Since c=90°, cos(C) = 0 and this reduces to the Pythagorean theorem for this right triangle.

c = √(8² +5²) = √89 ≈ 9.434

Then by the law of sines (or the definition of the sine of an angle), ...

sin(A) = a/c·sin(C) = a/c = 8/√89

A = arcsin(8/√89) ≈ 57.995°

sin(B) = b/c·sin(C) = b/c = 5/√89

B = arcsin(5/√89) ≈ 32.005°

6 0
3 years ago
I don't know how to simplify
In-s [12.5K]
(5-2/x)/4-3/x^2

after simplifying these
(5x-2)/x(4x^2-3)/x^2
x(5x-2)/(4x^2-3)
5x^2-2x/4x^2-3

now u can solve it


6 0
3 years ago
Please help me answer
suter [353]

Answer:

The answer is indeed with Right angles

4 0
2 years ago
What is the answer to 3/4d-1/2=3/8+1/2d
ElenaW [278]

Answer:

d=7/2

Step-by-step explanation:

3/4d-1/2=3/8+1/2d

multiply all by 8, to make them into whole numbers (makes it easier)

6d-4=3+4d

move terms

6-d-4d=2d

3+4=7

7=2d

d=7/2

5 0
3 years ago
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