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lina2011 [118]
3 years ago
10

PLS HELP I RLY NEED IT

Mathematics
2 answers:
never [62]3 years ago
5 0

Answer:

cos 60° = 1/2, because the cosine and sine are complements

Step-by-step explanation:

I took the test.

Amiraneli [1.4K]3 years ago
4 0

Answer:

d. cos 60° = 1/2, because the cosine and sine are complements

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What is the difference of the two polynomials? (NineX squared plus 8X) minus (twoX squared plus 3X)
bagirrra123 [75]

Answer:

7x {}^{2}  + 5x

Step-by-step explanation:

9x {}^{2} + 8x - (2x {}^{2} + 3x) \\  \\  = 9x {}^{2} + 8x - 2x {}^{2} - 3x (remove \: brackets) \\\  \\ = 7x {}^{2} - 5x

5 0
2 years ago
The quartiles of any distribution are the values with cumulative proportions 0.25 and 0.75. What are the quartiles of the standa
choli [55]
\mathbb P(X\le Q_1)=F_X(Q_1)=0.25\implies Q_1={F_X}^{-1}(0.25)\approx-0.6745

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By symmetry of the distribution, you then have

Q_3=-Q_1\approx0.6745
6 0
3 years ago
Suppose the system of linear equations has infinitely many solutions. What is the value of y for the second equation?
Otrada [13]
I believe it would be 4

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6 0
3 years ago
Read 2 more answers
If 20 chickens laid 120<br> eggs. At this rate, how<br> many eggs would 30<br> chicken lay?
svetoff [14.1K]

Answer:

180 eggs is the correct amount.

6 0
3 years ago
The total surface area of this cuboid is 112cm squared find the value of x
Liono4ka [1.6K]

Answer:

The height of cuboid is 3 cm

Step-by-step explanation:

Total surface area of cuboid  = 2lb+2bh+2hl

Length of cuboid = 10 cm

Width of cuboid = 2 cm

Let the height be x

Total surface area of cuboid  = 2(10)(2)+2(2)(x)+2(x)(10)

Total surface area of this cuboid is 112 cm squared

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40+4x+20x=112

40+24x=112

24x=112-40

24x=72

x=\frac{72}{24}

x=3

Hence the height of cuboid is 3 cm

5 0
2 years ago
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