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umka2103 [35]
3 years ago
8

Suppose c>d. explain why the following inequalities are true:

Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer: Optional

Step-by-step explanation:

Since c is greater than d, 2c would be greater than 2d, because when it’s like this 2c

It sometimes means multiply.

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5 Solve the equation sin 2x = 2 cos 2x, for 0°<x< 180°​
Slav-nsk [51]

Answer:

Step-by-step explanation:

plot | 2 x = 2 cos(2 x) | x = 0 ° to 180 °

3 0
3 years ago
Solve for x 6 (8X minus 1) equals 9 (x + 2)
Oxana [17]

Answer:

x = \frac{8}{13}

Step-by-step explanation:

Given

6(8x - 1) = 9(x + 2) ← distribute parenthesis on both sides

48x - 6 = 9x + 18 ( subtract 9x from both sides )

39x - 6 = 18 ( add 6 to both sides )

39x = 24 ( divide both sides by 39 )

x = \frac{24}{39} = \frac{8}{13}

8 0
3 years ago
Please can someone help me on these? solve this equation by factorising: 2x^2 + 5x + 2 = 0
slavikrds [6]
2x^2 + 5x + 2 = 0\\
2x^2+4x+x+2=0\\
2x(x+2)+1(x+2)=0\\
(2x+1)(x+2)=0\\
x=-\frac{1}{2} \vee x=-2

x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
x-2 =\sqrt3 \vee x-2=-\sqrt3\\
x=2+\sqrt3 \vee x=2-\sqrt3
7 0
3 years ago
Rachel and her friends are making necklaces out of beads and straws. They plan to use 12 beads and 5 straws for each necklace. T
bagirrra123 [75]

Answer:

225 necklaces.

Step-by-step explanation:

Assuming that they have the necessary amount of straws to match the beads then we can use the following simple equation to solve this problem.

t = b/12  ... where t is the total amount of necklaces and b is the number of beads you have

t = 2700 / 12

225 necklaces.

For 225 necklaces you would also need 1125 straws since each necklace requires 5 straws to be fully made. Therefore if you have this amount you should not run into any problems.

3 0
3 years ago
What is the answer to <br> -k - (-8k)
g100num [7]

Answer:

if we simplify then the answer is 7k

Step-by-step explanation:

can someone please answer my question from my profile.

4 0
3 years ago
Read 2 more answers
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