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3 years ago

What is the value of x? sin49° = cosx Enter your answer in the box. x = ? °

Mathematics

1 answer:

Anni [7]3 years ago

3 0

Answer:

$x = 41^{\circ}$

Step-by-step explanation:

$\sin(49^{\circ}) = \cos(90^\circ -49^\circ) = \cos (41^\circ)$

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Solve: -7 < 2x+5 < 7

kondor19780726 [428]

Answer:

$- 6 < x < 1$

Step-by-step explanation:

first things first:

$- 7 < 2x + 5 \\ - 7 - 5 < 2x + 5 - 5 \\ - 12 < 2x \\ - 6 < x$

now:

$2x + 5 < 7 \\ 2x + 5 - 5 < 7 - 5 \\ 2x < 2 \\ x < 1$

now the intersection is:

$- 6 < x < 1$

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3 years ago

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fiasKO [112]

Answer:

2 × n - 1 = x

Step-by-step explanation:

for example:

$2(4) - 1 = 7$

$2(5) - 1 = x \\ 10 - 1 = x \\ x = 9$

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2 years ago

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lesya692 [45]

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3 years ago

BRAINLIEST!! What’s 36.3 square root ?

Marat540 [252]

Answer:

6.02

Step-by-step explanation:

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3 years ago

Write the equation of the line y=(5)/(6)x+(7)/(6) perpendicular to

Travka [436]

Answer:

6x + 5y + 13 = 0.

Step-by-step explanation:

y = 5/6x + 7/6

Gradient = 5/6

Since the line is perpendicular to y = 5/6x + 7/6

then its gradient is -6/5.

Hence its equation is: point (-8,7).

y - 7 = -6/5(x -(-8))

multiplying through by 5 we get;

5y - 35 = -6(x + 8)

5y - 35 = -6x - 48

6x + 5y + 13 = 0

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3 years ago