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evablogger [386]
3 years ago
9

PLEASE I NEED THE ANSWER DON'T IGNORE MY QUESTION!!!

Mathematics
2 answers:
kenny6666 [7]3 years ago
3 0

Answer:

x=7.8

Step-by-step explanation:

take 49 degree as reference angle

using cos rule

cos 49=adjacent/hypotenuse

0.65=x/12

0.65*12=x

7.8=x

pentagon [3]3 years ago
3 0

Answer:

x=7.8

Step-by-step explanation:

Step-by-step explanation:

take 49 degree as reference angle

using cos rule

cos 49=adjacent/hypotenuse

0.65=x/12

0.65*12=x

7.8=x

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Wich number is the principal square root of 49
myrzilka [38]
A principle square root of a real number that's not negative, such as 49, is the square root of that number that is not negative.

If you take the square root of 49, you get either -7 or 7, since both 7^{2} and (-7)^{2} equal 49. However, the principle square root would be A) 7, since it's not negative.
3 0
3 years ago
28 points !!!! help
RoseWind [281]

Answer:

12 cm

Step-by-step explanation:

The area (A) of a trapezium is calculated as

A = \frac{1}{2} h (a + b)

where h is the perpendicular height and a, b the parallel bases.

Here A = 45, h = 5, a = 6 and b = ?, thus

45 = \frac{1}{2} × 5 × (6 + b) = 2.5(6 + b) = 15 + 2.5b ( subtract 15 from both sides )

30 = 2.5b ( divide both sides by 2.5 )

b = 12

The measure of the other parallel side is 12 cm

8 0
3 years ago
Read 2 more answers
A bag contains 5 red cubes and 7 white cubes. Celinda will select one cube, put it in her pocket, and then select a second cube.
Len [333]
The number of ways of picking up a red cube out of 12 cubes are 5/12. Number of ways of picking up a second red cube is 4/11. 
<span>Thus probability of picking up 2 red cubes = 5/12 * 4/11 = 20/121. 

20 / 121 = .165 or .17

So the probability of Celinda getting two red cubes is .17.</span>
4 0
3 years ago
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BRAINLIESTTT ASAP!! PLEASE HELP ME :)
NeX [460]
No because when you variables (with exponents) you add the exponents together.
x^3 • x^3 • x^3 = x^(3+3+3) = x^9
Let’s plug in a number for x to make sure this is correct.
x = 2
2^3 • 2^3 • 2^3 = 8 • 8 • 8 = 512
2^9 = 512
8 0
3 years ago
Write four and five-eighths as an improper fraction and as a mixed number.<br><br> I NEED HALP!
Hatshy [7]
4 5/8 is a mixed number
((4*8)+5)/8
(32+5)/8
37/8 is an improper fraction.

Hope this helps :)
6 0
3 years ago
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