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allsm [11]
3 years ago
8

36b-45-18b=9( b- ) help me

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
5 0

Answer:

b=5/3

Step-by-step explanation:

N76 [4]3 years ago
4 0
I’m supposed to write 20 words

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a ladder leans against the sufe of a house. the angle of elevation of the ladder is 70 degrees when the bottom of the ladder is
nekit [7.7K]

Answer:

≈ 35.1 ft

Step-by-step explanation:

The model is a right triangle with ladder being the hypotenuse and the angle between the ground and the ladder is 70°

Using the cosine ratio, with l being the length of the ladder.

cos70° = \frac{adjacent}{hypotenuse} = \frac{12}{l} ( multiply both sides by l )

l × cos70° = 12 ( divide both sides by cos70° )

l = \frac{12}{cos70} ≈ 35.1 ( to the nearest tenth )

The ladder is approx 35.1 ft long

4 0
3 years ago
A drinking cup in the shape of a cone has a height of 5 in, and a radius of 3.5 in. If the
IrinaK [193]
Geometry helps people understand life u are short and don’t know how life helps u
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2 years ago
Please help with this
stiv31 [10]

Answer:

dude your teacher is on crack

7 0
3 years ago
Read 2 more answers
30 points plz help me lo links
katen-ka-za [31]

Answer:

(-1/3, 3/4)

Step-by-step explanation:

9x + 8y = 3

6x - 12y = -11

Let's solve the system by eliminating x. We need the coefficients of x to be additive inverses, so they will add to zero eliminating x. The LCM of 9 and 6 is 18. Let's multiply both sides of the first by 2 and both sides of the second equation by -3.

18x + 16y = 6

-18x + 36y = 33

The coefficients of x are 18 and -18, which add to zero. Now we add these two equations.

52y = 39

y = 39/52

y = 3/4

Now we substitute y with 3/4 in the first equation and solve for x.

9x + 8y = 3

9x + 8(3/4) = 3

9x + 6 = 3

9x = -3

x = -3/9

x = -1/3

Solution: (-1/3, 3/4)

4 0
2 years ago
0.65 is 10 times as much as
leonid [27]
0.65 x 10 = 6.5
0.65 is 10 times as much as 6.5
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3 years ago
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