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zimovet [89]
3 years ago
11

when a ladder is rested against a tree, the foot of the ladder is 1 m from the base of the tree and forms an angle of 64° with t

he group. How far up the tree does the ladder reach.​
Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

2.05 meters

Step-by-step explanation:

Superimpose a triangle when drawing out the situation.  The distance the ladder reaches up the tree is the side of the triangle opposite of the angle.  The distance the ladder is from the tree is side adjacent to the triangle.  We can use tangent to solve this.

Tan X = (opposite side)/(adjacent side)

Tan 64 = a/1

Tan 64 = a         (anything over 1 is just itself)

2.050303842 = a   (use tan on your calculator)

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Two thirds a number plus 4 is 7
Sergio039 [100]
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Subtract 4 from both sides
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3*3/2= 9/2

Final answer: 9/2 or 4.5
7 0
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7 0
3 years ago
What type of circuit measurement is made by placing a meter’s test leads in parallel with a deenergized component?
sladkih [1.3K]
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3 0
3 years ago
if ashley is in the 85th percentile and the mean of her test scores is 80 with a standard deviation of 15, which of the followin
kkurt [141]
The 85th percentile is a probability of 0.85 and its location is shown in the bell curve below 

We need to look up on the z-table the value of z when P(Z<z) = 0.85 or P(Z>z) = 0.15

Value of z-score when p-value P(Z>z) = 0.15 is z = 1.0364

Next step is to use the formula of z-score to work out X
z-score = (X-μ) / σ
1.0364 = (X-80) / 15
1.0364 × 15 = X - 80
X = 15.546 + 80
X = 95.5

Most likely score that Ashley gets is 95.5


8 0
3 years ago
Read 2 more answers
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