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Viefleur [7K]
3 years ago
13

What is the Value of x? 30 = x -17

Mathematics
2 answers:
iren [92.7K]3 years ago
5 0
47, you would add the seventeen to the opposite side.
Nuetrik [128]3 years ago
5 0
To find the value of x, you need to add 30 and 17 to get the answer. So 30+17= 47. 
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A flagpole is located at the edge of a sheer y = 70-ft cliff at the bank of a river of width x = 40 ft. See the figure below. An
Gnom [1K]
I would solve this using tangents.  Let h be height of flagpole.
Set up 2 right triangles, each with a base of 40.
The larger triangle has height of "h+70"
Smaller triangle has height of 70.

Now write the tangent ratios:
tan A = \frac{h+70}{40}  , tan B = \frac{70}{40}

Note: A-B = 9
To solve for h we need to use the "Difference Angle" formula for Tangent
tan (A-B) = \frac{tanA - tanB}{1+tan A  tan B}
Plug in what we know:
tan(9) = \frac{ \frac{h+70}{40} -  \frac{70}{40}}{1+ (\frac{h+70}{40})(\frac{7}{4})}
tan (9) = \frac{ \frac{h}{40}}{ \frac{7h +650}{160}} = \frac{4h}{7h+650}
h = \frac{650 tan(9)}{4-7 tan(9)}
h = 35.6
7 0
3 years ago
Plz help due 2morrow 14 and 15
lions [1.4K]

Answer:

14 length of the side is 3x-7

and 15 length of side is 2x+6

6 0
3 years ago
What is the probability that a randomly selected makeup item from her bag will be an eyeshadow, if she has 15 cosmetics and only
Lelu [443]
The answer is 5/15 which is simplified to 1/3
8 0
3 years ago
The diagonal in a rectangle is 20 units long, and the angle between the diagonal and a side is 36º 42'.
mylen [45]
Side adjacent to the given angle: x
Diagonal=hypotenuse=20
cos (36° 42') =(side adjacent to angle 36° 42')/Hypotenuse
cos (36° 42')=x/20
Solving for x. Multiplying both sides of the equation by 20:
20 cos (36° 42')=20 (x/20)
20 cos (36° 42')=x
x=20 cos (36° 42')
x=20 (0.801775644)
x=16.03551288
x=16.04

Answer: Option D. 16.04
3 0
3 years ago
The weights of packs of chewing gum for a certain brand have a mean of 47.1 grams and a standard deviation 2.4
Verdich [7]

A Z-score helps us to understand how far is the data from the mean. The correct option is B.

<h3>What is Z-score?</h3>

A Z-score helps us to understand how far is the data from the mean. It is a measure of how many times the data is above or below the mean. It is given by the formula,

Z = \dfrac{X- \mu}{\sigma}

Where Z is the Z-score,

X is the data point,

μ is the mean and σ is the standard variable.

The weight of a randomly selected pack of gum has a z-score of 3.11. Therefore, The weight of this pack of gum is heavier than the mean weight by 3.11 standard deviations.

Hence, the correct option is B.

Learn more about Z-score:

brainly.com/question/13299273

#SPJ1

4 0
2 years ago
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