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timama [110]
3 years ago
10

¿Cuál es el valor de 0.1561 redondeado a la décima más cercana?

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0

Answer:

A0.15

Step-by-step explanation:

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Use a right triangle to write the following expression in algebraic expression. Assume that x is positive and in the domain of t
grin007 [14]

Answer:

The algebraic expression for tan(cos^{-1}(9x))=\frac{\sqrt{1-81x^{2}}}{9x}

Step-by-step explanation:

Let θ = cos^{-1}(9x) use the properties of inverse trigonometric functions cos(\theta)=cos(cos^{-1}(\theta))=\theta\\cos(\theta)=cos(cos^{-1}(9x))=9x

In a right angled triangle, the cosine of an angle is

cos(\theta)=\frac{adjacent}{hypotenuse}

Use this expression cos(\theta)=9x  to find what are the sides of the right triangle.

cos(\theta)=\frac{adjacent}{hypotenuse}\\cos(\theta)=\frac{9x}{1}

Next find what is the expression for the opposite side, for this use the Pythagorean theorem and the values above

opposite^{2}+adjacent^{2}=hypotenuse^{2}\\opposite^{2}= hypotenuse^{2}-adjacent^{2}\\opposite =\sqrt{1-81x^{2}}

We said that \theta = cos^{-1}(9x), so now we can use the definition of tangent tangent(\theta)=\frac{opposite}{adjacent} and the right triangle that we defined to find the algebraic expression for

tan(cos^{-1}(9x))

tan(cos^{-1}(9x))=tan(\theta) \\ tan(\theta)=\frac{\sqrt{1-81x^{2}}}{9x}

5 0
3 years ago
uh can someone help me with this please I'm confused ughhh I missed school for two weeks and dk how to do this​
topjm [15]

Answer:

35

Step-by-step explanation:

Top box equals 10

(5x2)

Middle box equals 15

(5-2+2) x 3

Bottom box equals 10

(5x2)

5 0
3 years ago
Read 2 more answers
Or ling needs 2 yards of fabric for a craft project. She has 3 feet already. How many inches of fabric does she still needs?
olga55 [171]
1 yard = 36 inches
2 yards = 72 inches

1 feet = 12 inches
3 feet = 36 inches

72 - 36 = 36 inches

she still needs 36 inches
5 0
2 years ago
Conditional statement:
katrin2010 [14]
The statement that represents the given binomial above is option 2. Both points are positive if and only if they are in the first quadrant. It is true that the coordinate point is in the first quadrant, and both points are positive and it's true that both points are positive if the coordinate point is in the first quadrant. Hope this answer helps.
5 0
3 years ago
Talia wants to write the equation of the graphed line in point-slope form. These are the steps she plans to use: Step 1: Choose
Dafna11 [192]
The incorrect step in Talia's solution is the step 4 which is  "step 4 is incorrect because it shows and incorrect substitution of slope value into the point-slope form". The correct steps are as follow:
step 1: choose a point on the line which is (2,5)
step 2: choose another point on the line which is (1,3)
Step 3: determine the slope which is m = rise / run. The line runs 1 unit and rises 2 units so the slope is m = 2/1
step 4: substitute point on the line (2,5) and the slope of the line such as:
y-y1 = m (x-x1)
y-5 = 2 (x-2)

This is the correct steps.
7 0
3 years ago
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