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2 years ago

What is x on this right triangle? Round to the nearest tenth.

Mathematics

2 answers:

MArishka [77]2 years ago

8 0

Answer:

x ≈ 38.7°

Step-by-step explanation:

Using the tangent ratio in the right triangle.

tanx = $\frac{opposite}{adjacent}$ = $\frac{8}{10}$ , thus

x = $tan^{-1}$ ( $\frac{8}{10}$ ) ≈ 38.7° ( to the nearest tenth )

Naya [18.7K]2 years ago

3 0

Answer:

= 109.5 to the nearest tenth.

Step-by-step explanation:

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The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. Find the number.

Monica [59]

Equation to find number: $\frac{1}{n}$ - 3 = $\frac{20}{n}$

Number's value: n = $-\frac{19}{3}$

Step-by-step explanation:

Let n be the unknown number.

The reciprocal basically makes the number (n in this case) a fraction. So, that being said, the reciprocal of n would be $\frac{1}{n}$ .

The difference of three and the reciprocal of a number ( $\frac{1}{n}$ ) would be $\frac{1}{n}$ - 3.

The quotient of 20 and the number (n) would be $\frac{20}{n}$ .

So, with this information we've gathered so far, we can come up with an equation to find what the number equals.

Equation: $\frac{1}{n}$ - 3 = $\frac{20}{n}$

To find what the number equals we must solve the equation.

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3 years ago

The length of the base of an isosceles triangle is x. The length of a leg is 4x - 2. The perimeter of the triangle is 95. Find x

adell [148]

Answer:

x = 11

Step-by-step explanation:

sides of triangle measure: 'x', '4x-2' and '4x-2' since isosceles means both legs are equal

perimeter is the sum of all sides, so set up equation:

95 = 4x - 2 + 4x - 2 + x

95 = 8x - 4 + x

95 = 9x - 4

99 = 9x

x = 11

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3 years ago

A mathematical relationship can be represented in which ways? Choose all that apply.

Ivenika [448]

B , A , C , D , it’s all of the above

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2 years ago

Write x^2 + 6x -7 in the form (x+a)^2 +b where a and b are integers please

ANTONII [103]

Answer:

$(x + 3) {}^{2} - 16$

Step-by-step explanation:

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3 years ago

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Alexandra [31]

Answer:

(0,-1)

Step-by-step explanation:

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3 years ago