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3 years ago

Anything helps this is the last one

Mathematics

2 answers:

irga5000 [103]3 years ago

4 0

Answer:

it's -2sqrt7

the first answer

Step-by-step explanation:

pls mark me brainliest!

iVinArrow [24]3 years ago

3 0

Answer:

i am pretty sure it's a.

Step-by-step explanation:

i hope this helps :)

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Please help me on this question it’s question 8

Aloiza [94]

The answer is a d there both irrational

5 0

3 years ago

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What is the circumference of <br> 26 cm

IgorC [24]

Answer:530.9

Solution Steps:

Area of a circle in terms of radius:

Area = π . r2 = 3.14 × 132 = 530.9 square cm.

In terms of diameter:

Area = π . (d/2)2 = 3.14 × (26/2)2 = 3.14 × (13)2 = 530.9 square cm.

In terms of circumference:

Area = C2/(4π) = 81.682/4π = 6671.62/(4 × 3.14) = 6671.62/(12.56) = 530.9 square cm.

Note: for simplicity, some results may be rounded to nearest hundredth and π was rounded to 3.14. See formula details below in this page.

A circle of radius = 13 or diameter = 26 or circunference = 81.68 cm has an area of 530.9 square centimeters which is equal to:

5.309E-8 square kilometers (km²)

0.05309 square meters (m²)

1.312E-5 acres (ac)

5.309E-6 hectares (ha)

2.05E-8 square miles (mi²)

0.0635 square yards (yd²)

0.5715 square feet (ft²)

82.29 square inches (in²)

Formulae:

Step-by-step explanation:

5 0

3 years ago

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Three trigonometric functions for a given angle are shown below. Sine theta = Negative StartFraction 77 Over 85 EndFraction, cos

Likurg_2 [28]

Trigonometric functions are the ratio of the different sides of a right-angled triangle. We can say that the coordinates of the point are (-77, 36).

<h3>What are trigonometric functions?</h3>

Trigonometric functions are the ratio of the different sides of a right-angled triangle.

$\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}$

where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.

Given to us

$Sin(\theta) = \dfrac{-77}{85}$

$Cos(\theta) = \dfrac{36}{85}$

$Tan(\theta) = \dfrac{-77}{36}$

As we know that the Tangent(Tan) is the ratio of perpendicular and base. therefore, we can write the function as,

$\rm Tan(\theta) = \dfrac{Perpendicular}{Base} = \dfrac{-77}{36}$

therefore, the length of the perpendicular is 77, while the length of the base is 36.

As given to us that the value of sin is negative, therefore, the perpendicular will be on the negative side of the y-axis. While the value of cos is positive, therefore, the base will be on the positive side of the x-axis.

Thus, we can say that the coordinates of the point are (-77, 36).

Learn more about Trigonometric functions:

brainly.com/question/6904750

8 0

2 years ago

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4 x 12 = 6 x n 4<br> 6<br> 8<br> 12

raketka [301]

Answer:

Step-by-step explanation:

4 x 12 = 6 x 4 x n

Which gives

48 = 24n

48/ 24 = n

so n = 2

3 0

2 years ago

Which equation is equivalent to -2(2 − 2x) = 4 − 8(1 − x)?

tiny-mole [99]

Answer:

x = 0

Step-by-step explanation:

-2(2 − 2x) = 4 − 8(1 − x)

Apply the distributive property:

−2(2 − 2x) = 4 − 8(1 − x)

(−2)(2) + (−2)(−2x) = 4 + (−8)(1) + (−8)(−x)

−4 + 4x = 4 + (−8) + 8x

Combine like terms:

4x − 4 = (8x) + (4+−8)

4x − 4 = 8x + (−4)

4x − 4 = 8x − 4

Subtract 8x from both sides:

4x − 4 − 8x = 8x − 4 − 8x

−4x − 4 = −4

Add 4 to both sides:

−4x − 4 + 4= −4 + 4

−4x = 0

Divide both sides by -4:

-4x/-4 = 0/-4

6 0

3 years ago