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3 years ago

MANY POINTS! please answer questions 5,6,7

Mathematics

1 answer:

Maslowich3 years ago

5 0

Answer:

Question 5

$8\sqrt{5} + 3\sqrt{30}$

Question 6

yes

Question 7

Step-by-step explanation:

Question 5

$\sqrt{5} (8*3\sqrt{6})\\8\sqrt{5} + 3\sqrt{5*6}\\8\sqrt{5} + 3\sqrt{30}$

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3 years ago

A triangle has an area of 240 square Inches. The height of the triangle is 15 inches. What is the length of the base of the tria

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Answer:

$32\:\mathrm{in}$

Step-by-step explanation:

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3 years ago

Read 2 more answers

A circle has a central angle measuring startfraction 7 pi over 6 endfraction radians that intersects an arc of length 18 cm. wha

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The radius of this circle is (B) 4.9 cm.

<h3>To find the radius of the circle:</h3>

To solve this problem, we need to, first of all, convert the angle from radians to degrees.

data;

length of an arc = 18cm
angle = 7/6π rads
π= 3.14

$\frac{7\pi }{6rads} =210^{0}$

Length of an Arc:

The formula for the length of an arc is given:

$l_{arc} =$ θ/360 × $2\pi r$

Let's substitute the values and solve:

$18=\frac{210}{360} *2\pi r\\18=3.663r\\r=\frac{18}{3.663} \\r=4.9cm$

From the calculations above, the radius of this circle is 4.9cm.

Therefore, the radius of this circle is (B) 4.9 cm.

Know more about radius here:

brainly.com/question/24375372

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Complete question

A circle has a central angle measuring 7pi/6 radians that intersects an arc of length 18 cm. What is the length of the radius of the circle? Round your answer to the nearest tenth. Use 3.14 for pi.

(A) 3.7 cm

(B) 4.9 cm

(D) 15.4 cm

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Answer:

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Step-by-step explanation:

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3 years ago

Simplify each expression by combining like terms <br> 3x^-1 - 10x^-1

Dmitry_Shevchenko [17]

Answer:

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4 years ago