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3 years ago

The circle is 5.1 cm what is the diameter and radius of the circle

Mathematics

1 answer:

Andrews [41]3 years ago

4 0

Answer:

Step-by-step explanation:

C=2πr

5.1cm=2×3.14×r

5.1cm=6.28r

r=0.8cm

d=0.8cm×2

d=1.6cm

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Check all that apply. Sec θ is undefined for θ = ____. A. π. B. π/2. C. 0. D. 3π/2.

Zanzabum

Secant is a trigonometric function that is the reciprocal of the function cosine. This means that in a cartesian plane, the value of secant is equal to r / x. For the values to be undefined, x should be zero. The angles are π/2 and 3π/2. The answers are B and D.

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3 years ago

Read 2 more answers

Write the expression in factored form s^2-20s-100

KatRina [158]

Answer:

The factors of given expression are 10+10√2 and 10-10√2.

Step-by-step explanation:

We have given a quadratic expression.

s²-20s-100

We have to find factors of given expression.

We use quadratic formula to find factors.

x = (-b±√b²-4ac) / 2a

From given expression, a = 1 , b = -20 and c = -100

Putting values in above formula, we have

x = (-(-20)±√(-20)²-4(1)(-100) ) / 2(1)

x = (20±√400+400 ) / 2

x = (20±√800) / 2

x = (20± √400×2) / 2

x = (20±20√2) / 2

x = 10±10√2

Hence, the factors of given expression are 10+10√2 and 10-10√2.

3 0

3 years ago

What property of a rhombus is used in this proof of showing that a triangle is an equilateral triangle?

iragen [17]

Answer:

Step-by-step explanation:

4 0

2 years ago

Drag each tile to the correct box.

wlad13 [49]

The correct match of each tile of the equation with its solution is:

n - 13 = - 12 →→→ 1
n/5 = -1/5 →→→ -1
n + 15 = - 10 →→→ -25

<h3>How do we match each tile to the correct box?</h3>

To match each tile to the correct box, we have to solve the arithmetic operations in the box, then drag the correct tile that matches our answer into the box.

From the image attached below;

n - 13 = - 12

Let us add (+13) to both sides to eliminate (-13), i.e.

n - 13 + 13 = - 12 + 13

n = 1

n/5 = -1/5

multiply both side by 5

n/5 × (5) = -1/5 × (5)

n = -1

n + 15 = - 10

n +15 - 15 = - 10 - 15

n = -25