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beks73 [17]
3 years ago
7

Which statements are correct? Check all that apply. A chord is sometimes a radius. A diameter is always a chord. A tangent is ne

ver a secant. A chord can be longer than a diameter of the same circle. A chord can be shorter than a radius of the same circle. A radius is always congruent to another radius of the same circle.
Mathematics
2 answers:
katrin2010 [14]3 years ago
7 0
1. (false) A chord is never a radius. A chord is the line segment whose 2 endpoints are points on the circle.

2. (true) A diameter is always a chord, in fact, it is the chord of largest length.

3. (true) A tangent is a line in the exterior of a circle, with only 1 common point with a circle. Whereas a secant has 2 common point with a circle and many more in the interior of the circle

4. (false) A chord can be at most equal to the length of the diameter.

5. (true) A chord can be very short. Consider 2 points on the circle which are very close to each other and the chord formed by them.

6. (true)  
Margaret [11]3 years ago
5 0

Answer:

A diameter is always a chord.

A tangent is never a secant.

A chord can be shorter than a radius of the same circle.

A radius is always congruent to another radius of the same circle.

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Zolol [24]

Let

x--------> the amount you have left to spend

y--------> the cost of a shirt you want

z------> the amount of the gift card

we know that

x+y \leq   z --------> equation 1

y=\$ 15 --------> equation 2

z=\$ 60 --------> equation 3

Substitute the equation 2 and equation 3 in the equation [tex] 1 [/tex]

x+y \leq   z

x+15 \leq   60

therefore

<u>the answer is the option</u>

x+15 is less than or equal to 60

7 0
3 years ago
Read 2 more answers
Professor York randomly surveyed 240 students at Oxnard University and found that 150 of the students surveyed watch more than 1
BaLLatris [955]

Answer:

1727 students

Step-by-step explanation:

Here we have the formula for sample size given as

n = \frac{p(1-p)z^2}{ME^2}

Where:

p = Mean

ME = Margin of error = 3

z = z score

Therefore, we have

p = 150/240 = 0.625

z  at 99 % = 2.575

ME = \pm3%

Therefore n = \frac{0.625(1-0.625)2.575^2}{0.03^2} = 1726.73

The number of students Professor York have to sample to estimate the proportion of all Oxnard University students who watch more than 10 hours of television each week within ±3 percent with 99 percent confidence = 1727 students.

5 0
3 years ago
Jimmy measured to find the total number of square inches that covered the top of a rectangular table.
Tanzania [10]

Answer: it is a

Step-by-step explanation:

6 0
3 years ago
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In the given diagram, find the values of x, y, and z.
anyanavicka [17]

Answer:

B) x=64, y=21, z=64

Step-by-step explanation:

X=180-116=64

Y cannot equal 115, and one angle is already 95, and that would put it over 180.  The only remaining choice for y=21

z=180-95-21=64

5 0
3 years ago
What is the correct answer to this?
ra1l [238]

Answer:

33.4933 ≈ 33.5 mm³

Step-by-step explanation:

Given that,

→ Radius (r) = 2 mm

Formula we use,

→ 4/3 πr³

Let's solve for the volume of sphere,

→ 4/3 πr³

→ 4/3 × 3.14 × 2 × 2 × 2

→ 4/3 × 3.14 × 8

→ 4/3 × 25.12

→ 100.48/3

→ 33.4933

→ [ ≈ 33.5 mm³ ]

Hence, volume of sphere is 33.5 mm³.

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1 year ago
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