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3 years ago

• What is the diameter of the circle?

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

8 0

a diameter of a circle is a line drawn through the center of a circle.

Andre45 [30]3 years ago

4 0

Answer:

Radius = r

Diameter = 2r

Circumference = 2πr

Area = πr²

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Evaluate the expression.

Rudik [331]

(26/13) (-7) + 14 - 4

2(-7) + 14 - 4

-14 + 14 - 4

-4

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3 years ago

Add the doubles . Then use the doubles to help you solve the doubles -plus -2facts

SpyIntel [72]

Answer: 4 + 4 = 8

6 + 6 = 12

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3 years ago

Which sequence is geometric

Vitek1552 [10]

If a, b, c, d is geometric sequence, then

$\dfrac{b}{a}=\dfrac{c}{b}=\dfrac{d}{c}=const.$

A. 5; 15; 25; 35

$\dfrac{15}{5}=3;\ \dfrac{25}{15}=\dfrac{5}{3}-NOT$

B. 5; 10; 20; 40

$\dfrac{10}{5}=2;\ \dfrac{20}{10}=2;\ \dfrac{40}{20}=2-YES$

C. 6; 12; 18; 24

$\dfrac{12}{6}=2;\ \dfrac{18}{12}=\dfrac{3}{2}-NOT$

D. 7; 14; 21; 28

$\dfrac{14}{7}=2;\ \dfrac{21}{14}=\dfrac{3}{2}-NOT$

Answer: The sequence B. 5; 10; 20; 40 is geometric.

4 0

3 years ago

Please help me!!!!!!!

GrogVix [38]

4x^2 - 30 = 34
4x^2 = 34 + 30
4x^2 = 64
x^2 = 64/4
x^2 = 16
x = sqrt 16
x = -4 and 4......E and F

5 0

4 years ago

A plumber charges $50 for a service call plus $80 per hour. If she spends no longer than 8 hours a day at any one site, find a l

Paha777 [63]

Answer:

$C(t)=80t+50, \text{ for }t\leq 8$ .

Step-by-step explanation:

Let C represent total daily charges in dollars and t represent time in hours.

We have been given that a plumber charges $50 for a service call plus $80 per hour.

The amount charged for t hours would be $80t$ .

The total amount charged for t hours would be $C(t)=80t+50$ .

We are also told that plumber spends no longer than 8 hours a day at any one site, this means that time t have a restriction as:

$t\leq 8$

Therefore, our required cost function would be $C(t)=80t+50, \text{ for }t\leq 8$ .

3 0

4 years ago