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3 years ago

Sample Response: A circle measures 360 degrees, so

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

7 0

Answer:

A semicircle measures 180°

Half of 180º is 90º

A right angle measures 90º.

Step-by-step explanation:

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When exercising, the maximum heart rate (r ) in beats per minute is modeled by the equation shown in the box, where (a ) represe

worty [1.4K]

Answer:

186 beats per minute

Step-by-step explanation:

The maximum heart rate (r ) in beats per minute is modeled by the equation :

r = 220 - a ...(1)

Where

a is age of the person in years

If Sanchez age is, a = 34 years

Put a = 34 in equation (1)

r = 220 - 34

= 186 beats per minute

Hence, the maximum heart rate is 186 beats per minute.

7 0

3 years ago

Solve log x - 2 = 3 A. 1 B. 100,000 C. 10,000 D. 10

ahrayia [7]

Answer: $100,000$

Step-by-step explanation:

Given :

$logx - 2 = 3$

add 2 to both sides

$log x = 5$

Therefore :

$x = 10^{5}$

$x = 100,000$

4 0

2 years ago

xand y are light house. y being 20km due east of x and from a ship due south of x the bearing of y was 055°. what is the distanc

leonid [27]

Answer:

I) |xz| ≈ 28.6 km

II) |yz| ≈ 34.8 km

Step-by-step explanation:

Let's assume that the position of ship due south of x is z (aà pictor representation of the question is attached)

|xy| = 20 km, |xz| = ?, |yz| = ?, θ(y) = 55°

Using Trigonometric ratio - SOHCAHTOA

I) Tan θ = |xz| ÷ |xy| ⇒ Tan 55° = |xz| ÷ 20

|xz| = 20 * Tan 55 = 20 * 1.428

|xz| = 28.56 km

|xz| ≈ 28.6 km

II) Cos θ = |xy| ÷ |yz| ⇒ Cos 55° = 20 ÷ |yz|

|yz| * Cos 55° = 20 ⇒ |yz| = 20 ÷ Cos 55°

|yz| = 20 ÷ 0.574 = 34.84 km

|yz| ≈ 34.8 km

4 0

3 years ago

Which one is greater 10.05 or 10.005

Blababa [14]

10.05 = 10 5/100 = 10 1/20
10.005 = 10 5/1000 = 10 1/200

therefore, 10.05 is greater then 10.005

8 0

3 years ago

Please helpppppp tysm Have a wonderful day.

pav-90 [236]

Answer:

418.4

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers