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Assoli18 [71]
3 years ago
13

A student claims that the rectangular point below can be represented by the

Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

Since we don't have a figure we'll assume one of them is right and we're just being asked to check if they're the same number.  I like writing polar coordinates with a P in front to remind me.

It's surely false if that's really a 3π/7; I'll guess that's a typo that's really 3π/4.

P(6√2, 7π/4) = ( 6√2 cos 7π/4, 6√2 sin 7π/4 )

P(-6√2, 3π/4) = ( -6√2 cos 3π/4, -6√2 sin 3π/4 )

That's true since when we add pi to an angle it negates both the sine and the cosine,

cos(7π/4) = cos(π + 3π/4) = -cos(3π/4)

sin(7π/4) = sin(π + 3π/4) = -sin(3π/4)

Answer: TRUE

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A model doll house is 3.25 feet long. The real house is 30 yards long. What is the unit rate that describes the relationship of
Sphinxa [80]
If you would like to know the unit rate that describes the relationship of the real house to the model doll house, you can calculate this using the following steps:

3.25 feet ... 30 yards
1 foot ... x yards = ?

3.25 * x = 30 * 1
3.25 * x = 30
x = 30 / 3.25
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The correct result would be 9.23 yards/foot.
6 0
3 years ago
A field goal is worth 3 poins an extra point is 1 point. in 2016 adam vinaiteriof the indianapolis colts made a total of 71 fiel
Naddika [18.5K]

Answer:

field goal points: 213

extra points: 125

Step-by-step explanation:

Given that a field goal is worth 3 points, then the total points made by field goals are: number of field goals * 3. In the case of Adam, that is: 71*3 = 213 points.

An extra point is worth 1 point, then 125 extra points are equivalent to 125 points.

3 0
3 years ago
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aleksandrvk [35]
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6 0
3 years ago
What is the absolute value of 4x+1 equals 3
Maru [420]

Answer:

.5 (1/2)

Step-by-step explanation:

First you need to solve the equation and find its answer. In this case, 4x+1=3 would equal 1/2 (in this case it'll be .5) Then you need to figure out how far it is from 0. Which is easy, since absolute value is always positive. Your answer will be .5

3 0
3 years ago
Select the correct answer.
MrRissso [65]

Answer:

80 million cars

Step-by-step explanation:

By looking at the graph at the year 2015 it looks about 78 million.  But estimating would round up to 80.

Hence, the estimation for worldwide car sales is 80 million cars.

6 0
2 years ago
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