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fredd [130]
3 years ago
15

The angle a vector makes with the x-axis of a coordinate system must be what size in order to make one or more of its components

negative? A) Less the 30 degrees B) between 30 and 60 degrees C) between 61 and 90 degrees D) greater then 90 degrees
Mathematics
2 answers:
marta [7]3 years ago
7 0
D) greater than 90 degrees

_____
An angle greater than 90 degrees will put it in the second quadrant, where the x-component is negative.
rodikova [14]3 years ago
6 0

Answer:

Greater than 90 degrees.

Step-by-step explanation:

Let a vector R make angle \theta with the x-axis. Then, the component along the x-axis would be

R cos\theta

Component along y-axis would be

R sin\theta

For 0 both the components will be positive and lie in the first quadrant. If angle of vector is more than 90 degrees, one of the components would be negative. For example, angle between 90 to 180 degrees, x-component would be negative while between 180-270 degrees, both the components would be negative.

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Is -1 a solution to 4x - 3 &lt; 5?<br> (look at the picture)
inessss [21]

Answer:

Yes

Step-by-step explanation:

Assuming that the question is asking for -1 to be plugged in as x

4(-1)-3≤5

-4-3≤5

-7≤5

5 0
2 years ago
Can someone please give me the answer I will mark u brilliant
Vikentia [17]
Rounding the answer is 100.
7 0
2 years ago
Read 2 more answers
Children's tickets to a local play cost $\$1.50$ less than adult tickets. At one performance 325 children tickets and 175 adult
svetoff [14.1K]

Answer:

  $8.00

Step-by-step explanation:

The problem statement gives two relations between the prices of two kinds of tickets. These can be used to write a system of equations for the ticket prices.

__

<h3>setup</h3>

Let 'a' and 'c' represent the prices of adult and children's tickets, respectively. The given relations can be expressed as ...

  a - c = 1.50 . . . . . . . adult tickets are $1.50 more

  175a +325c = 3512.5 . . . . . total revenue from ticket sales.

__

<h3>solution</h3>

We are only interested in the price of an adult ticket, so we can eliminate c to give one equation we can solve for 'a'. Using the first equation, an expression for c is ...

  c = a -1.50

Substituting that into the second equation, we have ...

  175a +325(a -1.50) = 3512.50

  500a -487.50 = 3512.50 . . . . . . simplify

  500a = 4000 . . . . . . add 487.50

  a = 8 . . . . . . . . . divide by 500

An adult ticket costs $8.

5 0
1 year ago
A table costs Rs 720 to make. He sells it for Rs 920. What percentage of profit did he earn?
jenyasd209 [6]

Answer:

27 7/9%

Step-by-step explanation:

Take the selling price and subtract the cost

920 -720 = 200

Divide it by the cost

200/720

.27777777

Change to percent form

27.777777%

27 7/9%

3 0
3 years ago
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Hi, I need to send you a screenshot​
Kazeer [188]
Whyyy notttt I guessss
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2 years ago
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