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Levart [38]
3 years ago
15

Belkis is pulling a toy by exerting a force of 1.5 newtons on a string attached to the toy.

Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0
From what I imagine in the problem description, the toy is located on the ground. Then, Belkis is pulling on the string to keep the toy moving just like how you put a leash on a dog. My illustration is shown in the picture. The F arrow is where Belkis pulls it. Its component vectors are Fx and Fy, as shown. 

From the figure, we can see that it forms a right triangle. So, it makes it easy because the pythagorean theorems are applicable and we can easily use trigonometric functions. First, let's determine Fy which is located opposite to the angle. Since we know the hypotenuse F to be 1.5 N, so we use the sine function:

sin 52° = Fy/F = Fy/1.5
Fy = 1.182 N

For the horizontal component, Fx is parallel to the adjacent side with respect to the angle. Thus, we use the cosine function.

cos 52° = Fx/F = Fx/1.5
Fx = 0.923 N

irakobra [83]3 years ago
4 0

Answer:

a on edg

Step-by-step explanation:

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Answer:

  • A  x² +2x +4
  • D  x² +10x +26

Step-by-step explanation:

One way to determine if the equation has any real solutions is to look at its discriminant. For the equation ax²+bx+c = 0, the discriminant is ...

  d = b² -4ac

When the discriminant is negative, both solutions to the quadratic are complex. There are no real solutions in that case.

We can find the discriminant values to be ...

  A: d = 2² -4(1)(4) = -12 . . . . no real zeros

  B: d = 0² -4(3)(-5) = 60 . . . two real zeros

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  D: d = 10² -4(1)(26) = -4 . . .no real zeros

Expressions A and D have no real zeros.

_____

<em>Comment on the question</em>

You are given an <em>expression</em>, not an <em>equation</em>. There is no equal sign. Hence, we cannot talk about <em>solutions</em>. We can only talk about <em>zeros</em>, values of x that make the expression have a value of zero.

5 0
3 years ago
Whats the coefficient of 1/2x^2+x+7
dsp73

Answer:

<u>B. 1/2 and 1.</u>

Step-by-step explanation:

The coefficient of a variable is the number that the variable is being multiplied for. In this example. We can see that x² is being multiplied by 1/2, therefore <u>1/2 is one of the coefficients</u>.

In the case of x, it doesn't have a number before it, it means that it's being multiplied by 1. Hence, our <u>second coefficient is 1</u>.

4 0
2 years ago
Given g(x) = x^2 - x, find g (2/3).
ValentinkaMS [17]

Answer:

Step-by-step explanation:

g(x) = x^2 - x

g(2/3) = (2/3)^2 - 2\3 = 4/9 - 2/3 = 4/9 - 6/9 = -2/9

7 0
3 years ago
Read 2 more answers
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