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77julia77 [94]
3 years ago
11

Does the point (0,4) make either equations y=-2x and y=x+3 true? Explain.

Mathematics
1 answer:
Nikolay [14]3 years ago
5 0

Answer:

Neither

Step-by-step explanation:

To verify, we substitute the values in the equations:

y = -2x\\y = -2 \times 0\\y = 0

however, the value should be 4. Hence this equation does not satisfy the co-ordinate.

y = x+3\\y= 0+3\\y = 3

however, the value should be 4. Hence this equation does not satisfy the co-ordinate.

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Which of the following equations is an example of inverse variation between variables x and y ?
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a) y = 15 x is an example of direct variation, with proportionality constant = 15

b) is an example of linear variation (it is the equation of a straight line that does not pass through the origin)

c) y = 15/x => y*x = 15 = constant which is the characteristic of an inverse relation

d) y = x/15 is an example of an inverse relation, with proportion constant = 1/15 
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3 years ago
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Question 1. Enter the ratio equivalent to sin(B)
Deffense [45]

Answer:

The three questions about the given triangle has been answered below.

Step-by-step explanation:

We are given a right angled triangle whose sides are of length 20, 21 and 29.

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              = \frac{21}{29}

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<u>(2)</u> sin(A) = \frac{20}{29}

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<u>(3)</u> We suppose that cosA < sinA and we haveto find which all angles will satisfy this condition.For this the angle A should be greater than 45°.

From the given options the angles that satisfy this are 55 , 66 and 75.

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What is the y-intercept of y= -3x
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Answer:

(0,0) is the y intercept

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Answer:

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Given :    W=4000    m=?        h=20 m                      

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Power required         P=  W/t   =  w/p = 120000/120 =1000 watts    We divide 60/5 = 120 then divide by 10 = 12 (being g)

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