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4 years ago

Katie said,"Negative numbers are integers."What was her error?

1 answer:

6 0

<span>Katie has not made an error. Negative numbers are integers, along with whole numbers. Whole numbers are the natural numbers (1, 2, 3 and so on) and 0.</span>

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Estimation: Maria and Connor are doing yard work for a neighbor. They make a total of $597.56. Since Connor works more hours th

FromTheMoon [43]

Connor made (in whole) $484.0236 moolahs

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3 years ago

Use the discriminant to describe the roots of each equation. Then select the best description.

IrinaK [193]

$\frac{-b+- \sqrt{b^{2} -4ac } }{2a}$
This is the solution of the equation, where a=1, b=-5, c=7

So the discriminant is :
b^2-4ac=25-4*7= -3
The square root of -3 is non-real, this both solutions are non-real.

3 0

3 years ago

Read 2 more answers

Find parametric equations for the path of a particle that moves along the circle x2 + (y − 3)2 = 16 in the manner described. (en

sveticcg [70]

Answer:

$x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\$

and t ∈ [0,2π]

Step-by-step explanation:

The standard equation for circle is:

$(x-h) ^2 + (y-k)^2 = r^2$

Comparing our equation with standard

$x^2 + (y-3)^2 =16$

h= 0,

k= 3

r= 4 (as in standard r², so r =√ r²)

Required:

Parametric equations of the circle

Formula:

$x = r cos(t) + h\\y= r cos(t) +k$

Putting values of r and h and k we get

$x= 4 cos(t) + 0 \\x= 4 cost(t) \\y= 4 sin(t) + 3$

As we need to start the object at (4,3)

x(0) = 4 and y(0) = 3

and the period is 2π

As the rotation is starting clock wise we will invert the value of t i.e -t

$x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\$

and t ∈ [0,2π]

5 0

3 years ago

How do I do this problem?

Ber [7]

Answer:

Step-by-step explanation:

∠CFE is made up of ∠3 + ∠4; therefore,

∠3 + ∠4 = 74

∠BFD is made up of ∠2 + ∠3; therefore,

∠2 + ∠3 = 103

∠BFE is made up of ∠2 + ∠3 + ∠4; therefore,

∠2 + ∠3 + ∠4 = 136

and we are looking for the measure of ∠CFD which is ∠3.

Begin by using the fact that ∠3 + ∠4 = 74 and sub that into ∠BFE:

∠BFE = 136 and

∠2 + (∠3 + ∠4) = 136 and

∠2 + 74 = 136 so

∠2 = 62

Now use that in ∠BFD since

∠BFD = 103 and

∠2 + ∠3 = 103 and

62 + ∠3 = 103 so

∠3 = 41

6 0

4 years ago

What is the interval notation for the inequality x>5

tankabanditka [31]

It would be $(5, \infty)$ indicating we start at 5 but do NOT include 5, and we keep going onward to positive infinity.

The curved parenthesis tells us not to include the endpoint.

3 0

3 years ago