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3 years ago

Please Help Me I Am Stuck On This Question

Mathematics

2 answers:

stealth61 [152]3 years ago

7 0

Answer:

A = 4.6

B = 3.15

C = 4.05

D = 3.50

Strike441 [17]3 years ago

4 0

A is 4.5 b is 3.2 c is 4.05 d 3.6

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Help with this problem

erastova [34]

60% is your answer. Good luck!!

7 0

3 years ago

Which is the equation of a hyperbola centered at the origin with x-intercept +\- 3 and asymptote y=2x

Radda [10]

Answer:

${\dfrac{x^{2}}{9} - \dfrac{y^{2}}{36} = 1}$

Step-by-step explanation:

The hyperbola has x-intercepts, so it has a horizontal transverse axis.

The standard form of the equation of a hyperbola with a horizontal transverse axis is $\dfrac{(x - h)^{2}}{a^{2}} - \dfrac{(y - k)^{2}}{b^{2}} = 1$

The center is at (h,k).

The distance between the vertices is 2a.

The equations of the asymptotes are $y = k \pm \dfrac{b}{a}(x - h)$

1. Calculate h and k. The hyperbola is symmetric about the origin, so

h = 0 and k = 0

2. For 'a': 2a = x₂ - x₁ = 3 - (-3) = 3 + 3 = 6

a = 6/2 = 3

3. For 'b': The equation for the asymptote with the positive slope is

$y = k + \dfrac{b}{a}(x - h) = \dfrac{b}{a}x$

Thus, asymptote has the slope of

$\begin{array}{rcl}m& =& \dfrac{b}{a}\\\\2& =& \dfrac{b}{3}\\\\b& =& \mathbf{6}\end{array}$

4. The equation of the hyperbola is

$\large \boxed{\mathbf{\dfrac{x^{2}}{9} - \dfrac{y^{2}}{36} = 1}}$

The attachment below represents your hyperbola with x-intercepts at ±3 and asymptotes with slope ±2.

7 0

3 years ago

The equation of a line parallel to 2x−y+4=0 that passes through the point ( -1, 5) is ___?

IrinaK [193]

Answer:

y=2x+7

Step-by-step explanation:

2x−y+4=0

y=2x+4

m=2

Line are parallel, so their slope is the same.

A(-1,5)... x1 =-1,y1 =5

y-y1 =m(x-x1)

y1 - 5=2(x-(-1))

y1 - 5=2(x+1)

y1-5=2x+2

y=2x+2+5

y=2x+7

3 0

3 years ago

Read 2 more answers

In a certain class 40% of the students are girls; and 20% of the girls wear glasses, what percentage of the children in the clas

dem82 [27]

<span>For example
let there be 100 students

so the number of girls=40
20% of girls=20%of40=20*40/100=8 wear glasses
Which means 8 out of 100 students wear glasses
So 8%students wear glasses</span>

7 0

3 years ago

Solve for c.<br> a(c + b) =d

dsp73

Step-by-step explanation:

1. Divide each term by "a," and simplify.

c + b = d/a

2. Subtract "b" from both sides of the equation.

c = d/a - b

7 0

3 years ago