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erica [24]
2 years ago
13

How to do???????????​

Mathematics
1 answer:
Stella [2.4K]2 years ago
3 0

The point (1 - √5, <em>p</em>) lies on the given curve, which means if <em>x</em> = 1 - √5, then <em>y</em> = <em>p</em>. So

<em>p</em> = (10 + 2√5) / (1 - √5)²

and now you just simplify.

(1 - √5)² = 1² - 2√5 + (√5)² = 6 - 2√5

→   <em>p</em> = (10 + 2√5) / (6 - 2√5)

Cancel the common factor of 2 among all the terms:

<em>p</em> = (2•5 + 2√5) / (2•3 - 2√5)

→   <em>p</em> = (5 + √5) / (3 - √5)

Multiply the numerator and denominator by the conjugate of the denominator:

<em>p</em> = (5 + √5) / (3 - √5) • (3 + √5) / (3 + √5)

→   <em>p</em> = ((5 + √5) (3 + √5)) / (3² - (√5)²)

→   <em>p</em> = (15 + 8√5 + (√5)²) / (3² - (√5)²)

→   <em>p</em> = (20 + 8√5) / 4

Cancel the factor of 4:

<em>p</em> = (4•5 + 4•2√5) / 4

→   <em>p</em> = 5 + 2√5

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Dorothy runs for 3.35 kilometres every day .<br> After 7 days how many meters has Dorothy ran
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Answer:

23.45 meters

Step-by-step explanation:

To solve, you do 3.35*7, which gives you 23.45

4 0
3 years ago
Is 4/13 or 6/13 greater than less than or equal too
Ymorist [56]

Answer:

Less than.

Step-by-step explanation:

Because they have the same denominator, you can ignore them and just look at the numerator. 4 < 6.

4 0
3 years ago
How long is the arc intersected by a central angle of startfraction pi over 2 endfraction radians in a circle with a radius of 4
Nimfa-mama [501]

<u>7.1 cm  long is the arc</u><u> intersected by a central angle .</u>

What is length of an arc?

  • The arc length of a circle can be calculated with the radius and central angle using the arc length formula.
  • Length of an Arc = θ × r, where θ is in radian. Length of an Arc = θ × (π/180) × r, where θ is in degree.

Given,

Central angle = π / 2

radius = 4.5 cm

we apply formula of length of arc.

length of the arc = angle ×  radius

                              = (π/2) × (4.5 cm)

Now put value of π = 3.14

length of the arc = (3.14 / 2) × (4.5) cm

                            = 7.065 cm ≈ 7.1 cm

Therefore, 7.1 cm  long is the arc intersected by a central angle .

Learn more about<u> </u> length of an arc

brainly.com/question/16991078

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7 0
1 year ago
A chef makes 15 gallons of batter for several cakes. Each cake requires ⅗ of a gallon of cake batter. How many cakes can the che
Fiesta28 [93]
The chef can make 25 cakes

Explaintion:
There is a few ways to solve this but an app say way is to
Multiply the 15 gallons by the denominator of the fraction then divide by 3
So 15x5=75
75/3=25
Therefore the chef can make 25 cakes
5 0
3 years ago
Calculate the slope of a line the -1,2 and 0,8
krok68 [10]

\bf (\stackrel{x_1}{-1}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{8}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{8}-\stackrel{y1}{2}}}{\underset{run} {\underset{x_2}{0}-\underset{x_1}{(-1)}}}\implies \cfrac{6}{0+1}\implies 6

4 0
3 years ago
Read 2 more answers
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