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2 years ago

I only need 2 more answers and I will be done.

Mathematics

2 answers:

astraxan [27]2 years ago

7 0

Answer:

Step-by-step explanation:

First find the value for $\frac{x}{3}$

$-5.5+7.5=\frac{x}{3}=2=\frac{2}{1}$

Then figure out what x is like this

$\frac{2}{1}=\frac{x}{3}$

Since the denominator (the bottom number) was multiplied by three we can multiply the numerator (the top number) by three so

$\frac{2}{1}=\frac{6}{3}$

BlackZzzverrR [31]2 years ago

6 0

Answer: B) 6

Step-by-step explanation:

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3 years ago

10 POINTS! PLEASE HELP!! The illustration shows a compact disc tray that holds five CDs. The radius of each compact disc is 9 cm

MariettaO [177]

We can see that there are 5 CDs, each of radius 9 cm

Area occupied by 1 disc:

Area of a circle = πr²

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2 years ago

Try to find x & y. I need it so much please

kumpel [21]

Answer:

x = 3

y = 5

Step-by-step explanation:

Using theorem of similar triangles, we have,

(6 + x)/6 = (7 + 3.5)/7

(6 + x)/6 = 10.5/7

Cross multiply

7(6 + x) = 10.5(6)

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Thus:

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Cross multiply

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3 0

3 years ago

Find the standard equation of the parabola that satisfies the given conditions. Also, find the length of the latus rectum of eac

lakkis [162]

Answer:

The standard parabola

y² = -18 x +27

Length of Latus rectum = 4 a = 18

Step-by-step explanation:

Explanation:-

Given focus : (-3 ,0) ,directrix : x=6

Let P(x₁ , y₁) be the point on parabola

PM perpendicular to the the directrix L

SP² = PM²

(x₁ +3)²+(y₁-0)² = $(\frac{x_{1}-6 }{\sqrt{1} } )^{2}$

x₁²+6 x₁ +9 + y₁² = x₁²-12 x₁ +36

y₁² = -18 x₁ +36 -9

y₁² = -18 x₁ +27

The standard parabola

y² = -18 x +27

Length of Latus rectum = 4 a = 4 (18/4) = 18

5 0

3 years ago