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2 years ago

Find the value of X

Mathematics

2 answers:

emmasim [6.3K]2 years ago

7 0

Answer: 20 i think srry if its wrong

Step-by-step explanation:

HACTEHA [7]2 years ago

6 0

Answer:

x = -1

Step-by-step explanation:

<u>To solve this type of mathematical problem, you need to set up an equation.</u>

Since AB = 5 and BC = 2x + 6, AC must = 2x + 6 + 5.

AC is also given another equivalent value, x + 10. That means an equation is given to solve for x:

2x + 6 + 5 = x + 10

<u>Time for solving!</u>

2x + 6 + 5 = x + 10 First, bring x to one side by subtracting x on both sides.

x + 6 + 5 = 10 Now, simplify the equation to make it more readable.

x + 11 = 10 Lastly, isolate x by subtracting 11 from both sides.

x = -1

The value of x is -1

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A parabola has a focus of F(8.5,−4) and a directrix of x=9.5.

HACTEHA [7]

Answer:

$-\frac{1}{2}y^2-4y+1=x$

Step-by-step explanation:

A parabola has a focus of F(8.5,−4) and a directrix of x=9.5.

General form of horizontal parabola is

$(y-k)^2=4p(x-h)$

the distance between directrix and focus is the value of p

so p = 8.5 - 9.5 = -0.5

Focus is (h+p , k), given focus is (8.5, -4)

So k = -4 and h+p = 8.5

we know p = -0.5

h +p = 8.5

h - 0.5 = 8.5

so h= 9 and k = -4

vertex is (h,k) that is (9, -4)

Now plug in the value in the general equation

$(y-k)^2=4p(x-h)$ , k= -4, h= 9 , p = -0.5

$(y+4)^2=4(-0.5)(x-9)$

$(y+4)^2=-2(x-9)$

$y^2+8y+16=-2x+18$

subtract 18 on both sides

$y^2+8y-2=-2x$

Divide whole equation by -2

$-\frac{1}{2}y^2-4y+1=x$

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3 years ago

Arthur purchased a 2010 model sedan for $20,000. The dealership offered

JulsSmile [24]

Answer: the answer is $ 17,349.21 APEX

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2 years ago

Jeff typed a 5-page term paper with 600 words per page. He typed an average of 40 words per minute. If he started typing at 8:15

Leno4ka [110]

Answer:

If Jeff is types 5 pages at 600 words per page, then he types 3,000 words (5 x 600).

So, if Jeff started typing at 8:15 am, he'd finish at 9:30 am.

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

I need help plz help

amid [387]

We know

$\boxed{\sf cos\Theta=\dfrac{b}{h}}$

$\\ \sf\longmapsto cos22=\dfrac{x}{47}$

$\\ \sf\longmapsto 0.9=\dfrac{x}{47}$

$\\ \sf\longmapsto x=47(0.9)$

$\\ \sf\longmapsto x=42.3$

7 0

3 years ago

Need help please, also about probabilities

liberstina [14]

Answer:

Step-by-step explanation:

Good evening ,

_______________

a) p(rat)=1-(0,35+0,4+0,1)

b) p(cat ∪ hamster)=0,35+0,1

c) p(dog then dog)= (0,4)²

8 0

2 years ago