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Vaselesa [24]
3 years ago
10

Help me with this plesse​

Mathematics
1 answer:
STALIN [3.7K]3 years ago
3 0
Can you take a better picture and I will help?
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Somebody help me out
forsale [732]

Answer:

7.8(tan 67)

Step-by-step explanation:

7.8(tan 67)

= 18.4 (2 decimal place)

3 0
2 years ago
Read 2 more answers
Help, please!!! I will mark brainlisit
Marina86 [1]

Answer:

I beleve the answer is 112/350  and x/100

I'm not sure how to find the percent (sorry) but I hope this helps :)

7 0
2 years ago
6x + 4y = -14<br> -X-5y=11
kumpel [21]

Answer:

x= -1; y= -2

Step-by-step explanation:

A:   6x+4y= -14  

B:  -x-5y=11

6B is :  -6x-30y=66

A+6B is :  -26y=52

so   y= -2

so A becomes :  6x+4.(-2)= -14

so x= -1

4 0
3 years ago
Find the standard form of the circle x2 + y2 – 6x + 10y + 24 = 0 by completing the square.
hichkok12 [17]

Answer:

(x-3)^2+ (y+5)^2=10

Step-by-step explanation:

Given the equation of the circle: x^2 + y^2 - 6x + 10y + 24 = 0

We wish to express it in a Standard form:

We begin by re-arranging:

x^2 - 6x + y^2  + 10y  = - 24

Next, divide the coefficient of x by 2, square it and add it to both sides.

Do the same for y.

x^2 - 6x +(-3)^2+ y^2  + 10y+5^2  = - 24+(-3)^2+5^2

Next, we factorize

(x-3)^2+ (y+5)^2  = - 24+9+25\\(x-3)^2+ (y+5)^2=10

This is the standard form.

6 0
3 years ago
Solve 2x2 + 12x - 14 = 0 by completing the square
vovangra [49]

Answer:

<h2>x = -7 or x = 1</h2>

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\qquad(*)\\\\\\2x^2+12x-14=0\qquad\text{divide both sides by 2}\\\\x^2+6x-7=0\qquad\text{add 7 to both sides}\\\\x^2+2(x)(3)=7\qquad\text{add}\ 3^2=9\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=7+9\\\\(x+3)^2=16\Rightarrow x+3=\pm\sqrt{16}\\\\x+3=-4\ or\ x+3=4\qquad\text{subtract 3 from both sides}\\\\x=-7\ or\ x=1

5 0
3 years ago
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