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Oksanka [162]
3 years ago
5

∆ABC is isosceles, AB = BC, and CH is an altitude. How long is AC, if CH = 84 cm and m∠HBC = m∠BAC +m∠BCH?

Mathematics
1 answer:
son4ous [18]3 years ago
3 0
I think I could help you
Have fun and feel free to ask me something new.
Or we can prove some properities without calculating by details

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The endpoints of CD are C(–8, 4) and D(6, –6). What are the coordinates of point P on CD such that P is the length of the line s
GalinKa [24]
If you graph the end points C and D then graph the 4 points at the end it is difficult to tell which points are on CD without a line.  
Using the endpoints find the slope (change in y/ change in x) then substitute a point in to find the intercept.  
Slope = (-6-4)/(6- -8) = -5/7
Intercept equation (-6) = -5/7 (6) + b
b = -1.71428571429
Graphing the line shows only 2 points on the line (–2.75, 0.25) and <span>(0.75, –2.25)
I am confused by the part, "</span><span>P is the length of the line segment from D".  Were you given a length P to help you determine which point.  Using the distance formula to find the length from each point to D doesn't help determine which one is best with the information you have given.  The image shows the distances I calculated and the graphed points. 
I hope this helps!</span>

5 0
3 years ago
Read 2 more answers
1/3 * 2 3 / 4 using distributive property
Greeley [361]

Answer:

1/3 (2 3/4) = 11/12

(Decimal: 0.916667)


5 0
3 years ago
Solve for x...........................
yaroslaw [1]

Answer:

Option A is correct, i.e. x = -3, x = 7.

Step-by-step explanation:

Given the equation is x² -4x -21 = 0.

We can compare it with general quadratic equation i.e. ax² +bx +c =0.

then a = 1, b = -4, c = -21.

We can use Quadratic formula as follows:-

x = ( -b ± √(b²-4ac) )/2a

x = ( +4 ± √(16-4*1*-21) )/2*1

x = ( +4 ± √(16+84) )/2

x = ( +4 ± √(100) )/2

x = ( +4 ± 10 )/2

x = (4+10)/2 or x = (4-10)/2

x = 14/2 or x = -6/2

x = 7 or x = -3

Hence, option A is correct, i.e. x = -3, x = 7.

5 0
3 years ago
Simplify 10-x(3x-4) x^2<br>a)-4x^2-x+10<br>b)-4x^2+x+10<br>c)4x^2+x10<br>d)-4x^2+4x+10
morpeh [17]

Simplify 10-x(3x-4) x^2

a)-4x^2-x+10

b)-4x^2+x+10

c)4x^2+x10

d)-4x^2+4x+10

Answer is B

hope it helps

5 0
3 years ago
What is the slope of the line that passes through the points (-4,210) and<br> (-7, -19)?
Ghella [55]
It’s the 7 and the other
6 0
2 years ago
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