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Annette [7]
3 years ago
6

Determine the number of possible triangles, ABC, that can be formed given C = 85°, a = 10, and c = 13.

Mathematics
1 answer:
MrMuchimi3 years ago
7 0
1 it’s one because I got the ensure from a friend
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PLSSSSSSSSSSS HELPPP>> Show work solve the sysytem- y=1/2x^2+4x+4 y=-4x+12 1/2
Mrac [35]

Answer:

(1, 8.5 ) and ( - 17, 80.5 )

Step-by-step explanation:

Given the 2 equations

y = \frac{1}{2} x² + 4x + 4 → (1)

y = - 4x + 12 \frac{1}{2} → (2)

Substitute (1) into (2), that is

\frac{1}{2} x² + 4x + 4 = - 4x + 12 \frac{1}{2} ( multiply through by 2 to clear the fractions )

x² + 8x + 8 = - 8x + 25 ( add 8x to both sides )

x² + 16x + 8 = 25 ( subtract 25 from both sides )

x² + 16x - 17 = 0 ← in standard form

(x + 17)(x - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 17 = 0 ⇒ x = - 17

x - 1 = 0 ⇒ x = 1

Substitute these values into either of the 2 equations and evaluate for y

Substituting into (2 )

x = 1 : y = - 4(1) + 12.5 = - 4 + 12.5 = 8.5 ⇒ (1, 8.5 )

x = - 17 : y = - 4(- 17) + 12.5 = 68 + 12.5 = 80.5 ⇒ (- 17, 80.5 )

5 0
3 years ago
ABCDEF is. regular hexagon wth O at the center.ehat kind of quadrilaterals are ABCO and ACDF?​
Kruka [31]

Answer:

Step-by-step explanation:

Is there a picture maybe?

4 0
3 years ago
Help as soon as possible
AleksAgata [21]

Answer: A. 117,600 people.

4 0
2 years ago
Read 2 more answers
Expand and simplify:<br>(x + 1)(2x - 3)<br>with the explaining the steps​
Luden [163]
<h3>Answer:  2x^2 - x - 3</h3>

====================================

Work Shown:

(x+1)(2x-3)

y(2x-3)

2xy - 3y

2x( y ) - 3( y )

2x( x+1 ) - 3( x+1 )

2x^2+2x - 3x-3

2x^2 - x - 3

Explanation:

In the second step, I replaced all of (x+1) with y. Afterward, I distributed that y term through. A few steps later, I replaced y with x+1 to help finish up the distributions. You could use the FOIL rule as an alternative approach.

8 0
3 years ago
Read 2 more answers
SUPER DUPER IMPORTANT!!! VERY URGENT!
DaniilM [7]
I think its 8cc but i could be wrong
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