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elixir [45]
3 years ago
6

help me out here please- i need this grade badly. i just need a little help. it’s all i’m asking. thank you so much if you help.

it’s greatly appreciated by me and my parents.

Mathematics
1 answer:
NARA [144]3 years ago
5 0

Answer:

a) line

Step-by-step explanation:

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Solve the following triangle in which given sides are<br> a=7 b=7 c=9
blagie [28]
We have an isosceles triangle;
A=opposite angle side a.
B=opposite angle side b.
C=opposite angle side c.

A=B
Method 1:

We can divide the isosceles triangle in two right triangles,
hypotenuse=7
side=9/2=4.5

B=A=arccossine (4.5/7)=49.994799...º≈50º
C/2=90º-50º=40º  ⇒ C=2*40º=80º

Answer:
a=7;  A=50º
b=7;  B=50º
<span>c=9;  C=80º

Method 2:
Law of cosines:
a²=b²+c²-2bcCosA  ⇒CosA=(a²-b²-c²)/(-2bc)
CosA=(49-49-81) / (-126)=0.642857
A=arco cos (81/126)≈50º

B=A=50º

A+B+C=180º
50º+50º+C=180º
C=180º-100º
C=80º

Answer:

</span>a=7;  A=50º
b=7;  B=50º
<span>c=9;  C=80º</span>

8 0
3 years ago
Dave is painting a wall in his living room a bright red color. so far, he has painted 1/5 of the wall and has used 1/2 gallon of
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6 0
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99 POINTS
yan [13]

Answer:

the function given f(x)=x^3

for 4 units up, just add 4 as a constant

4 units up means, every old value will now be 4 more than previous value. at x=0, y=0 in the transformed curse it should x=0 and y=4, so just add it.

f(x)=x^3+4

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each old value of y should now occur 6 units before the old value of x i.e. X=x+6

for example, the point (0,0) should occur at (-6,0) in the transformed graph,

hence, f(x)=(x+6)^3

so the final curve is

f(x)=(x+6)^3+4

3 0
3 years ago
I have homework and i dont understand it its called "Solving Systems of Equations by Elimination." The problem im stuck on is
Goshia [24]
8x + y = -16 ;
3x  - y  = 5 ;
____________(+)
11x      = -11;
x = - 11 / 11 ;
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-(3x + y) + 2(x – 4y)?​
mylen [45]
22 is the correct answer
4 0
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