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antoniya [11.8K]
2 years ago
13

I just need help with my math work

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
8 0

Answer:

1. (c) 268

2. (d) above the 3rd quarter

3. (a) 210

4. (c) 240 pounds to 300 pounds

I hope this helps you

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Three correct answer is 276
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Calculate the length of each path using the law of cosines:

AB = √(8^2 + 8^2 - 2*8*8*cos(36)

AB = 4.94 ft.

XY = √(8^2 + 8^2 - 2*8*8*cos(79)

XY = 10.18 ft.

ZY = √(8^2 + 8^2 - 2*8*8*cos(65)

ZY = 8.60 ft.

XY is longer than ZY and ZY is longer than AB

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4. Solve for x in each diagram.<br> a.<br> X°<br> 108°<br> 156°
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Answer:

<h2>x = 48°</h2>

Step-by-step explanation:

<h3>108° + 24° + x° = 180°</h3><h3>132° + x° = 180°</h3><h3>x° = 180° - 132°</h3><h2>x= 48°</h2>

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2 years ago
Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,
Tresset [83]

Answer:

\boxed{y=2x^2+4x-7}

Step-by-step explanation:

Let the quadratic function be

y=ax^2+bx+c


We substitute (-4,9) into the equation to obtain;


9=a(-4)^2+b(-4)+c


\Rightarrow 9=16a-4b+c---(1)


We substitute (0,-7) to obtain;


-7=a(0)^2+b(0)^2+c


\Rightarrow c=-7---(2)


We finally substitute (1,-1) to obtain;


-1=a(1)^2+b(1)^2+c


\Rightarrow -1=a+b+c---(3)


We put equation (2) into equation (1) to get;


9=16a-4b-7


16a-4b=16


\Rightarrow 4a-b=4---(4)


\Rightarrow -1=a+b-7


\Rightarrow a+b=6---(5)


We add equation (4) and (5) to get;

4a+a=6+4



\Rightarrow 5a=10



\Rightarrow a=2


We put a=2 into equation (5) to get;


2+b=6


\Rightarrow b=6-2


\Rightarrow b=4


The reqiured quadratic function is

y=2x^2+4x-7

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2 years ago
Can someone help me fill in the proofs and statements?
Yuri [45]

Answer:

3. they are both equvilent.

4. onl makes a right angle and mnl makes an upside down right angle.

5.makes a definition.

Step-by-step explanation:


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