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Vinil7 [7]
2 years ago
14

Which expression is equivalent to -2-7?

Mathematics
2 answers:
quester [9]2 years ago
3 0

Answer:7

Step-by-step explanation:

just because

Katarina [22]2 years ago
3 0
-9
Explaination
(-2)-7 = -9
-7+2 = -9
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If a= (-1,-3) and b= (11,8), what is the length of AB?
Margarita [4]

Answer:

4.80 units (3 s.f.)

Step-by-step explanation:

distance \: formula \\  =  \sqrt{(x1 - x2)^{2}+ (y1 - y2)^{2} }

Hence, length of AB

= √(11+1)^2 - (8+3)^2

= √ 12^2 -11^2

= √ 23

= 4.80 units (3 s.f.)

6 0
3 years ago
Kini earns 9 dollars an hour at her job and her allowance is 8 dollars per week. Duke earns 7.50 dollars an hour and his allowan
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Answer:

Step-by-step explanation:

y = 9x + 8

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3 years ago
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Answer:4

Step-by-step explanation:

4 0
3 years ago
Use the quadratic formula to solve the equation.<br> x^2 – 7x – 6 = 0<br><br> Show work please.
victus00 [196]

Answer:

The standard form of quadratic equation ax^2+bx+c = 0, then the values of x which are the solutions of the equation are given by:

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.

Given the equation: x^2-7x-6=0

Here, a=1 , b= -7 and c = -6.

then, the solution of the given equation given by:

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Substitute the values of a, b and c in above we get;

x=\frac{-(-7)\pm\sqrt{(-7)^2-4(1)(-6)}}{2(1)} or

x=\frac{7\pm\sqrt{49+24}}{2} =\frac{7\pm\sqrt{73}}{2}

then,

the solutions of the given equation are;

x=\frac{7+\sqrt{73}}{2} , \frac{7-\sqrt{73}}{2}.




​


4 0
3 years ago
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What equation matches the graph?
Naddik [55]

Answer:

Answer choice B.

4 0
2 years ago
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