3 years ago

98 POINTS AND BRAINLIEST ANSWER!!!

Mathematics

2 answers:

VladimirAG [237]3 years ago

8 0

(6^2) + (4^2)

36 + 16

Choice C

Komok [63]3 years ago

7 0

52 because 6 squared is 36, and 4 squared is 16, and add them together and you get 52.

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tanya purchased 4 hamners for $11.00 each and 7 scewdrivers for $6.65 each write an expresion for the total cost of the tools.th

rewona [7]

X=numbers of hammers
y=numbers of scewdrivers
f(x,y)= total cost in $

f(x,y)=11x+6.65y

f(4,7)=4(11)+6.65(7)=44+46.55=90.55

Sol: an expresion for the total cost of the tools is f(x,y)=11x+6.65 y;
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y= number of scewdrivers.
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marysya [2.9K]

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2 years ago

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igor_vitrenko [27]

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3 years ago

-x^2+4x-8 <br>axis of symmerty

V125BC [204]

Answer:

$\boxed {\boxed {\sf x=2}}$

Step-by-step explanation:

The axis of symmetry can be calculated using the formula:

$x=\frac{-b}{2a}$

First we must determine a and b from the quadratic: $-x^2+4x-8$ . This is in standard form, with the highest power first in descending order.

Standard form is also: $ax^2+bx+c$

If we compare this to the quadratic given, we can conclude that:

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Substitute the values for a and b into the formula.

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Multiply in the denominator.

$x=\frac {-4}{-2}$

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This can also be determined from the graph. It is the x-coordinate of the vertex or the maximum/minimum. It divides the quadratic into 2 symmetrical halves.

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3 years ago