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3 years ago

Identify the center and radius of a circle with equation (x-5)^2+(x+3)^2=25

1 answer:

4 0

$\bf (x-5)^2+(x+3)^2=25\implies (x-5)^2+[x-(-3)]^2=5^2\\\\
-----------------------------\\\\
\textit{equation of a circle}\\\\
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad center\ ({{ h}},{{ k}})\qquad
radius={{ r}}$

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A truck can be rented from Company A for $130 a day plus $0.40 per mile. Company B charges $70 a day plus $0.60 per mile to

almond37 [142]

Answer:

You have to use the equation 130+.40x and 70+.60x just replace x with any number, but the answer to each equation must be the same.

Step-by-step explanation:

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3 years ago

Read 2 more answers

Need help quickly! Thanks

Rzqust [24]

Answer:

y = $-2^x$

Step-by-step explanation:

If the equation of a function is in the form of y = h(x)

When the graph of this function is reflected across x-axis,

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y = -h(x)

Further reflected across y-axis, then the transformed function will be,

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By this rule,

Given equation when reflected across x-axis,

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3 years ago

Compute the value of the discriminant and give the number of real solutions of the quadratic equation.

Sergio039 [100]

$-2x^2+6x-3=0 \\ \\
a=-2 \\ b=6 \\ c=-3 \\ \Delta=b^2-4ac=6^2-4 \times (-2) \times (-3)=36-24=12$

The value of the discriminant is 12.
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3 years ago

What is a 2c − 5b − c a − b simplified?

timama [110]

All you have to do is combine like terms. 2c and (-c) are like terms (-5b) and (-b) are like terms and a is a term. So, 2c combined with (-c) is C. (-5b) and (-b) combined is (-6b). Since a doesnt need to be combined with anything, you leave it as it is so your answer will then be c - 6b + a (this is the answer assuming that there is a + in front of the a. If there is a - sign, then just change your +a to -a at the end

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3 years ago

Please put a serious answer

aksik [14]

Answer:

x=12

Step-by-step explanation:

9x-14=2(3x+11)

9x-14=6x+22

9x-6x=22+14

3x=36

x=36/3=12

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3 years ago