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3 years ago

Solve y=x^2-5 for x

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

7 0

Answer:

x^2 - 5 = y

x^2= y + 5

$x \: = \: \sqrt{y + 5}$

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What is 4231 divided by 13 ? Please simplify and show the original answer without simplifying .

Vinvika [58]

Simplified is 325 and not simplified is 325.561

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3 years ago

Kyle's car repair costs $1000. He has 2 coupons which could save him $80 off of $1000, or 15% off of $1000. EXPLAIN WHICH COUPON

never [62]

Answer:

Kyle would save more using his 15% off of $1000 coupon.

Explanation:

15 ÷ 100 • 1000 = 150

1000 - 150 = $850

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$850 is the amount Kyle will pay.

vs.

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2 years ago

Which equation represents a parabola that opens upward, has a minimum at x = 3, and has a line of symmetry at x = 3?

densk [106]

Answer:

$A.\ y = x^2 - 6x + 13$ is the correct answer.

Step-by-step explanation:

We know that vertex equation of a parabola is given as:

$y = a(x-h)^2+k$

where $(h,k)$ is the vertex of the parabola and

$(x,y)$ are the coordinate of points on parabola.

As per the question statement:

The parabola opens upwards that means coefficient of $x^{2}$ is positive.

Let $a = +1$

Minimum of parabola is at x = 3.

The vertex is at the minimum point of a parabola that opens upwards.

$\therefore$ $h = 3$

Putting value of a and h in the equation:

$y = 1(x-3)^2+k\\\Rightarrow y = (x-3)^2+k\\\Rightarrow y = x^2-6x+9+k$

Formula used: $(a-b)^2=a^{2} +b^{2} -2\times a \times b$

Comparing the equation formulated above with the options given we can observe that the equation formulated above is most similar to option A.

Comparing $y = x^2 - 6x + 13$ and $y = x^2-6x+9+k$

13 = 9+k

k = 4

Please refer to the graph attached.

Hence, correct option is $A.\ y = x^2 - 6x + 13$

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3 years ago

Read 2 more answers

My teacher won't help i I actually want to learn this can you please help me

Reika [66]

15 you have to do all the steps thank it this I think

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3 years ago

GEOMETRY HELP) Triangle ABC is similar to triangle PQR. <br><br><br><br> Which equation is correct?

kirill115 [55]

Hello,

We must find the corresponding points: (using angles)

A-->P
B-->Q
C-->R

AB/PQ=BC/QR=AC/PR ===> c/r=a/p=b/q

Answer C

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3 years ago

Solve y=x^2-5 for x​

Solve y=x^2-5 for x