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ch4aika [34]
3 years ago
7

Point R(3,5) is rotated 90 degrees clockwise about the origin. What are the coordinates of R'?

Mathematics
1 answer:
maria [59]3 years ago
3 0

Answer:

(5,-3)

Step-by-step explanation:

if this is the rotation that I remember learning, it should be correct. I'm very sorry if it isn't right

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Which equation could be solved using this application of the quadratic formula?
Alex_Xolod [135]

Answer:

C. x^2 + 2x - 1 = 3

Step-by-step explanation:

The standard form of a quadratic equation is

ax^2 + bx + c = 0

We need to use the quadratic formula and the given expression to find the values of a, b, and c.

The quadratic formula is

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

Where the formula has -b, the problem has -2, so b = 2.

Now we have

ax^2 + 2x + c = 0

In the denominator, where the formula has 2a, the problem has 2(1), so a = 1.

Now we have

x^2 + 2x + c = 0

Inside the root, the quadratic formula has -4ac. the problem shows -4(1)(-4). Since we already know that a = 1, then c = -4.

Now we have

x^2 + 2x - 4 = 0

Let's look at choice A.

x^2 + 1 = 2x - 3

Subtract 2x from both sides. Add 3 to both sides.

x^2 - 2x + 4 = 0   <em>This is not it!</em>

Let's look at choice B.

x^2 - 2x - 1 = 3

Subtract 3 from both sides.

x^2 - 2x - 4 = 0     <em>This is not it!</em>

Let's look at choice C.

x^2 + 2x - 1 = 3

Subtract 3 from both sides.

x^2 + 2x - 4 = 0     <em>This is it!</em>

Answer: C. x^2 + 2x - 1 = 3

8 0
3 years ago
Please help me on this will give you brainliest
enyata [817]

Answer:

135 x 10^7

Step-by-step explanation:

27(5 x 10^7)

probably check before turning in

7 0
3 years ago
The value of $y$ varies inversely as $\sqrt x$ and when $x=2$, $y=4$. What is $x$ when $y=1$?
Dovator [93]
$x=3$ I think that’s it... try that
4 0
3 years ago
X(5)+2=244<br>help pls<br>(^_^)​
arsen [322]

Simplify both sides of the equation

  • 5x+2=244

Subtract 2 from both sides

  • 5x+2−2=244−2
  • 5x=242

Divide both sides by 5

\frac{5x}{5}  =  \frac{242}{5}

  • Answer

\: x =  \dfrac{242}{5}

OR

\: x =  48.4

6 0
2 years ago
Read 2 more answers
John wants to know the volume of his gold ring in cubic centimeters. He gets a glass in the shape of a rectangular prism with a
const2013 [10]
If you go to sc and slide to filter you’ll find one that solves the problem
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3 years ago
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