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Assoli18 [71]
3 years ago
15

A circle with radius of 5 is dilated by a scale factor of 2. What is the area of the image?

Mathematics
1 answer:
Tanya [424]3 years ago
7 0

Answer: 100pi

Step-by-step explanation:

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Complete the expressions that would make them a perfect square trinomial.
kirza4 [7]

Answer:

a) 16

b) 100

c) 64

d) \frac{81}{4}[/tex]

Step-by-step explanation:

Perfect square trinomial:

A perfect square trinomial has the following format:

(x \pm a)^2 = x^2 \pm 2ax + a^2

a.

x² – 8x

x^2 - 8x = x^2 - 2ax

So 2a = 8, a = 4. Then

a^2 = 4^2 = 16

The perfect square trinomial is x^2 - 8x + 16

b. x2 + 20x +

2a = 20, so a = 10

a^2 = 10^2 = 100

The perfect square trinomial is x^2 + 20x + 100

C.

x² – 16x +

2a = -16, so a = -8.

a^2 = (-8)^2 = 64

The perfect square trinomial is x^2 - 16x + 64

d. x2 + 9x +

2a = 9, so a = \frac{9}{2}

a^2 = (\frac{9}{2})^2 = \frac{81}{4}

The perfect square trinomial is x^2 + 9x + \frac{81}{4}[/tex]

6 0
3 years ago
What's the LATEX symbol for the closed surface integral?
leonid [27]
\oint
\oint is what you're looking for
3 0
3 years ago
I need to pass this but I just need help on the percentage
Tcecarenko [31]

Answer:

38%

Step-by-step explanation:

$600 is 100%

$60 is 10%

$6 is 1%

3 60s go into 228 with 48 still left.

6 times 8 is 48.

So its 38%.

6 0
3 years ago
The sum of five consecutive numbers is 700, what is the first number?
Feliz [49]

Answer:

The first number is 138.

Step-by-step explanation:

Let the first number be <em>x.</em>

<em />

Then since they are consecutive numbers, the second number will be (<em>x</em> + 1), the third (<em>x</em> + 2), the fourth (<em>x</em> + 3) and the fifth being (<em>x</em> + 4).

We are given that their sum is 700. Therefore:

x+(x+1)+(x+2)+(x+3)+(x+4)=700

Solve for <em>x</em>. Combine like terms:

5x+10=700

Subtract 10 from both sides:

5x=690

Divide both sides by five. Therefore:

x=138

The first number is 138.

5 0
3 years ago
Read 2 more answers
I’m really bad at math can someone help me?(this is due today!)
dangina [55]
Okay i believe the first one is 4/7 and the second one is 2. also don’t listen to them. sometimes it can be hard and you start to stress. good luck and if this isn’t right i’m so sorry :) keep your head up!!!
6 0
3 years ago
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