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sveta [45]
3 years ago
12

Calculate the new area using a scale factor of 3.

Mathematics
1 answer:
Ludmilka [50]3 years ago
8 0

Answer:

315

Step-by-step explanation:

Using a scale factor of 3 basically means just multiply the length and the width by 3.

So instead of 5 * 7, we are doing 15 * 21.

15 * 21 = 315

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Find the solutions to the system of equations. Select all that apply. Y=x^2-1 y=2x-2
Sliva [168]

Answer:

Option C (1, 0)

Step-by-step explanation:

We have a system with the following equations:

y = x ^ 2-1\\\\y = 2x-2

The first equation is a parabola.

The second equation is a straight line

To solve the system, substitute the second equation in the first and solve for x.

2x-2 = x ^ 2 -1

Simplify

x ^ 2-2x + 1 = 0

You must search for two numbers that when you add them, obtain as a result -2 and multiplying both results in 1.

These numbers are -1 and -1

Therefore

x ^ 2-2x + 1= (x-1)(x-1)\\\\x ^ 2-2x + 1= (x-1)^2=0

Finally the solutions are

x = 1\\y =0

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3 years ago
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6 0
3 years ago
5. Translate into an equation. Negative seven less than the product of a
elena-s [515]

Answer:

-7-<em>x+-2=-7</em>

Step-by-step explanation:

Negative Seven Less than a product= -7-x

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this equation equals -7

the equation put together is= -7-<em>x+-2=-7</em>

<em />

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4 0
3 years ago
Can somebody answer these 2 questions
AnnZ [28]

Answer:

2. 12.08

3. 7.74

Step-by-step explanation:

a squared + b squared = c squared

2. 5 squared = 25, 11 squared = 121, 25 + 121 = 146, the squre root of 146 is 12.08

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3 years ago
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