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2 years ago

Which system is most easily solved by graphing and why?

Mathematics

1 answer:

inn [45]2 years ago

8 0

Answer:

System A should be solved by elimination because you can easily cancel out the 3m to solve.

System B should be solved by substitution. Since the an equation for the y value is given, you can easily substitute it into the other equation.

System C should be solved by graphing. You don't have to worry about any slopes or intercepts to graph. You can graph it using only whole numbers.

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Factor the expression.<br><br> 3x + 21

Delicious77 [7]

Answer: 3 ( x + 7 )

Step-by-step explanation:

5 0

2 years ago

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Is —2x+3y=12 parallel, perpendicular, or neither

bixtya [17]

Answer:neither

Step-by-step explanation:

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2 years ago

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Which function in vertex form is equivalent to f(x) = 4 + x2 – 2x?

Alexus [3.1K]

<h3>Answer:</h3>

option A

f(x) = (x – 1)2 + 3

<h3>Step-by-step explanation:</h3>

Given in the question a function,

f(x) = 4 + x² – 2x

Step 1

f(x) = 4 + x² – 2x

here a = 1

b = -2

c = 4

Step 2

x = -b/2a

h = -(-2)/2(1)

h = 2/2

h = 1

Step 3

Find k

k = 4 + 1² – 2(1)

k = 3

Step 4

To convert a quadratic from y = ax² + bx + c form to vertex form,

y = a(x - h)²+ k

y = 1(x - 1)² + 3

y = (x - 1)² + 3

6 0

2 years ago

I need help with this problem! I'll give brainlist!

aliya0001 [1]

Step-by-step explanation:

use CAH method (Cos angle = adjacent/hypotenuse)

Given adjacent = 5

Hypotenuse = 12,

$\cos(x) = \frac{adjacent}{hypotenuse} \\ \cos(x) = \frac{5}{12} \\ x = {cos}^{ - 1} ( \frac{5}{12} ) \\ = 65.4deg(nearest \: tenth)$

4 0

2 years ago

Properties of exponents<br> Rewrite the expression in the form b^n—— (b^2)^3/7

exis [7]

Answer:

$b^{\frac{6}{7}}$ is the required expression.

Step-by-step explanation:

$(b^2)^{\frac{3}{7}}\\\\\mathrm{Apply\:exponent\:rule:\:}\left(a^b\right)^c=a^{bc},\:\quad \mathrm{\:assuming\:}a\ge 0\\\\=b^{2\cdot \frac{3}{7}}\\\\=b^{\frac{6}{7}}$

Best Regards!

3 0

2 years ago