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guajiro [1.7K]
3 years ago
15

Given f(x) = 2x² + 8x - 4 and g(x) = 5x +6, find 3f(x)

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
5 0

Answer:

You can't do this problem. sorry

Step-by-step explanation:

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7x + 1 = x + 7<br> whats the answer
Gnoma [55]

7x + 1 = x + 7

7(1) + 1 = 8

1 + 7 = 8

If you substitute 1 for x, the statement is true. Therefore, x = 1.

4 0
3 years ago
Read 2 more answers
Is a triangle with sides 7 feet, 12 feet, and 14 feet a right, acute or obtuse triangle?
tresset_1 [31]

Answer:

Acute

Step-by-step explanation:

This should be an acute triangle because if this was a right angle, then the three sides should be figured out by the Pythagorean Theorem.

An obtuse angle wouldn't be right either, you need an angle to be over 90.

7 0
2 years ago
The difference of the square of a number and 28 is equal to 3 times that number find the positive solution
lutik1710 [3]
<h2>The required positive number is 7.</h2>

Step-by-step explanation:

Let the number = x

To find, the positive number = ?

According to question,

x^{2}-28=3x

⇒ x^{2} - 3x - 28 = 0

By Factorisation method,

⇒ x^{2} - 7x + 4x - 28 = 0

⇒ x(x - 7) + 4(x - 7) = 0

⇒ (x - 7)(x + 4) = 0

⇒ x - 7 = 0 or, x + 4 = 0

⇒ x  = 7 or, x = - 4 [ - 4 is a negative number)

⇒ x  = 7

Thus, the required positive number is 7.

8 0
3 years ago
Subtract: (x2 − 8x + 5) − (−3x2 + 5x − 9) help me please.
kicyunya [14]
The answer is 4x^2-13x+14
8 0
3 years ago
Caden removed the label of a soup can like the one shown. What is the approximate area of the label if the can is 4 inches high
Dominik [7]

EXPLANATION

If the height of the can is 4 inches and the diameter is 3--> radius=1.5 inches, the area is given by the following relationhip:

\text{Area}_{\text{label}}=2\pi rh

Replacing terms:

\text{Area}_{\text{label}}=2\pi\cdot1.5\cdot4=12\pi=37.7in^2

The approximate area is 37.7 in^2

5 0
1 year ago
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