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lbvjy [14]
3 years ago
11

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

Mathematics
1 answer:
WITCHER [35]3 years ago
5 0
<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0, 
</span><span>kf(x) = -x², a= -1<0  
so the answer is </span><span>B.kf(x) </span><span>

</span>
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Need help with this??? Please!!!
Radda [10]

Answer:

the first option

Step-by-step explanation:

(f-g)(x) simply means to subtract both expressions. really literally.

and we go through it power by power of x.

the highest power/exponent of x is 3 (x³). only f(x) has one.

so, -7x³ is the first part of f-g.

next is x².

11x² - 6x² = 5x², which is the second part of f-g.

next is x.

-8x - (-14x) = -8x + 14x = 6x, which is the third part of f-g.

next is x⁰ (in other words, no x, just a constant).

4 - (-3) = 4 + 3 = 7, which is the 4th part of f-g.

we have no x to the power of -1 or -2, so we have -3

0 - (-4x‐³) = 4x‐³, which is the last part of f-g.

so, it is clearly the first answer option.

3 0
3 years ago
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Gala2k [10]

Answer:

How much the tree grew a week

Step-by-step explanation:

8 0
3 years ago
Suppose that a large number of samples are taken from a population. Which of the following sample sizes will be most likely to r
Montano1993 [528]

If you use a large enough statistical sample size, you can apply the Central Limit Theorem (CLT) to a sample proportion for categorical data to find its sampling distribution. The population proportion, p, is the proportion of individuals in the population who have a certain characteristic of interest (for example, the proportion of all Americans who are registered voters, or the proportion of all teenagers who own cellphones). The sample proportion, denoted

6 0
3 years ago
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Toniac 123 can you please help me with these questions. They are part of of the question you answered. There is another question
uranmaximum [27]
5/12+5/12=10/12
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8 0
3 years ago
A circular mirror is surrounded by a square metal frame. The radius mirror is 6x the side length of the medal frame is 18x. What
wolverine [178]

Answer:

Step-by-step explanation:

Given:

Radius of circular mirror, r = 6x

Length of metal frame, l = 18x

Area of square, As = l^2

Area of square = 18x × 18x

= 324 x^2.

Area of circular mirror, Ac = pi × r^2

= π × (6x)^2

= 36π x^2.

The expression for the area of the frame is subtracting the mirror from the metal frame = As - Ac

= 324x^2 - 36πx^2

= 36x2 (9 - π).

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3 years ago
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