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AlladinOne [14]
2 years ago
12

F(x)=-5x^2+2x-1. Find: f(-a)

Mathematics
2 answers:
taurus [48]2 years ago
8 0

Answer:

<h2><em>ᎪꪀsωꫀᏒ</em></h2>

➪h(5h+10x-2)

Step-by-step explanation:

hope it's helpful to you ☺️

lyudmila [28]2 years ago
4 0

Answer:

f(x) = 5 {x}^{2}  + 2x - 1 \\ f( - a) = 5 {( - a)}^{2}  + 2 \times  - a - 1  \\  = 5 {a}^{2}   - 2a - 1 \\ thank \: you

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What is the equation of the line that passes through the point (-1, -3) and has a slope of -5?
spin [16.1K]

Answer:

<h2>A) y = -5x - 8</h2>

Step-by-step explanation:

The point-slope form of an equation of a line:

y-y_1=m(x-x_1)

m - slope

(x₁, y₁) - point on a line

We have the slope m = -5, and the point (-1, -3). Substitute:

y-(-3)=-5(x-(-1))\\\\y+3=-5(x+1)

Convert to the slope-intercept form (y = mx + b):

y+3=-5(x+1)          <em>use the distributive property</em>

y+3=-5x-5            <em>subtract 3 from both sides</em>

y=-5x-8

7 0
3 years ago
Find the nth term, a n, of the given arithmetic sequence. a^1 = 75, d = –8, n = 11
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An = a1+d*(n-1)
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4 0
3 years ago
Write the equation of a circle with a center at (6, 7) and a diameter of 4.
posledela

Answer:

(x - 6)² + (y - 7)² = 4

Step-by-step explanation:

Equation of circle: (x - h)² + (y - k)² = r²

Given center(h,k) = (6,7)

h = 6

k = 7

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radius, r = \frac{4}{2} = 2

(x - h)² + (y - k)² = r²

(x - 6)² + (y - 7)² = 2²

(x - 6)² + (y - 7)² = 4


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2 years ago
Which letter has rotational symmetry? Answer Choices: 1. B 2. R 3. J 4. I
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The answer is 4. I but it has to be capital
8 0
3 years ago
A colony of bacteria is growing exponentially according to the function below, where t is in hours. About how many hours will it
Ivenika [448]
The function is:
B ( t ) = 4 * e^(0.8 t)
4 * e^(0.8 t) = 400
e^(0.8 t) = 400: 4
e^(0.8 t) = 100   / ln
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0.8 t = 4.6
t = 4.6 : 0.8 = 5.76 ≈ 6
Answer:
D ) 6 hours.
4 0
3 years ago
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