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Licemer1 [7]
3 years ago
6

Which expression represents the product of an unknown number and 19?

Mathematics
2 answers:
Galina-37 [17]3 years ago
7 0
I would go with D. Hope that helps :)
Vesnalui [34]3 years ago
5 0
D.

19 • n

The dot (•) is an alternative for the multiplication sign (×)
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Which table shows a proportional relationship between miles traveled and gas used?
kati45 [8]
270/15 = 135/ 7.5
cross multiply to see if it is a true proportion
(15)(135) = (270)(7.5)
2025 = 2025 (correct...so this is a true proportion)

answer is : bottom right one
6 0
3 years ago
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Fill in the table using this function rule. y= 3x + 4<br><br> x- 3,6,7,8<br> y- blank
stiks02 [169]

Answer:

13, 22, 25, 28

Step-by-step explanation:

Just fill in x values as values given in equation

5 0
2 years ago
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Please help. I need a good step by step explanation
sasho [114]

Answer:

the perimeter of a square is 4a.. where (a) is one side

therefore the equation formed is

3.5x(4)=2x+54

14=2x+54

2x= -40

x= -20

5 0
3 years ago
Drag the expressions to the correct functions. Not all expressions will be used.
postnew [5]

The function composition exists an operation " ∘ " that brings two functions f and g, and has a function h = g ∘ f such that h(x) = g(f(x)).

Let the functions be f(x) = 4x² + 1 and g(x) = x² - 3

The correct answer is (f o g)(x) = 4x⁴ - 96x + 37 and

(g o f)(x) = 16x⁴ + 8x² - 2.

<h3>What is composition function?</h3>

The function composition exists an operation " ∘ " that brings two functions f and g, and has a function h = g ∘ f such that h(x) = g(f(x)). In this operation, the function g exists used for the outcome of applying the function f to x.

Given:

f(x) = 4x² + 1 and g(x) = x² - 3

a) (f o g)(x) = f[g(x)]

f[g(x)] = 4(x² - 3)² + 1

substitute the value of g(x) in the above equation, and we get

    = 4(x⁴ - 24x + 9) + 1

simplifying the above equation

    = 4x⁴ - 96x + 36 + 1

    = 4x⁴ - 96x + 37

(f o g)(x) = 4x⁴ - 96x + 37

b) (g o f)(x) = g[f(x)]

substitute the value of g(x) in the above equation, and we get

g[f(x)] = (4x² + 1)²- 3

      = 16x⁴ + 8x² + 1 - 3

simplifying the above equation

      = 16x⁴ + 8x² - 2

(g o f)(x) = 16x⁴ + 8x² - 2.

Therefore, the correct answer is (f o g)(x) = 4x⁴ - 96x + 37 and

(g o f)(x) = 16x⁴ + 8x² - 2.

To learn more about the function refer to:

brainly.com/question/26709985

#SPJ9

7 0
2 years ago
dori lives 1/4 Mile from school if she walks to and from school each day how far does Dori walk during the school week
Arturiano [62]

Answer:

7/2 miles or 3 2/4 miles

Step-by-step explanation:

5 0
2 years ago
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