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3 years ago

PLEASE HELP! BRINLIEST IF CORRECT.Solve for n. −56n=40

Mathematics

2 answers:

Lapatulllka [165]3 years ago

8 0

The awnser to your question is, -48

mart [117]3 years ago

8 0

The correct answer is b. -48

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Which of the following is the graph of f(x) = cos(x+ +32

Anit [1.1K]

Answer:

Step-by-step explanation:

pi / 2 is equal to 180°/2 which is 90°.

Cos (90°) = 0

if cos90 = 0 then what kind of graph will we have at 90° to the x axis ?

a graph passing through the origin. (0,0)

7 0

3 years ago

I need this please help me

alexandr402 [8]

Top one is “equal to”
Middle one is “longer than”
Lowest one is “will”

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3 years ago

Derivatives concept: Exercises using the definition of derivatives: (Full development)

krok68 [10]

(A) f(x) = 7 is constant, so f(x + h) = 7, too, which makes f(x + h) - f(x) = 0. So f'(x) = 0.

(B) f(x) = 5x + 1 ==> f(x + h) = 5 (x + h) + 1 = 5x + 5h + 1

==> f(x + h) - f(x) = 5h

Then

$\displaystyle f'(x) = \lim_{h\to0}\frac{5h}h = \lim_{h\to0}5 = 5$

(C) f(x) = x ² + 3 ==> f(x + h) = (x + h)² + 3 = x ² + 2xh + h ² + 3

==> f(x + h) - f(x) = 2xh + h ²

$\implies\displaystyle f'(x) = \lim_{h\to0}\frac{2xh+h^2}h = \lim_{h\to0}(2x+h) = 2x$

(D) f(x) = x ² + 4x - 1 ==> f(x + h) = (x + h)² + 4 (x + h) - 1 = x ² + 2xh + h ² + 4x + 4h - 1

==> f(x + h) - f(x) = 2xh + h ² + 4h

$\implies \displaystyle f'(x) = \lim_{h\to0}\frac{2xh+h^2+4h}h = \lim_{h\to0}(2x+h+4) = 2x+4$

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3 years ago

Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida

Morgarella [4.7K]

Answer:

Gasto en postre= $75

Step-by-step explanation:

Dada la siguiente información:

Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida.

Para calcular la cantidad a gastar en el postre, debemos usar la siguiente formula:

Gasto en postre= presupuesto total*porcentaje para postre

Gasto en postre= 500*0.15

Gasto en postre= $75

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3 years ago

About how many miles are in 16,300 ft

Studentka2010 [4]

About 3, because there are 5280 feet in a mile, so 2 miles would be 10560, and 3 would be 15840, and that is the closest you will get, because the 4th miles would be 21120.

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3 years ago