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3 years ago

After how many hours is the battery power at 75% if the battery decreases by 20% per hour

Mathematics

1 answer:

Lady_Fox [76]3 years ago

7 0

Answer:2.5

Step-by-step explanation:

Answer:

If the battery starts completely charged then after one hour it will be at 80% so at two hours it will be at 60. and there is 60 minutes in one hour so it goes down 10% in 30 minutes so it goes down 5% in 15 so it goes down 2.5% in 7.5

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The local hamburger restaurant is famous for how quickly they can assemble a burger. The restaurant advertises that its constant

melisa1 [442]

The gievn equation is ,

$t=11.3h\ldots(1)$

where t is the time in seconds and h is the no.of hamburgers assembled.

put h = 2 in equation (1).

$\begin{gathered} t=11.3\text{ (2)} \\ t=22.6 \end{gathered}$

blank A assembles 2 hamburges in 22.6 seconds.

put h = 3 in equation (1)

$\begin{gathered} t=11.3(3) \\ t=33.9 \end{gathered}$

blank B assembles 3 hamburgers in 33.9 seconds.

put h = 5 in equation (1)

$\begin{gathered} t=11.3(5) \\ t=56.5 \end{gathered}$

blank C assembles 5 hamburgers in 56.5 seconds.

put h = 8 in equation (1)

$\begin{gathered} t=11.3(8) \\ t=90.4 \end{gathered}$

blank D assembles 8 hamburgers in 90.4 seconds.

3 0

8 months ago

What is an equation of a line that passes through the point of (-8 2) and (-4,-3)

Alex_Xolod [135]

Answer:

Step-by-step explanation:

$(-8,2)=(x_1 ,y_1)\\(-4 ,-3) = (x_2 ,y_2)\\\\\frac{y-y_1}{x-x_1} = \frac{y_2-y_1}{x_2-x_1}\\ \\\frac{y-2}{x-(-8)}= \frac{-3-2}{-4-(-8)}\\ \\\frac{y-2}{x+8}= \frac{-5}{-4+8} \\ \\\\\frac{y-2}{x+8} = \frac{-5}{4}\\ \\Cross\:Multiply \\4(y-2) = -5(x+8)\\\\4y-8 =- 5x-40\\\\4y = -5x-40+8\\\\4y =- 5x-32\\\\\frac{4y}{4} = \frac{-5x}{4} + \frac{-32}{4} \\\\y = -\frac{5}{4}x-8$

3 0

2 years ago

A store sells bouquets of fruits for $10 a bouquet. The daily cost to produce x bouquets of fruits is defined by the function f(

devlian [24]

Answer:

5 or C

Step-by-step explanation:

when you plug in 5, you get -24 as the cost. Then you take that number with the amount of money you make selling 5 flowers and that would be $50 since they are $10/per bouquet. Then when you subtract you get a positive profit of $26.

3 0

3 years ago

Read 2 more answers

Pls fast I need help plsssss

Ivahew [28]

Answer:

ok so u know that all triangles in the inside are equal to 180

Step-by-step explanation:

1. 180-162= 18 angle a is 18, now to solve for b 180-122-18=40, angle b is 40

2.180-171=9 angle a is 9, now to solve for b 180-128-9=43, angle b is 43

3.180-35-22=132 angle c is 132, now to solve for angle d 180-22=158, angle d is 158

4. 180-20-29=131 angle c is 131, now to solve for angle d 180-20=160, angle d is 160

8 0

2 years ago

Write this statement in your own words: ∃x ∈ ℕ, y ∈ ℤ|x² = y² Rewrite this using the appropriate mathematical notation: Even num

Serga [27]

Answer:

See below.

Step-by-step explanation:

So we have:

$\exists x\in\mathbb{N},y\in\mathbb{Z}|x^2=y^2$

This can be interpreted as:

"There exists a natural number <em>x</em> and an integer <em>y</em> such that x² is equal to y²."

So we want even numbers are in the set of integers.

$\{2n:n\in\mathbb{Z}\}\in\mathbb{Z}$

This is interpreted as:

"The set of even numbers (2n such that n is an integer) is in the set of integers"

6 0

3 years ago