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2 years ago

You want to rent a power washer to

Mathematics

1 answer:

iris [78.8K]2 years ago

7 0

23 + 12x <= 75

12x <= 52

if you want an integer, answer is 4 hours

if fractions of an hour are allowed than the answer is 4 and 1 / 3 or 13 / 3

please give brainliest

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Please help me, it's a multi-step problem

Vika [28.1K]

Answer:

The first part is B= -2t + 95.

Step-by-step explanation:

Every hour the battery drops by 2 so the equation is

current battery charge= (time)(-2)+(starting battery charge)

3 0

2 years ago

Alex17521 [72]

Answer:

hope this helps you

6 0

3 years ago

Through (-1,-1), slope of 4 what is the standard form equation of the line through the given point with a given slope

Vinvika [58]

Answer:

The equation of the line is -4x + y = 3

Step-by-step explanation:

Since we have the slope, we can use it and either point in point-slope form and solve for the standard form of the equation.

y - y1 = m(x - x1)

y - -1 = 4(x - -1)

y + 1 = 4(x + 1)

y + 1 = 4x + 4

-4x + y + 1 = 4

-4x + y = 3

3 0

3 years ago

Mary baked 21 cookies on saturday and twice that many on sunday for a school fundraiser. 4 cookies fell on the ground and had to

nika2105 [10]

21+21= 42 cookies minus 4 = 38 cookies
38/3= 12.66(round down to 12)
She made 12 bags with 3 in Each which is 36, so 2 were left over

3 0

2 years ago

Simplify (1-cos theta)(1+cos theta) over (1-sin theta) (1+ sin theta)

slega [8]

$\bf sin^2(\theta)+cos^2(\theta)=1\to 
\begin{cases}
cos^2(\theta)=1-sin^2(\theta)\\
sin^2(\theta)=1-cos^2(\theta)
\end{cases} \\\\
-------------------------------\\\\
\stackrel{\textit{difference of squares}}{\cfrac{[1-cos(\theta )][1+cos(\theta )]}{[1-sin(\theta )][1+sin(\theta )]}}\implies \cfrac{1^2-cos^2(\theta )}{1^2-sin^2(\theta )}\implies \cfrac{1-cos^2(\theta )}{1-sin^2(\theta )}
\\\\\\
\cfrac{sin^2(\theta )}{cos^2(\theta )}\implies tan^2(\theta )$

4 0

3 years ago