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Sergeu [11.5K]
3 years ago
13

In a Northwest Washington County, speeding fines are determined by the formula

Mathematics
1 answer:
AlekseyPX3 years ago
3 0

The person was speeding at 93 miles per hour.

Step-by-step explanation:

  • Step 1: Given the equation to find speeding fine F = 7(s - 65) + 70
  • Step 2: Substitute given details in the equation and find s. F = $266

⇒ 266 = 7(s - 65) + 70

⇒ 266 = 7s - 455 + 70

⇒ 266 = 7s - 385

⇒ 651 = 7s

⇒ s = 651/7 = 93

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its question #2 my son and I cannot figure out how to do this other than dividing. however, when u divide 59 into 422, are you s
anyanavicka [17]
Honestly I can see an argument for 7 shelves or for 8 shelves. 

When you do the calculation; \frac{422}{59}=7.15 You get 7.15 shelves. Clearly you cannot have .15 of a shelf so the logician in me wants to say you need 8 shelves! 

But if the assignment is aimed estimation skills, (Which is what I assume is being implied by the title of the assignment), then the easier calculation of \frac{420}{60}=7 is probably what the teacher was hoping for.

You might have been accidentally been calculating \frac{59}{422} =.139. Remember division is NOT communitive! i.e.1\div2\neq2\div1.

From the image;
The first step was to see that 59 can not go into 4..resulting in the zero above the 4, multiplying 0 by 59 and subtracting 0 from 4. 

The second step begins by bringing down the 2, seeing that 59 can not go into 42..resulting in the zero above the 2, multiplying 0 by 59 and subtracting 0 from 42.

The third step begins by bringing down the 2, seeing that 59 can go into 422 7 times (I tested this on the right by a short multiplication problem)..resulting in the 7 above the 2, multiplying 7 by 59 and subtracting 413 from 42.

This process continues....

8 0
3 years ago
Read 2 more answers
If a salesperson sells 3/4 of an acre for $80,000, what was the price per square foot rounded to two decimal spaces?
Julli [10]
Now, recalling that for 1 yard, there are 3 feet, therefore  \bf \begin{array}{ll}
yards&feet\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1yd&3ft\\
(1yd)^2&(3ft)^2\\
yd^2&3^2ft^2\\
&9ft^2
\end{array}

and keeping in mind that, there are 4840 yd² in 1 acre, then 

\bf \cfrac{\quad \frac{3}{4}~\underline{acre}\quad }{80000~\$}\cdot \cfrac{4840~\underline{yd^2}}{\underline{acre}}\cdot \cfrac{9~ft^2}{\underline{yd^2}}\implies \cfrac{\frac{3}{4}\cdot4840\cdot  9~ft^2}{80000~\$}\implies \cfrac{\frac{130680}{4}}{80000}
\\\\\\
\cfrac{\frac{130680}{4}}{\frac{80000}{1}}\implies \cfrac{130680}{4}\cdot \cfrac{1}{80000}\implies \cfrac{3267}{8000}~\frac{ft^2}{\$}~\approx~ 0.408375 ~\frac{ft^2}{\$}
5 0
3 years ago
Find the zeros of f(x) =x^3+2x^2-3x
lora16 [44]

Answer: 0, 1, -3

Step-by-step explanation:

f(x) = x^3 +2x^2 -3x

f(x) = x(x^2 +2x-3)

f(x) = x(x-1)(x+3)

to find zeroes, plug into f(x) and solve for each value of x. doing this gives 0, 1, and -3

3 0
3 years ago
Please help me this is my last question!!!no scammers plz i got scammed 5 times now
MAVERICK [17]

Answer:

A)  5600 ft

B)   5600 ft

C0 More than a mile

Step-by-step explanation:

4850 * sin(60) = 5600

4 0
2 years ago
CAN SOMEONE PLEASE HELP ME??? THIS ANSWER IS NOT PROPERLY SELECTED...IT WAS CLICKED ON BY ACCIDENT...PLEASE DO NOT CHEAT OR LIE
zhannawk [14.2K]

Answer:

The answer is Option B

Step-by-step explanation:

<u>Step 1:  Find the points</u>

The leftmost point is:  <em>(-3, -1)</em>

The next point is:  <em>(-2, 2)</em>

The next point is:  <em>(1, 0)</em>

The next point is:  <em>(3, 1)</em>

The rightmost point is: <em> (4, -2)</em>

<em />

Answer:  The answer is Option B

7 0
3 years ago
Read 2 more answers
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