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Katena32 [7]
3 years ago
7

Here's the questions I need help with​

Mathematics
2 answers:
Reil [10]3 years ago
6 0
The second choice than the fir2nd choice than the first choice for the second question
Thepotemich [5.8K]3 years ago
6 0

Answer:

1.

<u>1</u><u> </u><u> </u><u> </u>- <u>1</u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>= <u> </u><u>d</u><u>-</u><u>c</u>

3c 3d 3cd

2.

- <u>27</u><u> </u>

<u> </u><u> </u><u> </u> 2

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Mark dropped an object from a bridge 400 feet above the ground level with an initial velocity of 0. He knows that the gravitatio
lisabon 2012 [21]

Answer:

The first listed equation is the correct equation to solve

The correct answer is: t = 5 seconds

Step-by-step explanation:

Let me mention first that there is an error in the statement that the gravitational pull of the Earth is 16 ft/s^2. It is in fact 32 ft/s^2, and the actual equation uses half of the acceleration multiplied by the square of the variable time, so it gives as final expression :

y(t)=-16\,t^2+ 0 \,t +400

and we want to find the value/s for "t" that make this equation equal zero (when it reaches the ground and the object just touches the ground. This makes the equation we want to solve:

0=-16\,t^2+ 0 \,t +400\\16\,t^2+0\,t -400=0

which solving for "t" becomes:

16\,t^2-400 =0\\16\,t^2=400\\t^2=\frac{400}{16} \\t^2=25\\t= +/- 5\,\,sec

So we adopt the positive answer (positive time) since the negative value has no physical meaning for this problem.

That is: t = 5 seconds

6 0
3 years ago
Alana biked 45 miles in 3 hours. How many miles did she bike per hour?
krok68 [10]
15 miles per hour.
Divide the number of miles by the number of hours to get the miles per hour.
5 0
3 years ago
What is the area of this triangle? A=bh2
Dmitry_Shevchenko [17]
The area of a triangle formal is base times height divided by 2. So 9x 12 which equals 108 then you divide that by 2 which equals 54 and the unit is cm^2
6 0
3 years ago
Read 2 more answers
A particular lawn mower is on sale at two different stores the original price at both stores was $130. Watson’s garden shop is a
matrenka [14]

Answer:

Watson's garden shop has the better deal on the lawn mower.

Hope this helped :)

Step-by-step explanation:

Watson's $130 - 50% = $65

Hartman's $130 - 40% = $78

                  $78 - 15% = About $66

4 0
3 years ago
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Write a function rule that gives the total cost c(p) of p pounds of
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<span>Cost = Pounds of Sugar X 0.59

C= P X 0.59 </span>
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3 years ago
Read 2 more answers
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