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zhannawk [14.2K]
2 years ago
7

you use a metal detector on the beach.You find 2 quarters,12 dimes,and 23 pennies.Write an equation you can use to find how many

more pennies p you need to find in order to have a total of $2.00
Mathematics
1 answer:
IgorC [24]2 years ago
7 0

Answer:

  2.00 = 0.25(2) +0.10(12) +0.01(23 +p)

Step-by-step explanation:

The number of pennies needed will be the number required to make up the difference between $2.00 and the change already found.

__

Let p represent the number of pennies needed. Together with the change already found, we want the total to be $2.00.

  2.00 = 0.25(2) +0.10(12) +0.01(23 +p) . . . . . equation for p

_____

7 pennies need to be found

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I need help finding x
BigorU [14]

Answer:

The answer to your question is      x = \sqrt{50}    or x = 5\sqrt{2}

Step-by-step explanation:

To solve this problem use the Pythagorean theorem because two right triangles are formed.

                    c² = a² + b²

c = 10

a = x

b = x     Because in a square all the sides measure the same.

                    10² = x² + x²

- Simplify

                    100 = 2x²

                    x² = 100/2

                   x² = 50

                    x = \sqrt{50}    or x = 5\sqrt{2}

         

3 0
3 years ago
21-14divided by 2 and add 6
Bogdan [553]
Nine and a half, I believe :)
6 0
4 years ago
A slug takes 4.25 minutes to travel 11.2 centimeters. What is the speed of the slug in meters per second?
MAXImum [283]

Answer:

4.39*10^{-4}\ m/sec

Step-by-step explanation:

Remember that

1\ m=100\ cm

1\ min=60\ sec

The speed is equal to divide the distance by the time

Convert the units

4.25\ min=4.25(60)=255\ sec

11.2\ cm=11.2/100=0.112\ m

so

0.112/255=0.000439\ m/sec

4.39*10^{-4}\ m/sec

5 0
4 years ago
The temperature started at 87 degrees Fahrenheit is the temperature went down 10 degrees Fahrenheit then went up 17 degrees Fahr
SIZIF [17.4K]

Answer:

i think the answer is D

Step-by-step explanation:

87 degrees minus 10 degrees would give you 77 (which is the lowest temperature). then 77 degrees plus 17 degrees is 94 degrees. the difference between the highest temp and lowest (94-77) would be 17.

6 0
3 years ago
What is the equation of the line that passes through the point (5,6) and has a slope of 2?
pantera1 [17]

Answer:

Answer is at the bottom!!

Step-by-step explanation:

y = - \frac{2}{5} x - 2

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

rearrange 2x + 5y = 10 into this form

subtract 2x from both sides  

5y = - 2x + 10 ( divide all terms by 5 )

y = - \frac{2}{5} x + 2 ← point- slope form with slope m = - \frac{2}{5}

Parallel lines have equal slopes hence  

y = - \frac{2}{5} x + c is the partial equation of the parallel line

to find c, substitute ( 5, - 4 ) into the partial equation

- 4 = - 2 + c ⇒ c = - 4 + 2 = - 2

y = - \frac{2}{5} x - 2 ← equation of parallel line

Hope this helps!!

6 0
3 years ago
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