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riadik2000 [5.3K]
4 years ago
13

To estimate how many miles you are from a thunderstorm, count the seconds between when you see lightning and when you hear thund

er. then divide by 5. write and solve an equation to determine how many seconds you would count for a thuderstorm that is 2 miles away.
Mathematics
1 answer:
zimovet [89]4 years ago
5 0
So you've gotta have a variable representing the number of seconds between the time when you see lightning and the time when you hear thunder. I'm going to use <em>x.

</em>So equation:
<em /><em>x</em>/5=2

Solving:
you have to multiply both sides by five, so it becomes:
<em>x</em> = 10

so it's 10 seconds!


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What is the expanded form of the decimal 7664.23? A) (7 x 100) + (6 x 10) + (6 x 1) + (4 x 1 10 ) Eliminate B) (7 x 100) + (6 x
Firlakuza [10]

Answer:

D

Step-by-step explanation:

D) (7 x 1000) + (6 x 100) + (6 x 10) + (4 x 1) + (2 x 1 10 ) + (3 x 1 100 )

3 0
4 years ago
Orly uses 2 cups of raisins for every 8 cups of trail mix she makes. How many cups of trail mix will she make if she uses 10 cup
Veseljchak [2.6K]

Answer:

D. 40 cups

Step-by-step explanation:

10÷2=5

5×8=40

She will use 40 cups of trail mix

5 0
3 years ago
What is the solution to the system of equations? {2x-2y+z=5 2x-2y+3z=7 -3x-3y+3z=9
german
2x - 2y + z = 5....multiply by -1
2x - 2y + 3z = 7
-------------------
-2x + 2y - z = -5 (result of multiplying by -1)
2x - 2y + 3z = 7
-------------------add
2z = 2
z = 2/2 = 1

2x - 2y + z = 5.....multiply by 3
-3x - 3y + 3z = 9...multiply by 2
-------------------
6x - 6y + 3z = 15 (result of multiplying by 3)
-6x - 6y + 6z = 18 (result of multiplying by 2)
-------------------add
-12y + 9z = 33

-12y + 9(1) = 33
-12y + 9 = 33
-12y = 33 - 9
-12y = 24
y = -24/12
y = -2

2x - 2y + z = 5
2x - 2(-2) + 1 = 5
2x + 4 + 1 = 5
2x + 5 = 5
2x = 5 - 5
2x = 0
x = 0

solution is : (0,-2,1)
7 0
3 years ago
If a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month, what
OLEGan [10]

Answer:

$97.15.

Step-by-step explanation:

We have been given that a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month. The interest rate of credit card is 3.35% monthly.

We will use interest formula to solve our given problem.

I=PrT, where,

I=\text{Interest},

P=\text{Principal amount},

r=\text{Interest rate in decimal form},

T=\text{Time}  

Let us convert our given interest rate in decimal form.

3.35\%=\frac{3.35}{100}=0.0335

Upon substituting our given values in interest formula we will get,

I=2,900*0.0335*1

I=2,900*0.0335

I=97.15

Therefore, the monthly interest charge at the end of the 1st month will be $97.15.

7 0
4 years ago
Your friend is going to buy a used car. The one he is considering costs $4000 and will lose value at a rate of 13% per year. How
guapka [62]

13% of $4000 is $520
If the $4000 car loses value at a rate of 13% each year for 3 years
$520 x 3 = $1560
Subtract this amount from $4000
$4000 - $1560 = $2440

<u>Answer: In 3 years, the used car will be worth $2440 in 3 years</u>

6 0
3 years ago
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