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ANTONII [103]
3 years ago
7

A 1000 KG car has 50,000 joules of kinetic energy. What is the speed?

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
7 0
KE=1/2mv^2
50000=(0.5)(1000)v^2
v^2=50000/500
v^2=100
v=10 ms^-1
GenaCL600 [577]3 years ago
4 0

Answer:

½mv²= KE  

½(1000)?²= 50000

<u>500</u>*?²= <u>50000 </u>

500          500

? ²=100

Square root  

?= 10

10 m/s is you answer

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How do I solve this equation????
Alexus [3.1K]
So for this question (for finding x and y) you will want to use elimination. To do this you will need to bring the x and y to the same side (I put them on the left):
-3/2x+y=6
x+y=0
Now subtract the y on the bottom from the top to isolate x:
3/2x=6
Now the easiest way to bring over the 3/2 to isolate the x fully is to convert it to decimal (1.5) and divide it by 6 (because when multiplication on one side of problem the only way to bring it over is to divide):
x=6/1.5
which simplifies to: 
x=4
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4 0
3 years ago
Find the area of the trapezoid. Round to the nearest hundredth.
Margaret [11]

Answer:

36.16

Step-by-step explanation:

A=a+b

2h=8.5+13.75

2·3.25=36.15625

3 0
3 years ago
Which integer represents the statement "Drink descended 50 feet"?
azamat

Answer:

-50

Step-by-step explanation:

If the drink is descending by 50 feet, hypothetically I would say that the drinks at 0 ft. so it would be -50

7 0
3 years ago
Read 2 more answers
(18) POINTS pLEASE HELP
JulijaS [17]

Answer:

(x-4)(x-3)

Step-by-step explanation:

x^{2} -7x+12\\

multiply 1 and 12= 12

find two numbers that multiply to get twelve AND add together to get -7(the middle number)

the two numbers are -3 and -4 (they add up to get -7 AND multiply together to get 12)

plug in these numbers for -7x

x^{2} -3x-4x+12

x(x-3)-4(x-3)

the bolded is the first binomial and the second binomial is in the parenthesis.

(x-4)(x-3)

I hope this helps!

5 0
3 years ago
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7. On Thursday, Kim purchased a medium iced caramel latte and a blueberry muffin for $5.18. Then, on Friday, Kim
sashaice [31]

Answer:

Cost of medium iced caramel latte = $3.59

Step-by-step explanation:

Assume;

Cost of medium iced caramel latte = x

Cost of blueberry muffin = y

So,

On Thursday

x + y = 5.18......eq1

On Friday

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Eq1 × 3

3x + 3y = 15.54......eq3

eq3 - eq2

x = 3.59

Cost of medium iced caramel latte = $3.59

4 0
3 years ago
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