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tensa zangetsu [6.8K]
3 years ago
10

What is the area and perimeter for these two shapes?

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
A:
Area: 289 m
Perimeter: 51 m

B:
Area: 4 m
Perimeter: 8 m
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Jake was 4 times as old as Kelly 5 years ago. Their total age is 60 now. How much older is Jake than Kelly?​
tatyana61 [14]

Answer:

5 years ago

Let Kelly's age be x

Jake's age is 4x

5 years later

Kelly's age is x + 5

Jake's age is 4x+5

The sum of both their ages is 60. The equation will be

x + 5 + 4x + 5 = 60

5x + 10 = 60

5x = 60 - 10

x = 50/5 = 10

So Kelly is (10 + 5) 15 years old.

Jake is (4*10 + 5) = 45 years old

8 0
3 years ago
Jack practice his trumpet every 3 days. He goes for a run every 4 days. If he did both today, in how many more days will he prac
OLga [1]
He will do both in 12 days since the least common multiple of 3 and 4 is 12. This can be found by making a list of both numbers' multiples. You will see that the first common number or multiple is 12.

Multiples of 3: 3, 6, 9, 12, 15
Multiples of 4: 4, 8, 12, 16, 20


Hope this helped
3 0
3 years ago
Read 2 more answers
What is the degree, leading coefecient, and number of terms for each polynomial of 10b^4+2b^5-8-9b^6
inessss [21]
Its the 6th degree. 10 is the leading coefficient. and there are 4 terms
5 0
3 years ago
If an object moves along the y-axis (marked in feet) so that it’s position at time X (in seconds) is given by f(x) = 108x -12x^2
Mariulka [41]

The velocity equation is:

v(x) = 108 - 24x

Such that:

v(0) = 108 ft/s\\v(2) = 60ft/s\\

And the velocity is zero for x = 4.5

<h3>How to find the velocity equation?</h3>

We know that the position equation is:

f(x) = 108*x - 12*x^2

To get the velocity, we need to differentiate with respect to x, so we get:

v(x) = \frac{df(x)}{dx} = 108 - 2*12*x = 108 - 24*x

Now we want to get the velocity for x = 0 and x = 2, we will get:

v(0) = 108 - 24*0 = 108\\\\v(2) = 108 - 24*2 = 60

Then, when x = 0, the velocity is 108 ft/s, when x = 2 the velocity is 60 ft/2.

Finally, we need to solve:

v(x) = 108 - 24*x = 0\\\\x = 108/24 = 4.5

The velocity is zero when x = 4.5

If you want to learn more about velocity:

brainly.com/question/4931057

#SPJ1

7 0
2 years ago
(Will give brainliest to correct answer.)
Ilya [14]
12 students scored higher than 82 points.
6 0
4 years ago
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