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Cloud [144]
4 years ago
9

Area of triangle PQR = 10.2 square units

Mathematics
1 answer:
bearhunter [10]4 years ago
8 0
The sum of all 3 triangles = 16.3 + 11.5 + 10.2


answer= 38
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If Ian has 4 times as many nickels as dimes and they have a combined value of 180 cents, how many of each coin does he have?
algol [13]
4 (.05) x +( .10)x  =180
.20x + .10x = 180
.30x = 180
X= 6
So. 4 times 6 = 24 nickels and 6 dimes = 180 cents
8 0
3 years ago
Explain the difference between +8, -8, |8|
SSSSS [86.1K]

8+ is positive

-8 is negative

I am not really sure about |8|

I'll get back to you if I can find the answer

6 0
3 years ago
Read 2 more answers
HELP QUICK !’ ***What is the area of a circle with a diameter of 126 in?
Vladimir79 [104]

Answer:

49,850.64

Step-by-step explanation:

To find the area of a circle, you must use the formula pi r ^2 (pi r squared).

In this case, we are using 3.14 for pi, so we can add that into the formula.

3.1r^2

We also know the radius, so we can add that in too.

3.14 x 126 ^2

Now solve.

126^2 = 15,876

15,876 x 3.14 = 49,850.64

49,850.64 is the answer.

Hope this helped!

8 0
3 years ago
What does solution of a system of linear equation mean??<br> PLEASE GET THIS RIGHT!!!!!
ikadub [295]

<em>Answer: A solution to a system of equations means the point must work in both equations in the system. So, we test the point in both equations. It must be a solution for both to be a solution to the system. Hope this helps.</em>

<em />

<em>I hope it helps if it does can please mark me as Brainliest thank you!</em>

3 0
3 years ago
Read 2 more answers
The equation for the circle is:
noname [10]
(-8,12)

the equation for a circle, centered at (h,k) with radius r is
(x-h)^2+(y-k)^2=r^2

so you need to get your equation in this form. completing the square is one way to do this. separating x and y terms you get
x^2+16x+y^2-24y+159=0
which can then be rewritten using complete the square
x^2+16x+64+y^2-24y+144+159=0+64+144
which is equivalent to
(x+8)^2+(y-12)^2+159=208 \\ (x+8)^2+(y-12)^2=49

so your center is the point (-8,12) and the radius would be 7.

8 0
3 years ago
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