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spayn [35]
4 years ago
7

Can someone please help me with these math questions?

Mathematics
2 answers:
Hoochie [10]4 years ago
8 0
Where are the math problems?

kkurt [141]4 years ago
5 0
Where is the problem at ??
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What is the value of a? <br> 9a - 3(a - 6)= -6
r-ruslan [8.4K]
9a-3(a-6)=-6
9a-3a+18=-6
6a+18=-6
6a=-24
a=-4
5 0
4 years ago
Read 2 more answers
A triangle has vertices (-1, 2), (3, 1), and (7, 2). What is the approximate perimeter of the triangle? Round your answer to the
larisa86 [58]
Use the distance formula to find the length of the sides, then add them up to find the perimeter.

\sf d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

For points in the form of (x1, y1), (x2, y2).

(-1, 2), (3, 1)

\sf d=\sqrt{(3+1)^2+(1-2)^2}

\sf d=\sqrt{(4)^2+(-1)^2}

\sf d=\sqrt{16+1}

\sf d=\sqrt{17}

(3, 1), (7, 2)

\sf d=\sqrt{(7-3)^2+(2-1)^2}

\sf d=\sqrt{(4)^2+(1)^2}

\sf d=\sqrt{16+1}

\sf d=\sqrt{17}

(7, 2), (-1, 2)

\sf d=\sqrt{(-1-7)^2+(2-2)^2}

\sf d=\sqrt{(-8)^2+(0)^2}

\sf d=\sqrt{64+0}

\sf d=\sqrt{64}=8

So the perimeter will be:

\sf 8+\sqrt{17}+\sqrt{17}\approx\boxed{\sf 16.25}
3 0
4 years ago
What is the diameter of a circular swimming pool with a radius of 8 feet?
Alenkasestr [34]
We know that,

diameter is twice the radius, I.e d = 2r

Now d = 2(8)ft = 16 feet
5 0
3 years ago
6/2 (1 + 2) ? What is the answer to this the answer choices are: 1, 6, 9, and 3
timama [110]

Answer:

6/2(1+2)

the 2 will divide 6 or go into 6 ,how many times, 3 times because 2*3=6

next 1+2=3

therefore 3(3) =9

5 0
3 years ago
How to order 1/5, 1.35,-0.2 from least to greatest
Alik [6]

Answer:

-0.2, 1/5, 1.35

Step-by-step explanation:

-0.2 is the only negative, therefore it has the least value

1/5 can be shown as 0.5 which is less than 1.35

7 0
3 years ago
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