4 years ago

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

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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