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Sloan [31]
2 years ago
5

What is the product of -3a and -6a​

Mathematics
1 answer:
Bezzdna [24]2 years ago
6 0

Answer:

18a^2

Step-by-step explanation:

Multiply the numbers together. Multiply the variables together.

(-3a)(-6a) = (-3) * (-6) * a * a = 18a^2

-3 times -6 = 18 since negative times negative is positive, and 3 * 6 = 18.

Also a * a = a^2.

Answer: 18a^2

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Area of a circle is 80 cm². Work out the circumference of the circle.
GuDViN [60]

Answer:

The circumference of circle is: 31.714 cm

Step-by-step explanation:

Let C be the circumference of the circle

And A be the area of circle

It is given that:

A = 80cm^2

We have to find the radius first so that it can be used to find the circumference

The area of circle is given by the formula:

A = \pi r^2

Putting the value of area

80 = 3.14 * r^2\\\frac{80}{3.14} = r^2\\r^2 = 25.477

Taking square root on both sides

\sqrt{r^2} = \sqrt{25.477..}\\r = 5.0475\ cm

Now

C = 2\pi r

Putting the value of radius

C = 2 * 3.14 * 5.05\\C = 31.714\ cm

Hence,

The circumference of circle is: 31.714 cm

3 0
3 years ago
HELP FAST!!! <br> what’s the answer?
JulijaS [17]

Answer:

(1,-3)

Step-by-step explanation:

4 0
2 years ago
7 + (10 − 4)2 ÷ 4 × 1 over 2 to the power of 3
postnew [5]

1.25

7 + (10 − 4)2 ÷ 4 × 1 over 2 to the power of 3

       7+ (6)2÷ 4 × 1 over 2 to the power of 3

             7+ (12)÷ 4 × 1 over 2 to the power of 3

                     7+3 × 1 over 2 to the power of 3

                          10 over 2 to the power of 3

                                     10 over 8

                                              1.25

5 0
2 years ago
ASAP PLEASE HELP also can yall help with describing 4 for me thanks
Stels [109]
4 is a number That u use to count with or something g sorry gotta be more spiscific
3 0
3 years ago
Complete the function table.
Nesterboy [21]

Step-by-step explanation:

with the y= 4x +1

they find the first column by replacing x in the function by 0

meaning if x= 0 then y=4(0) + 1 so y=1

for the second column if x =2 then y= 4(2) +1 so y= 9

for the 3rd one if x =4 then y = 4(4)+1 so y = 17

7 0
3 years ago
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