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MissTica
2 years ago
9

What is the answer to this 3a^2-9a

Mathematics
2 answers:
olchik [2.2K]2 years ago
4 0
If i'm correct, the answer should be

-3a

hope this helped! 8)

Nikolay [14]2 years ago
3 0

ANSWER:

{3a}^{2}  - 9a \\  =  {( \sqrt{3} a)}^{2}  -  {(3 \sqrt{a}) }^{2}  \\  = using \: formula \:  {a}^{2}  -  {b} = (a + b)(a - b) \\  = ( \sqrt{3} a + 3 \sqrt{a} )( \sqrt{3} a - 3 \sqrt{a} )

HOPE IT HELPED YOU ☺

You might be interested in
If one angle is 8 less than four times th of its complementary angle find both angle​
charle [14.2K]

Answer:

Let the angle be x

∘

. Then it's complement = (4x)

∘

.

We know that if the sum of two angles is equal to 90

∘

then the angles are said to be complementary.

Step-by-step explanation:

4x+x=90°

5x=90°

x=90°/5

x=18

4×18=72°

This is the complete solution!

(ノ◕ヮ◕)ノ*.✧STAY CONNECTED ❣️

5 0
2 years ago
Nestor works at a garden center where he posts plants. It takes him 2 1/2 hours to pot 15 plants. How many plants can Nestor pot
guapka [62]

Answer:

Nestor can pot 6 plants in 1 hour.

Step-by-step explanation:

first lets convert 2 1/2 hours in mixed fraction form for better calculation

2 1/2 hours = (2*2 + 1)/2 = 5/2 hours

no of plants pot in  5/2 hours = 15

to find no. of plants pot in 1 hours lets

divide both side by 5/2

no of plants pot in  5/2/(5/2)  hours = 15/(5/2) = 15*2/5 = 6

no. of plants pot in 1 hour = 6

Thus, Nestor can pot 6 plants in 1 hour.

6 0
3 years ago
Please answer and simplify -5/8 + (-8/5)
alexandr402 [8]

Answer:

-89/40 or simplified it is -2 9/40

6 0
3 years ago
Read 2 more answers
Round to nearest whole number. 578.3
Ksenya-84 [330]

Answer:

577

Step-by-step explanation:

3 0
3 years ago
Solve for Х.<br> 16<br> 20<br> A 25.6<br> В<br> 6<br> С<br> 12<br> D 15
777dan777 [17]

Answer:

12 which is on C

Step-by-step explanation:

use pathogoras theorem

a^2+b^2=c^2

16^2+b^2=20^2

256+b^2=400

b^2=400-256

b^2=144

b= square root of 144

b= 12

7 0
2 years ago
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