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Nadusha1986 [10]
3 years ago
8

This is Math 3. I am confused because of the -2

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0

Answer:

x=5

Step-by-step explanation:

for the work I use a website called symbolab.com and it does all the work and everything for you!

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Factorize 9(a+1)^2-81​
Lunna [17]

Answer:9a^2+18a-72

Step-by-step explanation:

9(a+1)^2-81

9(a+1)(a+1)-81

Open brackets

9(a^2+a+a+1)-81

9(a^2+2a+1)-81

9a^2+18a+9-81

9a^2+18a-72

5 0
3 years ago
on each of 3 days Derrick rode 6.45 km to school 150 meters to the library and then 500 meters back home. how many kilometers di
Alisiya [41]
1,969.35.
first you add them all up (6.45+150+500)=656.45, which is how much he rode in 1 day, no you multiply it by 3. so 3(656.45)=1,969.35 so thats how many km he rode in three days 

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3 years ago
The following triangles are congruent by SAS. How did we know that
Vinil7 [7]

Answer:

The angles are vertical and share the same vertex.

5 0
2 years ago
Money in a particular savings account increases by 6% after a year. How much money will be in the account after one year if the
Alona [7]

Answer:

Step-by-step explanation:

34,999999

5 0
2 years ago
You are paid a commission plus $5.40 per hour with time and a half over time for all hours over 8 per day. Your commission consi
Hitman42 [59]

Answer:

Gross pay for the week = $603.85

Step-by-step explanation:

Monday pay = (5.4 x 8) + (2.7 x 1) = $45.9

Tuesday pay = 5.4 x 8 = $43.2

Wednesday pay = (5.4 x 8) + (2.7 x 3) = $51.3

Thursday pay = (5.4 x 8) + (2.7 x 1) = $45.9

Friday pay = (5.4 x 8) + (2.7 x 2) = $48.6

Saturday pay = 5.4 x 8 = $43.2

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Commission on sales above $3000 = 0.05 x 4115 = $205.75

Gross pay for the week = 45.9+43.2+51.3+45.9+48.6+43.2+120+205.75 = $603.85

8 0
2 years ago
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