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ikadub [295]
3 years ago
5

ANSWER PLEASE simplify 2n(n2+2n+3)-3(2n+7) and (-4n2-3n-8)+2(n+9)

Mathematics
1 answer:
dmitriy555 [2]3 years ago
7 0

Step-by-step explanation:

> 2n³+4²+6n-6n-21

2n³+4n²-21

> -4n²-3n-8+2n+18

-4n²-3n-8+2n+18

-4n²-n-8+18

-4n²-n+10

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Peter is overweight. He is 105 kg. His aim is to lose 500 g per week. If he manages this, how many weeks will it be until he is
luda_lava [24]

Answer:

30weeks

Step-by-step explanation:

105kg-90kg=15kg

1kg=1000g

x=500g

500g×1kg=1000g×

x=0.5kg

if 1week=0.5kg how about 15kg =to how many weeks

15kg×1week÷0.5kg=30weeks

so, the and is he requires 30 weeks to have 90kg

4 0
3 years ago
Read 2 more answers
Someone help fast!!! Easy points!!!
erica [24]

Answer:

2A/h   - b<em>2</em>=  b<em>1</em>

Step-by-step explanation:

A = 1/2 ( b<em>1</em>+ b<em>2</em>) h

Multiply each side by 2

2*A = 2*1/2 ( b<em>1</em>+ b<em>2</em>) h

2A =  ( b<em>1</em>+ b<em>2</em>) h

Divide each side by h

2A/h =  ( b<em>1</em>+ b<em>2</em>) h/h

2A/h =  ( b<em>1</em>+ b<em>2</em>)

Subtract b<em>2 </em>from each side

2A/h  - b<em>2</em>=  b<em>1</em>+ b<em>2-</em>b<em>2</em>

2A/h  - b<em>2</em>=  b<em>1</em>

8 0
3 years ago
Which of the following represents a polynomial in standard form?
Schach [20]

Answer

150x-2x=3

Step-by-step explanation:

4 0
3 years ago
Solve the equation -15=a/5 <br> A=-3<br> A=-20<br> A=-10<br> A=-75
agasfer [191]

To solve any equation, you do whatever you need to do 
to wind up with the unknown quantity all alone on one side.
BUT ... whatever you do to one side of the equation, you must
also do to the other side.

Here, we have the
he original equation:           -15  =  a/5

Multiply each side by 5 :     -75  =  a

and bada-bing, THERE's the solution !
4 0
3 years ago
Heeeelllpppppp (THERE ARE FIVE QUESTIONS!!! LOOK AT ALL THE IMAGES
Andreyy89

Answer:

15cm^2

Step-by-step explanation:

area of rectangle

area = length x width

5cm x 3cm

15cm^2

4 0
3 years ago
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