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Neko [114]
2 years ago
12

How to answer 100x^2+60x+9

Mathematics
1 answer:
iVinArrow [24]2 years ago
3 0

Answer:

Step-by-step explanation:

Rewrite

100

x

2

100

x

2

as

(

10

x

)

2

(

10

x

)

2

.

(

10

x

)

2

+

60

x

+

9

(

10

x

)

2

+

60

x

+

9

Rewrite

9

9

as

3

2

3

2

.

(

10

x

)

2

+

60

x

+

3

2

(

10

x

)

2

+

60

x

+

3

2

Check the middle term by multiplying

2

a

b

2

a

b

and compare this result with the middle term in the original expression.

2

a

b

=

2

⋅

(

10

x

)

⋅

3

2

a

b

=

2

⋅

(

10

x

)

⋅

3

Simplify.

2

a

b

=

60

x

2

a

b

=

60

x

Factor using the perfect square trinomial rule

a

2

+

2

a

b

+

b

2

=

(

a

+

b

)

2

a

2

+

2

a

b

+

b

2

=

(

a

+

b

)

2

, where

a

=

10

x

a

=

10

x

and

b

=

3

b

=

3

.

(

10

x

+

3

)

2

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Your answer could be written in the equation

44=20+4*x

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Then you would solve after that by doing
44-20 getting 24 then dividing by 4
Leaving
x=6
4 0
2 years ago
104.65/ 35 <br> pls help and can u show me a example
Setler79 [48]

Answer:

2.99 or 3

Step-by-step explanation:

3 0
3 years ago
A batsman scored the following number of runs in six innings:
vlabodo [156]

Answer:

D

Step-by-step explanation:

The mean or average is calculated by summing each element and then dividing by the number of elements.

We have: 35, 30, 45, 65, 44, and 21.

There are six elements in total.

We find the sum by adding. Hence:

35+30+45+65+44+21=240

We will now divide by 6, the number of elements:

240/6=40

Therefore, the mean runs scored by the batsman is 40.

Hence, our answer is D.

4 0
3 years ago
Samantha and Matt are each saving for new bikes. So far, Samantha has saved $15 and can earn $2 per hour for babysitting. Matt h
Sophie [7]

Answer:

  • 6 hours

Step-by-step explanation:

<u>We know that:</u>

  • Samantha = 15 + 2x
  • Matt = 3 + 4x
  • Samantha = Matt
  • [x = Number of hours]

<u>Solution:</u>

  • 15 + 2x = 3 + 4x
  • => 15 - 3 = -2x + 4x
  • => 12 = 2x
  • => x = 6

Hence, after 6 hours of work, Samantha and Matt will have the same amount.

7 0
2 years ago
Choose what the expressions below best represent within the context of the word problem. The length of a rectangle is 12 inches
nexus9112 [7]
The answer is 4. Since 12+ 12 = 24, I added 4 + 4, which made 42.
So the length of the width of the rectangle is 4.
Hope this helps!
3 0
3 years ago
Read 2 more answers
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