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2 years ago

Which numerical expression reprensents 1/2 the sum of 7 and 5 ?

Mathematics

2 answers:

djyliett [7]2 years ago

5 0

7+5=12 then divide by 2 and get 6 I think it's his because it's asking what's half of 7+5

Amiraneli [1.4K]2 years ago

3 0

You need to multiple 7 and 5 or you could just skip the answer

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Can someon help me plis?

PtichkaEL [24]

this one lol

Step-by-step explanation:

because this shape has 12 sides when every other shape has 13

4 0

2 years ago

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Multiply. Check picture.

VashaNatasha [74]

The answer is $3x^4-13x^3-x^2-11x+6$ .

Solution:

Use algebraic identity: $a^m\times a^n=a^{m+n}$

For example: $x^2\times x=x^{2+1}=x^3$

Given expression $(x^2-5x+2)$ and $(3x^2+2x+3)$ .

To multiply these equations.

$(x^2-5x+2)\times(3x^2+2x+3)$

$=x^2(3x^2+2x+3)-5x(3x^2+2x+3)+2(3x^2+2x+3)$

$=(3x^4+2x^3+3x^2)+(-15x^3-10x^2-15x)+(6x^2+4x+6)$

$=3x^4+2x^3+3x^2-15x^3-10x^2-15x+6x^2+4x+6$

Combine like terms together.

$=3x^4+(2x^3-15x^3)+(3x^2-10x^2+6x^2)-15x+4x+6$

$=3x^4-13x^3-x^2-11x+6$

$(x^2-5x+2)\times(3x^2+2x+3)=3x^4-13x^3-x^2-11x+6$

Hence the answer is $3x^4-13x^3-x^2-11x+6$ .

3 0

3 years ago

PLZ HELP ASAP ILL MARK BRAINLIEST!

icang [17]

Polynomial degree : 2

Leading coefficient : 11

7 0

3 years ago

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11. What is the value of function: f(x) = 10x +2 when x = 5?<br> A)5<br> B) 50<br> C)52<br> D)60

kolezko [41]

Answer:

10[5]+2=52

The answer is c

8 0

2 years ago

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1. Annual sales for a fast food restaurant are $650,000 and are increasing at a rate of 4% per year

Zielflug [23.3K]

Answer:

The value after 7 years is $ 855355.65

Solution:

Given that, Annual sales for a fast food restaurant are 650000 and are increasing at a rate of 4% per year

To find: exponential function to find the annual sales after 7 years

The exponential growth function is given as:

Where,

"a" is the initial amount

"y" is the future value

"r" is the rate of interest in decimal

"t" is the number of years

Here in this given question,

a = 650000

t = 7 years

Substituting the values in given formula,

Thus the value after 7 years is $ 855355.65

Step-by-step explanation:

4 0

3 years ago