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3 years ago

(7a + 4) - (9a +2) Can you help me?

Mathematics

2 answers:

alex41 [277]3 years ago

6 0

Answer:

-2a+2

Step-by-step explanation:

Minchanka [31]3 years ago

4 0

Answer:

-2a+6

Step-by-step explanation:

.....

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Giving brainliest for correct awnser. Factor the expression below.

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Answer:

B. (x + 3) (x + 27)

Step-by-step explanation:

To factor the expression, you must split the middle term (18x) into two terms that can be added to get 18, and multiplied to get 81:

$x^2 + 18x + 81$

$x^2 +3x + 27x + 81$

Group:

$(x^2 +3x) (27x + 81)$

Take out GCF (Greates Common Factor):

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(x + 27) (x + 3)

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3 years ago

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Answer:

The correct answer is 10+6p

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4 years ago

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3 years ago

The linear function graphed below represents the value of a comic book since Lucy purchased it. What was the value of the comic

zhuklara [117]

Answer:

C. $25

Step-by-step explanation:

We will find,

The slope of the function using $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ .

Taking the points (1,40) and (2,55).

Slope = $\frac{55-40}{2-1}$

i.e. Slope = $\frac{15}{1}$

i.e. Slope = 15

Substituting the slope and point (1,40) in the equation $y=mx+b$ ,

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i.e. b= 25

Thus, the equation of the linear function is $y=15x+25$ .

This linear function represents the cost of the comic book since Lucy purchased it, where x= years.

So, the initial value of the comic book is when x= 0.

So, $y=15\times 0+25$ i.e. y= 25

Hence, the cost of the book when Lucy purchased it was $25.

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