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krek1111 [17]
3 years ago
15

(5×^2-4x-1)-(4x^2-4) how do i simplify this

Mathematics
1 answer:
castortr0y [4]3 years ago
5 0
Simplify whatever is in the parenthesis:

(5×^2-4x-1) and <span>(4x^2-4) 

after that subtract the numbers you got from both </span>parenthesis after simplifying
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Oksanka [162]
Log(ab)=log(a)+log(b)
log_a(a)=1
so

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6 0
3 years ago
Members of the student concil are conducting a fundraiser by selling school calendars. After selling 80 calendars, they had a lo
Oksana_A [137]

Answer:

a)  y=8x-1000

b) profit=\$8

c) They'd have lost $1000 if they had sold no calendars.

Step-by-step explanation:

a) The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope and "b" is the y-intercept.

In this case we know that "y" represents the profit of loss and "x" the number of calendars sold.

Then, according to the exercise, the line passes through these two points:

(80,-360) and (200,600)

Then, we can find the slope of the line with the formula m=\frac{y_2-y_1}{x_2-x_1}

m=\frac{-360-600}{80-200}=8

Now, we can substitute the slope and one of those points into y=mx+b and solve for "b":

600=8(200)+b\\\\b=-1000

Then, subtituting values, we get that the equation that describes the relation between the profit of loss and the number of calendars sold, is:

y=8x-1000

b) The slope of the line is the profit they made from selling each calendar

profit=8

c) The y-intercept is the amount they would have lost if they had sold no calendars:

b=-1000

They'd have lost $1000 if they had sold no calendars.

6 0
3 years ago
How do you write 4000000+30000+800+20+5 in standard form
Lena [83]
4,030,825 is the answer
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3 years ago
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Factor the perfect square trinomials<br>a2+20a+100​
sukhopar [10]

Answer:

-10

Step-by-step explanation:

a^{2} +(10+10)a+100

a^{2} +10a+10a+100

a(a+10)+10(a+10)

(a+10)(a+10)

so,a=-10

6 0
3 years ago
Help me plz!!!!!!!!!!!
svetlana [45]
The first one is the answer
7 0
3 years ago
Read 2 more answers
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