How can I solve this

Simplify the equation -4(2x-4)

marin [14]

Answer:

-8x + 16

Step-by-step explanation:

This is called expanding brackets in algebra

1. you need to multiply the numeral on outside of the brackets with each of thosse on the inside

-4 x 2x = 8x

-4 x -4 = 16

4 0

3 years ago

Help help help help help

wariber [46]

Answer:

Step-by-step explanation:

1) (-6 , 2) ; (3 , -5)

Slope = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$= \frac{-5-2}{3-[-6]}\\\\= \frac{-5-2}{3+6}\\\\= \frac{-7}{9}\\$

m = -7/9 ; (-6 , 2)

y - y₁ = m(x -x₁)

y - 2 = (-7/9)(x - [-6])

$y - 2 = \frac{-7}{9}(x + 6)\\\\y -2 = \frac{-7}{9}x + \frac{-7}{9}*6\\\\y - 2 = \frac{-7}{9}x - \frac{7*2}{3}\\\\ y = \frac{-7}{9}x - \frac{14}{3} + 2\\\\y = \frac{-7}{9}x -\frac{14}{3} + \frac{2*3}{1*3}\\\\y = \frac{-7}{9}x - \frac{14}{3} + \frac{6}{3}\\\\y = \frac{-7}{9}x - \frac{8}{3}$

2) (3 , -4) ; m= 3

$y - y_{1} = m(x - x_{1}$ )

y - [-4] = 3(x - 3)

y + 4 = 3x - 3*3

y + 4 = 3x - 9

y = 3x - 9 - 4

Ans: y = 3x - 13

3) m = 2 ; y-intercept (b) = 3/2

y = mx + b

Ans: y = 2x + (3/2)

4) (-1, 3 ) ; (2 , 0)

Slope = $\frac{0 - 3}{2-[-1]}$

$= \frac{-3}{2+1}\\\\= \frac{-3}{3}\\\\= 1$

m = 1; ( -1 , 3)

y - 3 = 1(x -[-1])

y - 3 = 1(x + 1)

y - 3 = x + 1

y = x + 1 + 3

Ans: y = x + 4

5)(2, 1) ;m = -3

y - 1 = (-3)(x - 2)

y - 1 = -3x + 6

y = -3x + 6 +1

Ans: y = -3x + 7

5 0

3 years ago

Read 2 more answers

What are the zero(s) of the function f(x) = the quantity of 5 x squared plus 25 x, all over x?

dimulka [17.4K]

The question is asking to calculate the zeros of the function f(x)=(5x^2+2x)/x, base on that and in my further calculation, the possible answer would be x=5. I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications

5 0

3 years ago

Thomas works as a salesperson on Saturday and Sunday at the verizon store he is payed 46.50 each day and for every smart phone h

Triss [41]

So he is paid 46.5 flat every day
he earns 5% of each smart phone he sells
at the time of the problem, smart phones sell for 70 so he earns 5% or 70 or 5/100 of 70 or 1/20 of 70 or 70/20 or 7/2 or 3 and 1/2 or $3.50 per phone he sells

so pay must be at lease 150 so
pay=46.5+ (# of phones times 3.50)
150<46.50+(number of pones times 3.50)
solve for number of phones
subtract 46.5 from both sides
103.5<(number of phonest imes 3.5)
divdie both sides by 3.5
29.57<number of phones
round up since can't sell a fraction of a phone
30
he has to sell at leas 30 phones

4 0

3 years ago

In a sweepstakes sponsored by Gemini Paper Products, 175,000 entries have been received. If 1 grand prize is drawn, and 3 first

Allushta [10]

Answer:

The correct answer are given by (A) $\frac{1}{175000}$ ; (B) $\frac{429}{175000}$ .

Step-by-step explanation:

Total number of entries to the sweepstakes offered by Gemini Paper Products = 175,000.

Total number of prizes to be awarded includes 1 grand prize, 3 first prizes, 25 second prizes and 400 third prizes = 1 + 3 + 25 + 400 = 429.

(A) Required Probability for a person who has put one entry to win the grand prize is given by the fraction $\frac{1}{175000}$ .

(B) Required Probability for a person who has put one entry to win any prize offered is given by $\frac{429}{175000}$ .

5 0

3 years ago