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4 years ago

15

zelia loses seven point every three minutes that she doesnt make it to the next video game. if she played for three hours this m

onth and never made it to the next level, how many points did she lose?

1 answer:

kotykmax [81]4 years ago

4 0

60 points 3 * 60 / 3 = 60

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The Northwest High School senior class decided to host a raffle to raise money for their senior trip. They charged $2 for each s

prisoha [69]

Let $x$ be the tickets that the adults bought, and $y$ be the tickets that children bought.
From the problem we have the system of linear equations:
$\left \{ {{2x+5y=2686} \atop {y=3x}} \right.$

The first thing we are going to do to solve our system, is replacing equation (2) in equation (1), and then, solve for $x$
$2x+5y=2686$
$2x+5(3x)=2686$
$2x+15x=2686$
$17x=2686$
$x= \frac{2686}{17}$
$x=158$

Now that we have the number of tickets that the adults bought, lets replace that value in equation (2):
$y=3x$
$y=3(158)$
$y=474$

Last but not least, to find the total number of tickets, we are going to add $x$ and $y$ :
$158+474=632$

We can conclude that <span>Northwest High School's senior class sold 632 raffle tickets.</span>

7 0

3 years ago

Read 2 more answers

There are twelve shirts in my closet. Five are red, four are blue, and three are green. What is

Bond [772]

Answer:

the probability that I chose red or blue is 75%

75%

6 0

3 years ago

Giving brainliest , easy question :)

nlexa [21]

Cosine is adjacent over hypotenuse so b/6 since we got those from tangent and sin

4 0

3 years ago

Read 2 more answers

Adam buys a car for £18680 which depreciates in value at a rate of 2.5% per year. Work out how much Adam's car will be worth in

timofeeve [1]

Answer:

Adam's car will be 8,406£ in 22 years.

Step-by-step explanation:

I. Find the lose value of 2.5% car by

2.5/100 = x/18,680

46,700/100 = x

x = 467 or the lose value in 1st year.

II. Find the true value of Adam's car by

n year = 18,680 - 467(n)

1st = 18,680 - 467(1)

= 18,213 means if he sell his car now, he'll get 18,213£

22th = 18,680 - 467(22)

= 18,680 - 10,274

= 8,406£

That makes 8,406£ is the right answer.

Hope that help :)

4 0

3 years ago

Plz help don’t understand

saul85 [17]

Answer:

Step-by-step explanation:

every time x goes up 1, y goes up 4

x = 3 minus x = 2 is a delta (a change of 1)

x = 4 minus x = 3 is a delta (a change of 1)

x = 5 minus x = 4 is a delta (a change of 1)

the delta x is ALWAYS 1 for this table you can always substract x's to find the delta delta is symbolized by Δ Δx for the delta x

y = 7 minus y = 3 is a delta (a change of 4)

y = 11 minus y = 7 is a delta (a change of 4)

y = 15 minus y = 11 is a delta (a change of 4)

the delta y is ALWAYS 4 for this table you can always substract y's to find the delta delta is symbolized by Δ Δy for the delta y

the slope m = Δy / Δx m = 4 / 1 m = 4

y = mx + b when x = 0 then y = b (called the y intercept)

so how do we find the y intercept?

look at the pattern in the TABLE Δx and Δy

when x = 1 y = (3 - 4) = -1

x = 0 y =( -1 - 4) = -5

so y = 4x - 5 is a line equation for the data in this table

I believe there are other forms for linear equations

I chose the y-intercept form

use the point slope equation

(y - y1) = m(x - x1) where (x1, y1) are the coordinates of a point on

the line

when you know the slope of the line and a point on the line

as before

m = (y2 - y1) / (x2 - x1) from the table

= (7 - 3) / (3 - 2) still equals

= 4/1 = 4

pick a point on the line say x= 4 and y = 11 (4, 11)

(y - y1) = m(x - x1)

y - 11 = 4(x - 4) point slope form

solving point slope form for y

y - 11 = 4x - 16 add 11 to both sides

y = 4x - 5 back to the y-intercept form

7 0

4 years ago