3 years ago

Developing it says constructing equations from a table

1 answer:

7 0

The equation is y=2x+1.
to find b in y=mx+b you simply look for a point where x=0 which was (0,1) making the y-intercept or "b" equal to 1. to find the "m" or slope plug in any point for x and y. (9)=m(4)+1 is 2=m. so y=2x+1 is your answer.

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Alex runs on the track at school each weekday morning. If he runs 5.9 miles each day,about how much does he run every month?

Molodets [167]

Its just 20 x 5.9 = 118 simple

7 0

3 years ago

Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam

kogti [31]

Answer:

Advance tickets-$15

Same-day tickets-$20

Step-by-step explanation:

let x be the cost of advance tickets and y cost of same-day tickets:

$x+y=35\ \ \ \ \ \ \ ...i$

Given that there were 40 advance and 25 same-day tickets for a total of $1100:

$40x+25y=1100\\\\8x+5y=220\ \ \ \ \ \ \ \ \ \ \ ...ii$

#Make x the subject in i and substitute in ii:

$x=35-y\\\\\therefore 8x+5y=220, x=35-y\\\\8(35-y)+5y=220\\\\280-8y+5y=220\\\\60=3y\\\\y=20\\\\x=35-y=35-20=15$

Hence, advance tickets cost $15 each while same-day tickets cost $20 each.

5 0

3 years ago

The probability that Colin buys a sandwich is 0.3.

garik1379 [7]

Answer:

0.21

Step-by-step explanation:

For independent probalities, the chance of both things happening is their product. 0.3 * 0.7 = 0.21

7 0

2 years ago

2x - y - 4 = 0 3x + y - 9 = 0 What is the solution set of the given system?

Ad libitum [116K]

Answer:

$(\frac{13}{5};\frac{6}{5}).$

Step-by-step explanation:

$1)\left \{ {{5x=13} \atop {y=2x-4}} \right. \ 2)\left \{ {{x=\frac{13}{5} } \atop {y=\frac{6}{5} }} \right.$

short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.

5 0

2 years ago

HELP WANTED!!! 10 POINT REWARD!!!

nasty-shy [4]

-5(a + 3) = -55
(a + 3)(-5) = -55
(a + 3) (-5)/-5 = -55/ (-5)
a + 3 = 11
a + 3 (-3) = 11 (-3)
a = 8

hope this helps

8 0

3 years ago