Hiiii

Mathematics

2 answers:

bezimeni [28]3 years ago

3 0

Answer:

5 and -5 (±5)

Step-by-step explanation:

x²-8=17

x²=25

√x²=√25

x=±5

BabaBlast [244]3 years ago

3 0

3 and -3 is the right answer

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Find the solution of the system of equations.<br> – 2 – 8y = -30<br> 2x + 8y = 36

nydimaria [60]

Answer:

x= 1.5

y= 4.125

Step-by-step explanation:

Step one:

given the two equations

$-2x - 8y = -30-------1\\\\2x + 8y = 36--------2$

Step two:

let us subtract the equations

$-2x - 8y = -30-------1\\\\ -(2x + 8y = 36)--------2\\\\0x-16y=-66$

$-16y=-66\\\\16y=66$

divide both sides by 16

$y=66/16\\\\y=4.125$

put y= 4.125 in equation 2

$2x + 8(4.125)= 36\\\\2x+33=36\\\\2x=36-33\\\\2x=3\\\\x= 3/2\\\\x= 1.5$

3 0

3 years ago

The girls tennis team was interested in raising funds for an upcoming trip. The team sold tumblers for $10 and sun hats for $5

gtnhenbr [62]

The equations that can be used are 10T + 5S = 190 and T + S = 30.

<h3><u>Equations</u></h3>

Given that the girls tennis team was interested in raising funds for an upcoming trip, and the team sold tumblers for $10 and sun hats for $5, and when the sales were over, the team had earned $190 and sold 30 total products, which included a mix of tumblers and hats, to determine which equations can be used to represent the situation, the following calculations must be made: