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3 years ago

Find the solution of this system of equations.

Mathematics

1 answer:

Drupady [299]3 years ago

4 0

{x= 0 + y ⇒ x=y
{3x + 12y= 15

3y + 12y = 12
15y = 15
y = 1

x = y = 1

Answer: x=1, y=1

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Brielle and Joshua are running a half marathon race, which is 13.1 miles long. It

Hitman42 [59]

Answer:Brielle will run the half marathon race faster.Brielle will take 1 hour 44 minutes and 48 seconds, Joshua will take 2 hours 37 minutes and 12 seconds

Step-by-step explanation:

10 / 1.25 = 8

8 minutes a mile

18 / 1.5 = 12

12 minutes a mile

Brielle will run the half marathon race faster.

8 x 13.1 =104.8

12 x 13.1=157.2

104.8 - 60=

44.8

60 seconds x .8= 48

Brielle will take 1 hour 44 minutes and 48 seconds

157.2 - 120 = 37.2

60 seconds x .2 = 12

Joshua will take 2 hours 37 minutes and 12 seconds

8 0

3 years ago

Change to vertex form 2x²16x+33

loris [4]

$y=2x^2+16x+33\\\\y=2x^2+16x+32+1\\\\y=2(x^2+8x+16)+1\\\\y=2(x+4)^2+1\\\\or\\\\y=2x^2-16x+33\\\\y=2x^2-16x+32+1\\\\y=2(x^2-8x+16)+1\\\\y=2(x-4)^2+1$

6 0

2 years ago

How to make 3x + (-5) = 19 a 3 step step equation

lbvjy [14]

Answer:

Step-by-step explanation:

You subtract -5 from 19, giving you 24. You then divide 24 from 3, giving you 8.

4 0

2 years ago

Can someone please help me

sveta [45]

Answer:

x = $\frac{y}{m}$ + a

Step-by-step explanation:

Given

y = m(x - a) ← divide both sides by m

$\frac{y}{m}$ = x - a ( add a to both sides )

$\frac{y}{m}$ + a = x

given y = m(x - a) ← distribute

y = mx - ma ( add ma to both sides )

y + ma = mx ( divide both sides by m )

x = $\frac{y+ma}{m}$

3 0

2 years ago

Simplify the radical expression.

NNADVOKAT [17]

$\\\dfrac{ \sqrt{6}}{ \sqrt{2n} } \\ \\
 = \dfrac{ \sqrt{3 \times 2}}{ \sqrt{2 \times n} } \\ \\
 = \dfrac{ \sqrt{3} \times \sqrt{2} }{ \sqrt{2} \times \sqrt{n} } \\ \\ = \dfrac{ \sqrt{3} }{ \sqrt{n}} \\ \\ = \sqrt{ \dfrac{3}{n}}$

6 0

3 years ago