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3 years ago

What is the solution to this system of equations? 3x + y = 17 x + 2y = 49

1 answer:

3 0

3x+y=17
x+2y=49
Times 3 for both side
3x+6y=147
-
3x+y=17
=
5y=130
Divided 5 for both side:
y=26
3x+y=17
3x+26=17
Subtract 26 for both side
3x=-9
Divided 3 for both side
x=-3. Hope it help!

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The math team went to lunch to celebrate Ms. Renft's birthday on February 11th. The

k0ka [10]

Answer:

$171.12

Step-by-step explanation:

Including the tip and cost, it is 171.12. Multiply 148.6 by 1.15, which includes the total cost plus another 15% for the tip.

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3 years ago

Mr Smith is on a road trip from Cleveland to Chicago. He is 65% of the way there , and has already driven 455 miles. How many mo

Keith_Richards [23]

Hi i'd be glad to help you with this equation.

basically all we have to do is find (65%) of 455*.

65% of 455* = 295.75

Next.

455 + 295.75 = 750.75

So, to check my work I have 750.75 miles in total.

I have already driven 455 miles of 750.75 miles.

Using subtraction we subtract our distance from our total.

750.75 - 455 = 295.75

So, in total your answer to this problem is (295.75)

Hope this helps.
Have a great day!

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3 years ago

Hi. Please I need help with these questions.

ElenaW [278]

Answer:

Q 12 roots of the equation

$2x^{2} -6+1=0 \\= (x-\frac{\sqrt{10} }{2})(x+\frac{\sqrt{10} }{2})\\$

∝ = $\frac{\sqrt{10} }{2}$

β = $-\frac{\sqrt{10} }{2}$

no matter if u oppose the root

(i) 2( $\frac{\sqrt{10} }{2}$ ) $(-\frac{\sqrt{10} }{2} )^{2}$ +2 $(\frac{\sqrt{10} }{2} )^{2}$ ( $-\frac{\sqrt{10} }{2}$ )+2(

(ii)( $(\frac{\sqrt{10} }{2})^{2}$ - 3 ( $\frac{\sqrt{10} }{2}$ )( $-\frac{\sqrt{10} }{2}$ ) + ( $(-\frac{\sqrt{10} }{2})^{2}$ ) = $\frac{25}{2}$

Q 13 roots of equation

$4x^{2} -3x-4=0\\\alpha = -0.693\\\beta = 1.443$

the roots of the second equation are

x1 = 1/3(-0.693) = -0.231

x2 = 1/3(1.443) = 0.481

the equation is

(x+0.231)(x-0.481)=0

$x^{2}-\frac{1}{4} x-\frac{1}{9}$

4 0

3 years ago

What are the whole steps to get the answer for 4x -6=x +9?

lesantik [10]

First do -x then -x to 4x so you have 3x-6=9.
Add 6 to -6 to cancel it out, then add 6 to 9.
3x-6. Divide 3from x, divide 3from 6. X=2. Plz answer my question too plz

6 0

3 years ago

Read 2 more answers

Plz help timed test I’ll give extra points

balu736 [363]

Answer:

<em><u>am not really sure but ig the answer is B </u></em>

Step-by-step explanation:

Plz help timed test I’ll give extra points

3 0

3 years ago