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patriot [66]
3 years ago
15

Systems of equations pls help!

Mathematics
1 answer:
timama [110]3 years ago
8 0
Equation 1 + equation 2

3x-8y +(-3x+10y) = 9+(-15)
2y= -6
then y=-3

from equation 1
3x-8y=9
3x-8(-3)=9
3x+24=9
3x=9-24=-15
then x=-5
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Step-by-step explanation:

There 2 green marbles and 4 orange marbles so the ratio is 2 to 4

You can simplify that down to 1 to 2

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3 years ago
a group of 169 students needs to be seated in the square formation for a yearbook photo how many students should be in each row
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You drive your car for 3 hours at an avarage speed of 130km an .how far did you go?​
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Step-by-step explanation:

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5 0
3 years ago
If jummai is 12years old and Tunde is 8years old and they share 15bananas in the ratio of their ages how many will each have sho
bixtya [17]

Jummai and Tunde will each have 9 and 6 bananas respectively.

For the given ratio case we use the sharing ratio criterion to solve the problem.

Jummai is 12 years old.

Tunde is 8 years old.

Their ages are in ratio of;

                             A = 12 : 8

                             A =  3 : 2

The ratio's sum is 5.

15 bananas total are available for sharing.

Jummai will have x\\ bananas  x = (15 x 3/5) = 9

Tunde will have y bananas  y = (15 x 2/5) = 6

Jummai and Tunde will each have 9 and 6 bananas with them.

To learn more about Ratio click here:

brainly.com/question/13419413

#SPJ4

5 0
1 year ago
Ex 2.6
Anna007 [38]
y=3x^4 -4x^3 -12x^2 +1\\
y'=12x^3-12x^2-24x\\\\
12x^3-12x^2-24x=0\\
12x(x^2-x-2)=0\\
12x(x^2+x-2x-2)=0\\
12x(x(x+1)-2(x+1))=0\\
12x(x-2)(x+1)=0\\
x=0 \vee x=2 \vee x=-1\\\\
\forall{x\in(-\infty,-1)\cup(0,2)}\ y'
y(-1)=3\cdot(-1)^4-4\cdot(-1)^3-12\cdot(-1)^2+1=3+4-12+1=-4=\\
=y_{min}
5 0
3 years ago
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