If 4x+5y=10 and x+3y = 8 then (5x+8y)/3=

Mathematics

2 answers:

tester [92]3 years ago

6 0

Answer:

13y/3 is the answer

Step-by-step explanation:

aev [14]3 years ago

5 0

First set up a system of equations and solve.

4x+y=10
x+3y=8
In order to have one variable cancel out, I will multiply the top by -3.

-12x-3y=-30
x+3y=8
____________
-11x=-22
x=2

Then plug the x value into one of the original equations.

(2)+3y=8
3y=6
y=2

Now plug both into the final equation:
5(2)+8(2)/3
(10+16)/3
26/3
8.667 is the answer or 26/3.

You might be interested in

Find the area of the figure. PLEASE HELP I NEED IT URGENT PLEASE

ale4655 [162]

Answer:

Area = Area of bigger triangle - Area of small triangle

${ \rm{area = ( \frac{1}{2} \times b_{b} \times h_{b}) - ( \frac{1}{2} \times b_{s} \times h _{s} )}} \\ \\ { \tt{area = ( \frac{1}{2} \times 18 \times 7) - ( \frac{1}{2} \times (18 - 13) \times 7) }} \\ \\ { \tt{area = (9 \times 7) - (2.5 \times 7)}} \\ \\ { \underline{ \tt{ \: \: area = 45.5 \: \: sq \: units \: \: }}}$

Area = area of square + area of two right angled triangles

${ \tt{area = (s \times s) + 2( \frac{1}{2} \times b \times h)}} \\ \\ { \tt{area = (6 \times 10) + (3 \times 5)}} \\ \\ { \underline{ \tt{ \: \: area = 75 \: \: {m}^{2} \: \: }}}$

5 0

1 year ago

Read 2 more answers

Write 9/10 - 3/10 as a mixed number

jeka57 [31]

You do 9/10. Which here it only fits once. So this is 1 1/10. The other one fits 3 times. So its 3 1/10.

If you want the subtraction also done its 1 4/10.

3 0

3 years ago

Misty is buying a house for $385,000. She is financing $345,500 and obtained a 15 year fixed rate mortgage with the 4.875% inter

Nikitich [7]

345500=pmt[(1-(1+0.04875/12)^(-12×15))/(0.04875/12)]
Solve for pmt
Pmt=2709.75

3 0

3 years ago

Simplify the following expression <br>9/20 + 5/12

Artyom0805 [142]

<em>9/20+5/12=14/32/2 equals a over all 7/16</em>

4 0

3 years ago