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BaLLatris [955]
3 years ago
5

Please help! I don't understand this!! Solve using substitution:

Mathematics
1 answer:
Ilya [14]3 years ago
3 0
First you solve for y for the top equation, making the top equation become y=-3+5=x.
now we have to substitute that into 3x-8y=24.

that gives you 3x-8(-3+5x)=24
now you solve it for x, which is 0.
now you have to substitute 0 for x in the equation y=-3+5x, so it now becomes y=-3+5*0.
when you solve this for y, you get -3. this means your answer is y=-3 and x=0
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When completing an online shopping transaction, a typical shopper takes 5 seconds to select each product and another 60 seconds
natulia [17]

4 products are being purchased.

Step-by-step explanation:

Given,

Time taken to select each product = 5 seconds

Time taken to complete check out process = 60 seconds

Total time taken for a transaction = 80 seconds

Let,

x be the number of products purchased.

Time taken for each product*Number of product + Time for check out process = total process

5x+60=80\\5x=80-60\\5x=20

Dividing both sides by 5

\frac{5x}{5}=\frac{20}{5}\\x=4

4 products are being purchased.

Keywords: variable, division

Learn more about division at:

  • brainly.com/question/11258952
  • brainly.com/question/11343416

#LearnwithBrainly

8 0
3 years ago
Is y-x=2x-2/3y a linear or nonlinear m?
Ivanshal [37]

Answer:

linear

Step-by-step explanation:

y - x = 2x - \frac{2y}{3}

\frac{5y}{3} = 3x

y = 9x/5

6 0
3 years ago
Write using no denominator. (No fraction line is necessary. Use x for multiplication between numbers.)
Wewaii [24]
If you don't want to express this into fractions, then you take the inverse of the exponents in your denominator. For example, 8 would be 8^-1, x^4 would be x^-4, y^3 would be y^-3 and z would be z^-1. Then, just multiply all of them. The final answer would be

3 x 8^-1 x a²b³c^5x^-4y^-3z^-1

I hope my explanation helped you understood the solution :)
7 0
3 years ago
Read 2 more answers
Xm = pn, Solve for x.
solniwko [45]

Answer:

xm = pn

x=pn/m

the value of x is pn/m

8 0
2 years ago
Help with 5 math questions pls!
gizmo_the_mogwai [7]

Answer:

1. 9

2. 6√(2)/8.49

3. √(12)/3.46

4. √(50)/7.07

5. 1584

Step-by-step explanation:

Use pythagorean theorem for all of these triangles which is a^2+b^2 = c^2, for the problems with writing, just break it down and draw out a triangle and solve it from there and plug in the right numbers and solve

6 0
4 years ago
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