![aeshaalhemri](/avatars/15682.jpg)
aeshaalhemri
21.07.2019 •
Mathematics
Y= 4x - 6 2x - 3y = 8 if this problem is to be solved by substitution, which is a correct step? a.2x - 12x + 18 = 8 b.2x - 12x - 18 = 8 c.2x - 4x + 6 = 8 d.2x + 12x + 18 = 8
Solved
Show answers
More tips
- S Society and Politics Will Japan become Russia s Military Enemy?...
- P Philosophy Is Everything We Strive for Eventually Achieved and Destroyed?...
- S Society and Politics Understanding Politics and Its Role in the Development of Civilization...
- P Philosophy Why Did God Create Man and Place Him in Obscurity?...
- S Society and Politics Skoptsy: Who They Are and How They Perform Castration?...
- O Other Childhood Fears: What Many of Us Experienced...
- P Philosophy What is Something for you?...
- H Health and Medicine Why Do Humans Have One Heart?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: Mathematics
- M Mathematics Evaluate each expression. 1. 56/b for b=7 2. v+16 for v=9 3.2(4e) for e=5...
- M Mathematics Asalt truck drops 39 kilograms of salt per minute how many grams of salt does the truck drop per minute...
- M Mathematics What is the value of the underlined digit in 91,764,350...
- M Mathematics How would making a table you to find the number of minutes it took joe to cut the sheet metal into 5 pieces?...
- M Mathematics The lateral area of a cone is 198.6 cm2. the diameter of the cone is 10.2 cm. determine the height of the cone to the nearest tenth of a centimetre....
- M Mathematics There is a balanced scale. on one side of the scale there are 5 spheres and 1 cube. on the other side of the scale there is 2 spheres and 3 cubes. the question is: if cubes weigh...
- M Mathematics Atrap insects is in the shape of a triangular prism. the area of the base in 3.5in and the height of the prism is 5in. what is the volume of this trap?...
- M Mathematics Farid takes 7/8 teaspoons of allergy medicine, how much medicine is taken in one week...
- M Mathematics The rule for a pattern is add 6. the first term is 5. which of the following numbers is a term in the pattern?...
- M Mathematics Iran 3 1/2 miles in 3/4 of an hour. how fast is that on average plz show work...
Ответ:
The correct step is a.![2x-12x+18=8](/tpl/images/0117/2718/25775.png)
Step-by-step explanation:
Given the following linear equation system :
One way to solve it is by substitution.
By substitution, we need to have one of the variables in term of the another.
In this exercise, we have the variable ''y'' in terms of ''x'' in the first equation :
Given that we know this, we can replace the value of ''y'' in the second equation :
Replacing ⇒
That it is the correct step in order to use substitution.
Ответ:
2/3 / 1 = x / 6
Cross multiply to get x = 2/3 * 6 = 4 cups