All categories

3 years ago

Which equation would be the easiest to solve first by using the substitution method? EXPLAIN WHY

Mathematics

1 answer:

Arlecino [84]3 years ago

6 0

Answer:

Equation 2: x - 2y = 1

Step-by-step explanation:

The equations easiest to use substitution are the ones that have the variable multiplied by one, as in the case of Eq. 2 where x is 1x, so if you substitute a zero for x, we know that y has to be -1/2 for the equation to be true. Furthermore, if you substitute a 0 for y you automatically know that x = 1.

If you try to substitute anything for x in equation 1, let's say x = 1, you still have to multipy by 3, then the rest of the problem would be more steps.

You might be interested in

A regular hexagon (6-sided figure) has sides that are all the same length. Each side length is represented by the expression x +

Mandarinka [93]

Perimiter=6 times legnth of one side
P=6(x+1/3y)
P=6x+6/3y
P=6x+2y

if x=5 and y=6
P=6(5)+2(6)
P=30+12
P=42

A. P=6x+2y
B. 42 units is the perimiter

8 0

3 years ago

Bob deposits $2480 into a savings account at 3% interest. At the end of four years how much simple interest does he earn?

vovikov84 [41]

Ok here’s the equation you can run on the next one
A=P(1+rt) A is total P is current amount or starting amount r is annual interest and t is the amount of time
Your answer is
$297.60

7 0

2 years ago

Find the 9th term of the geometric sequence whose common ratio is 1/3 and whose first term is 2.

raketka [301]

Answer:

2/6561

Step-by-step explanation:

Geometric sequence formula : $a_n=a_1(r)^n^-^1$

where an = nth term, a1 = first term , r = common ratio and n = term position

given ratio : 1/3 , first term : 2 , given this we want to find the 9th term

to do so we simply plug in what we are given into the formula

recall formula : $a_n=a_1(r)^n^-^1$

define variables : a1 = 2 , r = 1/3 , n = 9

plug in values

a9 = 2(1/3)^(9-1)

subtract exponents

a9 = 2(1/3)^8

evaluate exponent

a9 = 2 (1/6561)

multiply 2 and 1/6561

a9 = 2/6561

7 0

2 years ago

13.

liubo4ka [24]

Answer:

6x +4 where x is amount for standard call

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Reuben is making a replica of the US flag for his school project.

Leno4ka [110]

P1=2.5+2.5+4.75+4.75=14.5 cm

0.5 cm - 1 in
2.5 cm - 5 in
4.75 cm - 9.5 in

P2=5+5+9.5+9.5=29 in

8 0

3 years ago