Ask question

Ask question

All categories

Nookie1986 [14]

3 years ago

7

Solve the system of equations by substitution. Write your solution as an ordered pair

2 answers:

sergejj [24]3 years ago

8 0

Solving it by substitution is:

4(3y-20)+8y=20: substitute the second equation into the first equation (hence the name solving by substitution)
12y-80+8y=20: distribute 4 to 3y and 4 to 20
20y-80=20: combine like terms (12y+8y)
20y=100: add 80 to 20
y=5: divide 100 by 20 and you get 5

:)

marshall27 [118]3 years ago

5 0

Answer: (-5,5)

Step-by-step explanation:

graphing the two equations on a calculator gets the point (-5,5)

You might be interested in

This chart shows the number of eggs laid each month by my pet chicken, Drakestail: During how many months of the year did Drakes

djyliett [7]

21

Anonymous has the correct months, but the average is (21 + 23 + 22 + 24 + 15)/5 =

21 eggs

7 0

3 years ago

Help thanks please<br> :)

mote1985 [20]

Answer:

C , 452.16 cm :)

Step-by-step explanation:

good luck

6 0

3 years ago

Read 2 more answers

Solve this equation 2cos^2x-9cosx-5=0

Nesterboy [21]

2 (n π - i tanh^(-1)(sqrt(2/3))) should be the answer

6 0

3 years ago

A sports memorabilia collector has 3³ 1980 baseballcards and 4³ 1990 football cards. How can I write the number of baseball card

Grace [21]

27 baseball cards and 64 football cards.
${4}^{3} = 3 \times 3 \times 3$
${3}^{3} = 3 \times 3 \times 3$

4 0

3 years ago

Plz help me asap math isn't my thing

Salsk061 [2.6K]

Answer is option c.

you can see in graph as x increase from left to right that is positive side

function reachs from 0 to down negative y axis and it will go more and more down and so will reach negative infinity

7 0

3 years ago