Its algebra for 7th grade

Mathematics

1 answer:

Pavlova-9 [17]4 years ago

4 0

Every year he owes Drake $3.50 on top of whatever he already owed
After the first year, he owes Linda $103 + $3.09. After the 2nd year, he owes $3.18 and the 3rd year is 3.28. Every year Linda will go up one cent more. After one year it is 9 cents added and then 10 cents added so the next year it will be 11 cents added.
After 30 years Bill will owe Drake 10,867.50
103.50*3.50*30 = 10,867.50
After 30 years Bill owes Linda 10,691.40
103*3.46*30 = 10,691.40
After 30 years Bill owes Drake more money so 4th choice

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WILL GIVE BRAINLEST!!!!!!!!!!!!!! ANSWER ASAP!!!!!!!!!!!!

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

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3 0

3 years ago

Substiute y=3x-15 4x+2y=22

Nostrana [21]

You can solve it by replacing the Y in the 2nd equation with the solved Y in the first.

4x + 2(3x-15)= 22

that should give you...

4x + 6x - 30 = 22

then combine like terms...

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now we need to get X alone so add 30 to each side....

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now divide both sides by 10..
X = 52\10

both are divisible by 2...

X = 26\5

you should be done unless you need Y as well then go back to the first and plug in what you found for X...

Y = 3(26÷5)- 15

and that should give you Y.

a 2nd method you can make your own answer by making x = 0 ..

Y= 3(0) -15

Y= -15

now put that in the 2nd for Y...

4x+ 2(-15) = 22...

4x-30= 22

add 30 to both sides..

4x = 52

divide by 4....

X = 13

now take this to the first for x...

Y= 3(15) - 15

Y = 30

you can check your work by plugging in the two on top and see if the final is the same..

30 = 3(15) - 15

the 2nd way is faster though of course..

anyway X= 13 Y= 30

5 0

4 years ago

What are the solutions of x2 - 2x +37 = 0 ?

DIA [1.3K]

hay that no solution because the root is irrational... and this is my answer