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Gala2k [10]
3 years ago
11

X(X + 8) = 9 Algebra 2

Mathematics
2 answers:
pentagon [3]3 years ago
7 0

Answer:

x = -9, 1

Step-by-step explanation:

x (x + 8 )= 9

x^2 + 8x = 9

x^2 + 8x - 9 = 0

(x + 9)(x - 1) = 0

x = -9, 1

Hope this helps!

Alenkinab [10]3 years ago
5 0

Answer:

x = 3 and x = 0

Step-by-step explanation:

A way to solve is simplifying the given equation:

X^2 + 8x = 9

So

x = 3 and x = 0

3^2 + 8(0) = 9

9 + 0 = 9

9 = 9

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Lin's sister has a checking account. If the account balance ever falls below zero, the bank charges her a fee of $5.95 per day.
VladimirAG [237]

Answer: No, the bank will not keep charging her the $5.95 after the deposit is made.

Step-by-step explanation:

Today, Lin's sister's balance is -$2.67

She gets charged $5.95 per day.

There are 14 days until she can charge some money in the bank account, so the bank will charge $5.92 14 times

So her balance after 14 days will be:

Balance = -$2.67 - $5.95*14 = -$85.97

When she charges the $430 in the account, her balance will be:

Balance = -$85.97 + $430 = $344.03

So now she has a positive balance, which means that the bank does not charge her anymore.

5 0
3 years ago
Point M is the midpoint of segment QR. If QM = 16 + x and MR = 2(x + 2), find the length of QR.
hodyreva [135]
If <span>point M is the midpoint of segment QR then QM = MR</span>

16 + x = 2(x+2)
16 + x = 2x + 4
16 - 4 = 2x - x
12 = x

If x = 12 then
QR = 2*QM = 2(16+x) = 2*(16+12) = 2 * 28 = 56 
3 0
4 years ago
logan drov from new orland to nashvill to visit friends his speed limit is 60 miles per hour if logans driving for the trip was
Alina [70]

Answer:

540 miles

Step-by-step explanation:

60 times 9

4 0
3 years ago
Jessie has a container that contains 18 3/4 cios of ice cream. How many 1/3-cup servings of ice cream are in the container
ladessa [460]

Hi there!

18 × \frac{3}{4} = amount of ice cream in container

13.5 = amount of ice cream in container


Let's replace the number of cups by "C" :

13.5 = C × \frac{1}{3}

Isoltate "C" by dividing each side of the equation by \frac{1}{3}


40.5 = C


Which means that your answer is : There are 40.5 1/3-cup servings of ice creamin the container!


There you go! I really hope this helped, if there's anything just let me know! :)

7 0
3 years ago
If QR = 18, RS = x -11, and QS = 2x - 11, what is QS?
monitta

Answer:

QS =25

Step-by-step explanation:

QR + RS = QS

18 + (x-11) =2x-11

7 +x =2x -11

18=x

Plug in x

2(18) -11

36-11

QS=25

18 + (18-11) = 2(18)- 11

18+ 7 = 36 -11

25= 25

True

8 0
4 years ago
Read 2 more answers
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