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vladimir2022 [97]
4 years ago
6

If x+y = -1, and xy= -12, what is the value of (x+3) (y+3) ?

Mathematics
1 answer:
9966 [12]4 years ago
7 0

Answer:

Here are my hints. You can solve it yourself

1/ xy = -12      -->      x = -12/y

2/ (-12/y) + y = -1      -->     -(12/y) + (y²/y) = -1    -->    -12 + y² = -y   -->    y²+y-12=0

3/ From y²+y-12=0 we can find y then use y to find x and then do your

(x+3) * (y+3)

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Find each percent of the markup. $11.5 marked up to $25. Round to the nearest percent.
soldi70 [24.7K]
Percent markup=amountmarkedup/original times 100

amountmarkedup=25-13.5.5=11.5
original=13.5

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8 0
3 years ago
Is -9 a solution of -9f=90-f
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Answer:

f = -11.25

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-9f = 90 - f

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4 years ago
3.
lilavasa [31]

Answer:

32

Step-by-step explanation:

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3 years ago
Cliff Branch bought a home with a 10.5% adjustable rate mortgage for 30 years. He paid $9.99 monthly per thousand on his origina
vichka [17]
I'm Unsure, But Here's What I Found.

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4 0
4 years ago
Read 2 more answers
Jocelyn just accepted a job at a new company where she will make an annual salary of $70000. Jocelyn was told that for each year
Oksanka [162]

Answer:

$80,500

55,500 + 1,500t

Step-by-step explanation:

The question is an arithmetic progression series

Where,

a= first term

d= common difference

n= number of terms

a = $70,000

d= $1,500

n= 8 years

8th term = a + (n-1) d

= 70,000 + (8-1)1500

= 70,000 + 7(1500)

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Jocelyn salary after 8 years is $80,500

Solve for when n = t

t th term = a + (n-1)d

= 70,000 + (t - 1)1500

= 70,000 + 1,500t - 1,500

= 55,500 + 1,500t

t th term = 55,500 + 1,500t

4 0
3 years ago
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