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alexgriva [62]
3 years ago
5

Miss Parker invested a certain amount of money at 9.2% interest and another amount, $700 more than the first, at 10.4%. If the t

otal annual interest is $425.60, how much money is in each investment
Mathematics
1 answer:
Sphinxa [80]3 years ago
5 0

Answer:

$1800 and $2500

Step-by-step explanation:

Let he invested a total of  $P and$( P+700) in each investment so according to question

9.2*P*1+10.4*(P+700)*1= 42560

19.6P+ 7280= 42560

19.6P = 42560-7280= 35280

P=$ 1800

So, he invested $1800 and $2500 respectively.

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Phone, it can expect to sell 1,000-2x phones.
Andreas93 [3]

Answer:

Step-by-step explanation:

The x intercepts are 0 and

1000 - 2x = 0              given condition

1000 = 2x                   Divide by 2

500 = x

So the two intercepts are 0,0 and 500,0

The intercepts mean that for (0,0) the phone company hasn't charged anything, yet. For 500,0 the phone company can sell a single phone -- not when they cost 500 dollars apiece.

The answer to the B part is completing the square.

r(x) = - 2x^2 + 1000x

r(x) = -2(x^2 - 500x )

1/2 ( 500) = 250

250^2 is what you put inside the bracket's to complete the square.

r(x) =  - 2(x^2 - 500x + 250^2) + 2*250^2

r(x) = -2(x - 250)^2 + 2*62500

r(x) = - 2(x - 250)^2 + 125000

They should sell their phones at 250 dollars a piece. The total revenue is 125000. Your graph shows exactly the same thing.

4 0
2 years ago
How to rewite this x+4y=-4 in form y=mx+b
Alex
x+4y=-4\\
4y=-x-4\\
y=-\frac{1}{4}x-1
3 0
3 years ago
Read 2 more answers
I NEED HELP BY TODAY PLEASE
andreev551 [17]

Answer: m∠ABC = m∠CED; Corresponding Angles Theorem

Step-by-step explanation:

i took the test

4 0
3 years ago
Luis wants to know how much he will have available to spend on his trip to Belize in three years if he deposits $2700 today at a
ad-work [718]

Use the compound amount formula:  A = P(1+r)^t

Here, A = $2700(1+0.07)^3 = $3307.62

Luis will have accumulated $3307.62 to spend on his trib to Belize.

8 0
3 years ago
Find the slope of the line that passes through each pair of points.<br> 5. G(–3, 2), H(7, 2)
sladkih [1.3K]

Answer:

y=0x+2 meaning the slope is equal to 0

Step-by-step explanation:

If you think about this question you'll see that our two points have the same y coordinate

This means that the slope is equal to 0

so we have

y=0x+b  

If we plug in -3 for x and set the equation equal to 2 we can find b

0+b=2

b=2

so we have

0x+b=y

5 0
3 years ago
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