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murzikaleks [220]
3 years ago
11

The chain of a necklace is worth $100.The four emeralds in the necklace are worth 2/3 as much as the one diamond.The necklace co

sts $2320.What is the cost of the necklace with 3 emeralds and 2 diamonds?
Mathematics
1 answer:
Serggg [28]3 years ago
8 0
$2320 - $100 =$2220 .
$2220 - $200 =$2020 (that was emeralds)
$2020 - $300 = $1720 (diamonds )
$1720 - $200 - $200 = 1320
$1320 - 300 = 1020
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John spent about 12 hours at a water park. He estimated he spent about 40% of the time waiting in line. What would be a reasonab
White raven [17]
40% of 12 hours would be 4.8 hours
4 0
3 years ago
Leo deposited $2494.05 in an account that earned 2.5% interest compounded weekly for 13 years. After 13 years, how much had Leo
erastova [34]

Answer: 3432.56

Step-by-step explanation: Everything is on the attached file, enjoy!!! If you have any further questions, just ask me, I'd be glad to help!

Alert: IDK if it is attached, so sorry if it isn't i'll try to explain it.

2490.05 is the initial value how much leo started with.

2.5% + 100% = 1.025

weekly =13weeks

multiply 1.025 by the sqrt of 13 since that's the amount of weeks.

that gets you 3432.56.

4 0
3 years ago
Explain how knowing 1+7 helps you find the sum for 7+1
maksim [4K]
Because there both addition
6 0
3 years ago
Find the value of r in (4, r), (r, 2) so that the slope of the line containing them is −53
Elan Coil [88]

Answer:

C) 7

===========================================

Work Shown:

Use the slope formula

m = (y2-y1)/(x2-x1)

Plug in the given slope we want m = -5/3 and also the coordinates of the points. Then isolate r

m = (y2-y1)/(x2-x1)

-5/3 = (2-r)/(r-4)

-5(r-4) = 3(2-r) .... cross multiplying

-5r+20 = 6-3r

-5r+20+5r = 6-3r+5r .... adding 5 to both sides

20 = 6+2r

20-6 = 6+2r-6 ....subtracting 6 from both sides

14 = 2r

2r = 14

2r/2 = 14/2 .... dividing both sides by 2

r = 7

The slope of the line through (4,7) and (7,2) should be -5/3, let's check that

m = (y2-y1)/(x2-x1)

m = (2-7)/(7-4)

m = -5/3

The answer is confirmed

7 0
3 years ago
Read 2 more answers
What is the inverse of the function 9y - 6 = 3x ?
IgorC [24]

Answer:

Option (2)

Step-by-step explanation:

Given function is,

9y - 6 = 3x

y = \frac{3x+6}{9}

To find the inverse of the given function,

1). Substitute x in place of y and y in place of x.

x = \frac{3y+6}{9}

2). Now we have to solve this equation for the value of y.

9x = 3y + 6

3y = 9x - 6

y = (3x - 2)

Therefore, inverse of the given function is y = (3x - 2)

Option (2) will be the answer.

8 0
4 years ago
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