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lys-0071 [83]
3 years ago
12

A store sells jump ropes. Each jump rope costs the same amount. During a sale, the store reduces the price of each jump rope by

$1.90. Marc spends $12.78 on 2 jump ropes at the sale price.
What was the price of 1 jump rope before the sale?
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
8 0
8.29 for one jump rope I believe someone correct me if I’m wrong hope this helps
Contact [7]3 years ago
8 0

Answer:

Each price was 2.59

Step-by-step explanation:

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7. The diagram shows a regular pentagon inscribed inside the rectangle. Find the values of x, y, and z.
Wewaii [24]
<span>regular pentagon sum of interior = (5 - 2) x 180 = 3 x 180 = 540
so
x = 540 / 5 = 108

180 - 108 = 72
y = 72/2 = 36

z = 180 - 90 - 36
z = 54

answer
x = 108, y = 36 and z = 54</span>
3 0
3 years ago
When a bactericide is added to a nutrient broth in which bacteria are​ growing, the bacteria population continues to grow for a​
baherus [9]

Answer:

a)  1296 bacteria per hour

b) 0 bacteria per hour

c) -1296 bacteria per hour

Step-by-step explanation:

We are given the following information in the question:

The size of the population at time t​ is given by:

b(t) = 9^6 + 6^4t-6^3t^2

We differentiate the given function.

Thus, the growth rate is given by:

\displaystyle\frac{db(t)}{dt} = \frac{d}{dt}(9^6 + 6^4t-6^3t^2)\\\\= 6^4-2(6^3)t

a) Growth rates at t = 0 hours

\displaystyle\frac{db(t)}{dt} \bigg|_{t=0}= 6^4-2(6^3)(0) = 1296\text{ bacteria per hour}

b) Growth rates at t = 3 hours

\displaystyle\frac{db(t)}{dt} \bigg|_{t=3}= 6^4-2(6^3)(3) = 0\text{ bacteria per hour}

c) Growth rates at t = 6 hours

\displaystyle\frac{db(t)}{dt} \bigg|_{t=6}= 6^4-2(6^3)(6) = -1296\text{ bacteria per hour}

3 0
3 years ago
Look At The Picture Please Help!<br>Please Tell Me The step by step on how to do it
Lina20 [59]

Answer:

18

Step-by-step explanation: 32/5.76

See how much 32 goes into 57

32 goes into 57: 1 time

1 times 32 is 32

32 - 57 is 25

Then bring down your 6 which now it will be 256

Now how much dose 256 go into 32

It would be 8: 8 x 32 is 256 - 256 = 0

So ur answer is 18



4 0
3 years ago
Answer 9 a and b and c
inn [45]
If she can only work 15 hours a week and earns $7 per hour, just multiply 7 by 15 and you'll have your answer :)
3 0
3 years ago
Need the answer for number 7 ASAP!!!!
cupoosta [38]
B is the answer because 60/ 12.50 equals 12/2.5 
3 0
3 years ago
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