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egoroff_w [7]
3 years ago
15

DVD cases are sold in packages of 15. Padded mailing envelopes are sold in packets of 4.

Mathematics
1 answer:
arsen [322]3 years ago
5 0

Answer:

Step-by-step explanation: you want to divide the price of eatch to the pacets???

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You repay a bank $480 in three months for a loan. What are your monthly payments to the bank?
insens350 [35]

Answer:

160 dollars per month

Step-by-step explanation:

Well you know the total amount paid is 480 dollars and payments are made once a month for three months.

Divide 480 by three to find the amount paid per month

480/3=160

160 dollars per month

7 0
3 years ago
What is necessary to determine the z-score for a raw score in a particular set of scores?.
Xelga [282]

Answer:

See below

Step-by-step explanation:

The mean score and the standard deviation are needed

7 0
2 years ago
Please answer it correctly and please show work please help me I need it
tamaranim1 [39]

Answer:

the equation is

y = 0.75x

And,  the constant of proportionality is 0.75

Step-by-step explanation:

The computation is shown below:

Given that

4y = 3x

And,

12y = 9x

Here the equation that represent proportional relationship is

4y = 3x

Divide both sides by 4

y = 3x ÷ 4

Now

12y = 9x

divides both sides by 12

y = 9 ÷ 12x

y = 3 ÷ 4x

y = 0.75x

so the equation is

y = 0.75x

And,  the constant of proportionality is 0.75

4 0
3 years ago
Question Help
lorasvet [3.4K]

Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream =Speed \times time =(s-4) \times \frac{30}{60}

Downstream speed = s+4

So, Distance traveled in downstream = Speed \times time =(s+4) \times \frac{20}{60}

So, (s-4) \times \frac{30}{60}=(s+4) \times \frac{20}{60}

30s-120=20s+80

10s=200

s=20

Hence The speed of the boat is 20 km/hr

6 0
3 years ago
U<br>Po<br>RU<br>2<br>0<br><br><br>What is this?​
seraphim [82]
I don’t know could you do a picture
6 0
2 years ago
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