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sergij07 [2.7K]
3 years ago
13

Please help.. I would like the explanation as well as the answer .

Mathematics
1 answer:
Tresset [83]3 years ago
5 0

Answer:

Step-by-step explanation:

The answer is 3

so let the no of books be = x

constant of proportionality is

C= \frac{y}{x}

C = \frac{6}{2}

c = 3

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If y is proportional to x and y = -15 when x= -20, what is the value of x when y = 12
ladessa [460]
I hope this helps you




y= -15 x= -20



y=12 x=?



?.-15=12.-20


?=12.20/15


?=16


x=16
3 0
4 years ago
Sue is upholstering a rectangular ottoman that measures 21 centimeters by 18 centimeters by 15 centimeters. What will be the tot
Anika [276]

Answer:

1926cm²

Step-by-step explanation:

Given

Dimension = 21cm by 18cn by 15cm

<em>The illustration in this question is to determine the surface area of the fabric and this is calculated using the surface area of a cuboid as follows:</em>

<em></em>

Surface\ Area =2(LB + LH + BH)

Where L, B and H are the dimensions.

So,

Surface\ Area = 2(21 * 18 + 21 * 15 + 18 * 15)

Surface\ Area = 2(378 + 315 + 270)

Surface\ Area = 2(963)

Surface\ Area = 2 * 963

Surface\ Area = 1926cm\²

<em>Hence, 1926 cm² of fabrics are needed to cover all surfaces.</em>

6 0
3 years ago
You are given a bag with 8 green marbles, 6 blue marbles, 14 yellow marbles, and 12 red marbles. Find the theoretical probabilit
AysviL [449]
A) 8/40 = 1/5
b) 12/40 or 6/20
c) 26/40 or 13/20
6 0
3 years ago
**Select all that apply**
Arte-miy333 [17]

Answer:

a and d

Step-by-step explanation:

8 0
3 years ago
An item is priced at $80. It is on sale for 20% off the regular price. What is the sale price?
Masja [62]
Regular Pirce = $80.

Discount = 20%

Discount = 20% x $80 = 0.2 x 80 = $16

Sale Price = 80 - 16 = $64

----------------------------------------------------
Answer: The Sale Price is $64.
----------------------------------------------------
4 0
3 years ago
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