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iris [78.8K]
3 years ago
9

Solve the equation 10r – 2 = 28 for r.

Mathematics
1 answer:
gulaghasi [49]3 years ago
7 0

Answer:

r=3

Step-by-step explanation:

First we add 2 to both sides.

That leaves us with 10r=30

Then we can divide both sides by 10

r=3

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F) Two numbers are in the ratio 5:4. If they differ by 12, what are the numbers?
Iteru [2.4K]

Answer:

First number = 60 and another number = 48

Step-by-step explanation:

Let two numbers are 5x and 4x.

The two number are differ by 12. We need to find the numbers.

ATQ,

5x-4x = 12

x = 12

Now first number = 5x

= 5(12)

= 60

Other number = 4x

= 4(12)

= 48

Hence, the numbers are 60 and 48.

8 0
3 years ago
A 2-kg sausage is divided into several 100-g portions. How many portions are there?
Mademuasel [1]

Answer:

20 portions

Step-by-step explanation:

2 kg = 2000 g

2000 / 100 = 20

Hope this helped! :)

7 0
3 years ago
A bakery sells 4 dozen cupcakes every 3 hours. If the bakery is open 8 hours each day, how many days does it take to sell 640 cu
zmey [24]

5 days does it take to sell 640 cupcakes.

Given:

A bakery sells 4 dozen cupcakes every 3 hours.

If the bakery is open 8 hours each day.

4 dozen cupcakes = 4*12 cupcakes

= 48 cupcakes

48 cupcakes = 3 hours

divide by 3 on both sides

3hours/3 = 48/3 cupcakes

1 hour = 16 cupcakes

Number of cupcakes for 8 hours = 8 * 16 = 128 cupcakes.

128 cupcakes sells in one day.

To sell 640 cupcakes = 640/128

= 5 days.

Therefore 5 days does it take to sell 640 cupcakes.

Learn more about the bakery and cupcakes here:

brainly.com/question/14466478

#SPJ1

8 0
11 months ago
True or False
BigorU [14]

Answer:

1. false

2. true

3. true

4. true

5. true

6. false

Step-by-step explanation:

sub to tapl :L

3 0
2 years ago
Write a variable expression for each word phrase: <br><br> the product of c and 3
mash [69]
Variables are symbols that are used to represent a number in an expression or equation. 

There's one word phrase here, and it's answer is: c*3

If you need help with another one, just let me know! :)
7 0
3 years ago
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