Make a ten or a hundred to add mentally 339 123.

Answers

Answer 1

Answer: 339,323 is the answer because i chose 200 as the hundered.

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The number 5 is a prime b composite...

Answers

The number 5 has no factors except '1' and itself. That's the definition of a prime number.

Answer:

it is prime.

No number can be neither prime nor composite (maybe 0

No number can be both prime and composite

Step-by-step explanation:

What is the answer for r+11+8r=29?

Answers

The value of r is 2 in the equation r+11+8r=29.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equation is r+11+8r=29

r plus eleven plus three times of r equal to twenty nine.

In the equation, r is the variable.

Add the like terms in the equation.

9r+11=29

Isolate the r term by subtracting 11 from both sides

9r=29-11

9r=18

Divide both sides by 9

r=2

Hence, the value of r is 2 in the equation r+11+8r=29.

To learn more on Equation:

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The answer is r=2 because you add the r's together and get 9r so then the problem is 9r+11=29. You subtract 11 from 29 and now the problem is 9r=18, now you divide 9 from 18 and get 2.

Cheddar cheese costs £7.50 for 1kg
Marie buys 200g of cheese
How much does she pay

Answers

1kg = 1000g
1000 divided by 5 = 200
7.50 divided by 5 = 1.5
= £1.50

(-2a-4b-6c) - (-a - 2b +3c)

Answers

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▹ Answer

-a - 2b - 9c

▹ Step-by-Step Explanation

(-2a - 4b - 6c) - (-a - 2b + 3c)

Remove parentheses

-2a - 4b - 6c - (-a - 2b + 3c)

Collect like terms

-a - 4b - 6c + 2b - 3c

Final Answer

-a - 2b - 9c

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

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Answer: -a - 2b -9c

Step-by-step explanation:

-2a - (-a) = -a

-4b - (-2b) = -2b

-6c - (3c) = -9c

-a - 2b - 9c

A three-dimensional figure with two parrallel, congruent bases that are polygons

Answers

That's a prism. What kind depends on what polygon the bases are; if they're triangles, it's a triangular prism, if they're pentagons, it's a pentagonal prism, etc.

Which number has only two factors ?
21
23
25
27

Answers

23 has only two factors 1 and 23

Hope this helps

The answer is 27 it gas 2. Factors

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