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Art [367]
3 years ago
11

Which expression can be used to model the phrase “the sum of three and a number”?

Mathematics
1 answer:
Airida [17]3 years ago
5 0

Answer:

3+x

Step-by-step explanation:

because the word sum is only used in addition.

hope it helps! :)

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Three boys and four girls enter a contest at the local movie theater a randomly choose winner will be rewarded free movie ticket
geniusboy [140]

Answer:

4/7

Step-by-step explanation:

the probability that a girl will win free popcorn = number of girls / sum of boys and girls

sum of boys and girls  = 4 + 3 = 7

4/7

7 0
2 years ago
3(x − 2y) = −12(x + 2y)
miv72 [106K]

Answer:

15x-18y

Step-by-step explanation:

Distribute then combine like terms

6 0
3 years ago
A bird weighs 10 N and is standing 3 m up whats its GPE
umka2103 [35]

Answer:

30 J

Step-by-step explanation:

Given : -

Height ( h ) = 3m

Weight ( W ) = 10 N

To find : GPE = ?

Note : -

GPE is Gravitational Potential Energy.

It is expressed in Joules ( J ).

Formula : -

W = mg

mg = 10 N

Formula : -

GPE = mgh

GPE = 10 x 3

GPE = 30 J

Therefore,

A bird weighs 10 N and is standing 3 m, it's

GPE is 30 J.

5 0
3 years ago
Read 2 more answers
Suppose that 13 inches of wire costs 65 cents. At the same rate, how much (in cents) will 27 inches of wire costs.
Alex73 [517]
It will cost 135 cents
6 0
3 years ago
Read 2 more answers
Max builds rail fences. For 1 style of fence, each section uses 3 vertical, and 6 horizontal rails how many posts and rails does
daser333 [38]

Answer:

27 vertical posts and 36 horizontal rails

Step-by-step explanation:

If Max builds 1style of fence with each section having 3vertical posts and 6horizontal rails, to calculate the number of posts and rails that he need for a fence that will be 9 sections long, we will use the following equality;

For Posts:

1section = 3 vertical posts

9 sections = x

Cross multiply

x × 1 = 9× 3

x = 27

Hence Max will need 27vertical posts for a fence that is 9sections long

For the rail:

1 section = 6 horizontal rails

6 sections = y

Cross multiply

y× 1 = 6 × 6

y = 36

Hence Max will need 36 horizontal rails for a fence that is 9sections long.

In total Max will need 27 vertical posts and 36 horizontal rails for a fence that is 9sections long

5 0
3 years ago
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