3 years ago

Write two expressions where the solution is 28

Mathematics

1 answer:

umka2103 [35]3 years ago

6 0

Some expressions are:

7 times 4 equals 28
20 plus 8 equals 28
10 plus 18 equals 28
25 plus 3 equals 28

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Nifal earned 9$ for washing two cars .He recived $1 more for the second car.How much was he paid for washing each car?Which two

Sveta_85 [38]

Answer:

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

$x + y = 9$

$y = x+1$

Then, by eliminating y:

$x + (x+1) = 9$

$2\cdot x + 1 = 9$

Now, let is clear $x$ :

$2\cdot x = 8$

$x = 4$

Nifal received $ 4 for washing the first car.

The earning for the second car is: ( $x = 4$ )

$y = x +1$

$y = 4 + 1$

$y = 5$

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

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3 years ago

X According to a survey, 60 sixth grade students at Madison Middle School attended a summer camp. This is 30% of the entire sixt

Liula [17]

Answer: total is 200

Step-by-step explanation:

30% = 60

10% = 60/3 = 20

100% = 200

7 0

2 years ago

Select the correct answer.

77julia77 [94]

I’m pretty
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4 0

3 years ago

Please help me with 1,2,3,show me how you get the answers and show me the steps for 1,2,3,please do not send me link write it ri

Natali [406]

Answer:

Step-by-step explanation:

1. ok so you need to use Pythagoras which is a^2 + b^2 = c^2

substituting 16 and 12 into 'a' and 'b' you get 16^2 + 12^2 = c^2

256 + 144 = c^2

400 = c^2 (square root each side to get ride of the square)

c = 20cm

2. doing the same thing you get c = 22.36 in

3. again doing it you get c = 15Ft

Hope this helps!

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2 years ago

HELP PLEASE AND THANK YOU????!!!

TiliK225 [7]

10 coins. 70 divided by 7equals 10

6 0

2 years ago

Read 2 more answers