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yuradex [85]
4 years ago
11

Simplify the expression 7y+3x+3-2y+6

Mathematics
1 answer:
pishuonlain [190]4 years ago
8 0

Answer:

5y + 3x + 9

Step-by-step explanation:

Whenever something is multiplied by the same variable, you can combine the coefficients. In this case, first you'd move the values with the same variable next to each other, for simplicity:

7y-2y+3x+3+6

Then, combine like terms.

5y+3x+3+6

5y+3x+9

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Multiply and reduce to lowest form 1 2/5×1 7/10
LuckyWell [14K]
The answer is 2 19/50.
First of all you have to convert the mixed numbers into improper fractions. So, 1 2/5 is equal to 7/5 and 1 7/10 is equal to 17/10. Next you multiply the denominators by the denominators and multiply the numerator by the numerator. 7 times 17 is 119 and 5 times 10 is 50. So the fraction is 119/50. You convert the improper fraction into a mixed number, which is 2 19/50.
6 0
3 years ago
Determine if the number is written in scientific notation. if not correct it.
Vanyuwa [196]

The number shown here is written in scientific notation since it’s composed of a decimal that is between 1 and 10 in this case 2.98 and a power of 10 in this case 10 to the 7th power. Therefore, this number is written in proper scientific notation.

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3 years ago
Find what % of 70 is 12​
marshall27 [118]

Answer:

Percentage Calculator: 12 is what percent of 70? = 17.14.

Step-by-step explanation:

plzzzzzzz Mark my answer in brainlist

and follow me

4 0
3 years ago
Find an odd number with 3 digits such that all the digits are different and add up to 15. The difference between the first two d
Serjik [45]

Answer:

The three digit number = 951

Step-by-step explanation:

Let suppose the numbers are:

= abc

According to given condition:

a+ b + c = 15  -------------eq1

Also, given the difference between the first two digit = the difference between the last two digits:  

==> l a-b l = l b-cl  

==> (a-b) = (b-c)  

==> (a+c) = 2b

Now we will substitue in eq1

==> a+ b + c = 15

==> 2b + b = 15

==> 3b = 15

Dividing both sides by 3 we get:

b =5

a + c = 2b

a+ c = 10

a = 10 -c ..........(2)

We know that"  

(a-b) = (b-c)

==> a > b+c

==> a > 5 + c

==> 10 -c > 5 +c  

==>5 > 2c

==> 2.5 > c

As c is an odd number so c will be equal to 1

c = 1

a = 10 -1

a = 9

The three digit number = 951

The hundred digit is greater than the sum of the tens and ones digits

i hope it will help you!

6 0
3 years ago
A plane is flying at the height of 5000 meter above the sea level. at a particular point, it is excatly above a submarine floati
AnnyKZ [126]

Answer:

3800 meters

Step-by-step explanation:

3 0
3 years ago
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