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ale4655 [162]
3 years ago
12

Fractions 2 3/4 + 4 4/5 + 3 8/9 =

Mathematics
2 answers:
zysi [14]3 years ago
7 0

2  3/4 + 4  4/5 + 3  8/9 =

= (2x4+3)/4 + (4x5+4)/5 + (3x9+8)/9

= ⁴⁵⁾11/4 + ³⁶⁾24/5 + ²⁰⁾35/9

= (495 + 864 + 700)/180

= 2059/180

iragen [17]3 years ago
6 0

Answer:

11 79/80

Step-by-step explanation:

2+4+3+   3/4+4/5+8/9

=9+    3(5*9) +4(4*9) + 8(5*4)/4*5*9

=9 +     135+ 144+160/180

=9+      439/180

=9+2 +   79/80

=11 79/80

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Find the difference -1/10 - 8/10<br><br>-9/10 <br><br>9/10 <br><br>-7/10<br><br> 7/10
TEA [102]

The answer to this would be A: -9/10. Hope this helps!

5 0
3 years ago
Read 2 more answers
Solve for x in -14x⁴ - 8x³ = 32​
gayaneshka [121]

Answer:

No solutions

Step-by-step explanation:

There can be no solutions to your question

7 0
3 years ago
7x - 20 = 2x - 3(3x + 2)
kirill [66]

Answer:

7x-20=2x-3(3x+2)

We move all terms to the left:

7x-20-(2x-3(3x+2))=0

We calculate terms in parentheses: -(2x-3(3x+2)), so:

2x-3(3x+2)

We multiply parentheses

2x-9x-6

We add all the numbers together, and all the variables

-7x-6

Back to the equation:

-(-7x-6)

We get rid of parentheses

7x+7x+6-20=0

We add all the numbers together, and all the variables

14x-14=0

We move all terms containing x to the left, all other terms to the right

14x=14

x=14/14

x=1

   

   

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen
Alisiya [41]
The answer is <span>2(–4y + 13) – 3y = –29

Step 1: Express </span><span>x from the second equation
Step 2: Substitute x into the first equation:

The system of equations is:
</span><span>2x – 3y = –29 
x + 4y = 13

Step 1: 
</span>The second equation is:    x + 4y = 13
Rearrange it to get x:         x = - 4y + 13

Step 2:
The first equation is:          2x – 3y = –29 
The second equation is:    x = - 4y + 13
Substitute x from the second equation into the first one:
2(-4y + 13) - 3y = -29

Therefore, the second choice is correct.
5 0
3 years ago
There are 24 girls in a class. The ratio of girls to boys is 3:8.
dangina [55]

Answer:

64 boys.

Step-by-step explanation:

There are 3 girls for every 8 boys.

24/3 = 8

8 * 8 = 64

7 0
3 years ago
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