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Y_Kistochka [10]
3 years ago
6

5a+5b - 2a +2b -2a- 6b​

Mathematics
2 answers:
Nesterboy [21]3 years ago
4 0

Answer:

a + b

Step-by-step explanation:

Combine like terms: 5a - 2a - 2a = 1a; which can be written as simply "a"

continue with b: 5b + 2b - 6b = 1b: which can be written simply "b"

These terms are both positive so you can add to get your final simplified version: a + b

Hope this helps (:

8090 [49]3 years ago
3 0

Answer:

so circle your coefficent with a varible separate a and d and and first then subtract  

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You have $814 that you want to share equally between 5 charities.
kifflom [539]

Answer:

give each charity $60

Step-by-step explanation:

$814 to divide equally to 5 charities.

From 814  if we give   -100,  -100, -100, -100, -100, we have left 314 to split in 5

the most useful next step is to give each charity $60

From $814  if we give   -100, -100, -100, -100, -100

                                         -60, -60, -60, -60, -60  

we have left now:

814 -5*100 -5*60 = 814-500-300 = $14 left to split among the 5 charity.

6 0
2 years ago
The sum of the digits of a certain two-digit number is 7. Reversing its digits increase the number by 9. What is the number?
Elis [28]
Let the two numbers be x and y.

According to your question;

x + y = 7
10y + x = 10x + y + 9

By equation 1 ; x = 7-y

Substituting the value of x ;

10y + ( 7 -y) = 10(7-y) + y + 9

9y + 7 = 70 -10y + y + 9

9y + 7 = 70 - 9y + 9

=> 18y = 70 -7 + 9
=> 18y = 72
=> y = 4

Substituting for x ;

x = 7 - y
=> x = 7 -4
=> x = 3

Thus, x = 3 and y = 4;
=> The number is 34.
5 0
3 years ago
Read 2 more answers
Solve each equation algebraically. 2/3x( - 4)=20
baherus [9]

Answer:

Step-by-step explanation:

2/3x(-4)=20

2/3x*4=20

8/3x=20

8/3x/8/3= 20/8/3

0.83 but 3 is repeting

8 0
3 years ago
Y is directly proportional to X^2<br> If y = 45 when x = 3 find<br> y when x = 5
postnew [5]

Answer:

Y = 125

Step-by-step explanation:

Y is directly proportional to X^2

Mathematically,

Y ∝ X²

Y = kX²

Where k = Constant of Proportionality

Step 1

If y = 45 when x = 3

We solve for k

Y = kX²

k = Y/X²

k = 45/3²

k = 45/9

k = 5

Step 2

find y when x = 5

Y = kX²

k = 5, X = 5

Hence,

Y = 5 × 5²

Y = 125

6 0
3 years ago
Fatima paid a $50. Initiation fee to join a gym. She also pays a fee of $25 per month. Write an expression that shows how much F
Morgarella [4.7K]
When it says per month, it means to multiply. In this case, the expression would be;

25x+50 

So however many months Fatima has spent at the gym, you would multiply that times 25 and add the initiation fee. Hope this helps. 

3 0
3 years ago
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