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maria [59]
2 years ago
12

-4r -2r +5 what does that equal

Mathematics
1 answer:
VashaNatasha [74]2 years ago
8 0

Answer:

-6r +5

Step-by-step explanation:

-4r -2r +5

Combine like terms

(-4r-2r) +5

-6r +5

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Brian is 2 years older than Malachy. Caroline is 8 years younger than Malachy. If the total of their ages is 66, how old is the
SVETLANKA909090 [29]

Answer:

The eldest of them is Brian and he is 24 + 2 = 26 years old.

Step-by-step explanation:

Let

Malachy age = a

Brian age = a + 2

Caroline age = a - 8

Total of their age = a + (a + 2) + (a - 8)

66 = a + (a + 2) + (a - 8)

collect like terms

66 = a + a + 2 + a - 8

66 = a + a + a - 6

3a = 66 + 6

3a = 72

divide both sides by 3

a = 72/3

a = 24

Malachy age is 24 . Caroline is 24 - 8 = 16 years old.

The eldest of them is Brian and he is 24 + 2 = 26 years old.

7 0
3 years ago
Write a situation that could be represented by the algebraic expression below: <br> 2a + 3b
Damm [24]

Answer:

You have 2 mystery boxes and you add them to 3 mystery bags. Each has a different amount of things represented by a and b.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What type of line would the equation<br> y &lt; 7x + 8 have?<br> A dashed line or<br> A solid line?
-BARSIC- [3]

Answer:

A dashed line

Step-by-step explanation:

Because it is just a less than sign but if it was a less than or equal to it would be a solid line.

Hope That Helped :)    

5 0
2 years ago
Find the value of x.
Artemon [7]

{5}^{2}  +  {x}^{2}  =  {8}^{2}

25 +  {x}^{2}  = 64

Subtract both sides 25

25 - 25 +  {x}^{2}  = 64 - 25

{x}^{2}  = 39

Thus :

x =  \sqrt{39}

x = 6.245

6 0
2 years ago
Which two expressions are
Oxana [17]

Answer:

9(2p-18) and 2(9p-18)

Step-by-step explanation:

6 0
3 years ago
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