G = -3
-5(-3) - 13(-3) = 54
15 + 39 = 54
54 = 54
Answer:
C 201 and 770
Step-by-step explanation:
14 and 91 have a common factor of 7 - so not A
B No - as 7 is a factor of 14 and 581
D 12 and 105 are both divisible by 3
So its C
2-step equation scenario:
Bob wanted to purchase 2 hats and a pack of gum at one store; the pack of gum was $1.50, but the 2 hats did not have a price. Bob went to another store and found only 1 of the exact same hats that he found at the first store, and a the same pack of gum for a total of $30.
Question: what store has the better deal, where the total will be equal to the second store’s prices?
‘h’ = the hats
Here’s the equation:
2h+1.50=30.
Steps:
1.) Subtraction Property of Equality (inverse properties to combine like terms and define ‘h’): 2h=28.5. We subtracted +1.50 to cancel it out and move it to the other side of the = to combine like terms.
2.) Division Property of Equality (inverse property used to isolate ‘h’). 2h/2=28.5/2=14.25. We divided 2 from 2h to cancel it out and get h alone.
Therefore h=14.25.
This means that store 1 has the better deal, since 2(14.25)+1.50=30. So, Bob can have 2 hats and the pack of gum at store 1 for the same price as only 1 hat and a pack of gum at store 2.
The second one is the answer. Greater than or equal to is always circled in and you can use it like an arrow
Answer:
Ram: 21, Hari: 12
Step-by-step explanation:
To solve the problem, we can use the following notation. We call:
= Ram's age at present
= Hari's age at present
We know that:
- Ram is 9 years older than Hari --> mathematically, this can be written as
- Three years ago, Ram was two times as old as Hari was --> mathematically, this can be written as
where (r-3) is Ram's age 3 years ago, while (h-3) is Hari's age 3 years ago
Substituting eq.(1) into eq.(2), we find:
So, Hari's age is 12; therefore, Ram's age is