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Marrrta [24]
3 years ago
11

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Mathematics
2 answers:
Sliva [168]3 years ago
6 0

Answer: The Answer is 64

Step-by-step explanation: there  isnt  much really to it

lianna [129]3 years ago
4 0

Answer:

The answer is 64

Step-by-step explanation:

If you need me to explain my answer let me know.

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Casey was twice as old as his sister 3 years ago. Now he is 5 years older than his sister. How old is Casey?
Margarita [4]
Let x is Casey's sister age.
<span>3 years ago: 
</span><span>Casey was twice as old as his sister: 2a - 3
Now: 
</span><span>he is 5 years older than his sister: a + 5

2a - 3 = a + 5
subtract a to both sides
2a - 3 -a = a + 5 - a
simplify
a - 3 = 5
add 3 to both sides
a - 3 + 3 = 5 + 3
simplify
a = 8

His sister age is 8 years old now.
</span>Now: 
he is 5 years older than his sister: a + 5 = 8 + 5 = 13
<span>
proof: 
so 3 years ago,
his sister age: 8 - 3 = 5
Casey age 3 years ago:
13 - 3 = 10 (</span>C<span>asey was twice as old as his sister 3 years ago</span>)
<span>
Answer:
Casey is 13 years old now.


</span>
4 0
4 years ago
Read 2 more answers
Explain your answer !!<br><br> Have a great day <br><br> Will give brainlst
Len [333]

Answer:

1

Step-by-step explanation:

8 0
3 years ago
Can anyone solve this question ?? I have to find the value of unknown sizes​
zimovet [89]

Answer:

Step-by-step explanation:

50 plus 50 is 100 we know that the number  left that is 80 that is so a 40 and x 40 as well

6 0
3 years ago
A recipe calls for 1/1/2 teaspoons of cinnamon to make 2 dozen oatmeal cookies.
olga nikolaevna [1]

Answer:

45

Step-by-step explanation:

5 0
4 years ago
Jonathan is signing up for a gym membership with a one-time fee to join and then a monthly fee to remain a member. The monthly f
attashe74 [19]

Answer:

C(t) = 25+34.37t

Step-by-step explanation:

It is given that,

The monthly fee to be a member is $25 and the total cost of membership, including the joining fee, would be $300 for 8 months.

We need to write an equation for C in terms of t representing the total cost of the gym membership over t months.

At t=0, Jonathan pays $25 as joining fee.

Equation will be :

C(t) = Co+kt

Initially, Co = 25

C(t) = 25

At t = 8,

C(8) = 25 + k(8) = 300

8k = 275

k = 34.37

⇒ C(t) = 25+34.37t

Hence, this is the required equation.

4 0
3 years ago
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