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Olenka [21]
3 years ago
10

Christina is saving money to buy a bike that cost 189 he saves 99 so far he plans on saving $10 each week and how many weeks wil

l he have enough money to buy the bike use a bar diagram to solve arithmetically then use an equation to solve algebraically
Mathematics
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

9 weeks

Step-by-step explanation: you add 10 until you get 189 then you count how many times you added 10

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If you roll two fair six-sided dice, what is the probability that the sum is 5 or lower?
sesenic [268]
The possible combination are
2=1+1
3=1+2; 2+1
4=1+3; 2+2; 3+1

So the probability is 6/36=1/6

Hope this helped!
3 0
3 years ago
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Distribute expression -(5-b)
Sergio [31]

Answer:

-5+b or b-5

Step-by-step explanation:

3 0
3 years ago
Explain why it would not make sense to approximate 256 using the binomial theorem for the binomial (20 + 5)6.
Olenka [21]

The formula for the Binomial Theorem with a power 6 is as:

(x+y)^6=x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6

Thus, if we plug in 20 for x and 5 for y, our first term itself will be 20^6=64000000 which is much greater than 256 and thus it will not make any sense to use (20+5)^6 to approximate 256 using the binomial theorem.

Also, it will not make any sense to use (20+5)6 as that has no power and we know that Binomial Theorem makes use of Power. Anyway, (20+5)6=150\neq 256.

Our best bet here would be to use the equation with power 8:

(x+y)^8=x^8+8x^7y+28x^6y^2+56x^5y^3+70x^4y^4+56x^3y^8+28x^2y^6+7xy^7+y^8

and have x=1 and y=1 which will give us

(1+1)^8=1^8+8(1)^7(1)+28(1)^6(1)^2+56(1)^5(1)^3+70(1)^4(1)^4+56(1)^3(1)^8+28(1)^2(1)^6+7(1)(1)^7+(1)^8 =256

5 0
4 years ago
Read 2 more answers
Maria-Jose is a math tutor. She charges a one-time introduction fee of $25.00 and the cost of the tutoring sessions is shown bel
Feliz [49]

Answer:

y=6x+25

Step-by-step explanation:

y will be the whole cost. 6 is how many sessions you have and x is the cost of each of those sessions. The one time introduction fee is 25. you would add 25 plus 6 times the cost of sessions (x) and you would get your answer (y).

3 0
3 years ago
Find the slope (2,5) (9,3)
Otrada [13]

Answer:

-0.2857

Step-by-step explanation:

\frac{3-5}{9-2}  

= -2/7

= -0.2857

4 0
3 years ago
Read 2 more answers
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