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damaskus [11]
3 years ago
5

Keith has $500 in a saving account at the beginning of the summer. He wants to have at

Mathematics
2 answers:
Solnce55 [7]3 years ago
7 0

Answer:

12 weeks

Step-by-step explanation:

x=# of weeks

500-25x\geq200

-500        -500

____________

-25x    \geq   -300

-25           -25

x\leq 12 weeks

zalisa [80]3 years ago
5 0

Answer:

12 weeks

Step-by-step explanation:

25x = 300

so 25 times what equals 300, or the amount he can spend before going under 200 in his account.

25 (times) 12 = 300

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Jace's car used 14 gallons to travel 378 miles. How far can he travel on 13 gallons?
nata0808 [166]

Answer:

351 miles

Step-by-step explanation:

14 gallons for 378 miles  = 1 gallon for 27 miles

1 * 13 gallons = 27 * 13 miles

13 gallons = 351 miles

6 0
2 years ago
What is the recursive formula of the arithmetic sequence 0,11,22,33,
ArbitrLikvidat [17]

Answer:

f(1)=0

f(x+1)=f(x)+11

7 0
3 years ago
Solve the system of equations.<br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%3D220x-160%7D%20%5Catop%20%7By%3
Leni [432]

\begin{cases} y=220x-160\\ y=20x^2-400 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\textit{\Large y}}{220x-160}~~ = ~~20x^2-400} \\\\\\ -160=20x^2-220x-400\implies 0=20x^2-220x-240 \\\\\\ 0=20(x^2-11x-12)\implies 0=x^2-11x-12 \\\\\\ 0=(x-12)(x+1)\implies x= \begin{cases} 12\\ -1 \end{cases}

\dotfill\\\\ x=12\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(12)-160}\implies y=2480 \\\\\\ x=-1\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(-1)-160}\implies y=-380 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (12~~,~~2480)\qquad (-1~~,~~-380)~\hfill

4 0
2 years ago
i have 537 cookies and i need to divide them into 12 equal groups. how many cookies are in each group
katrin [286]
If you divide 537 in to 12 groups. each group would have 44 cookies and you would have 9 left.
5 0
3 years ago
The regular price of a baseball hat is $15.65. If Julio buys the baseball hat on sale for 20% off the regular price, how much ch
larisa [96]
Begin by multiplying $15.65 by 0.20 to find what 20% of the regular price is. This gives you 3.13, which in this situation means $3.13.
To find the price with discount subtract 15.65-3.13. This gives you $12.52.
To find out the change, subtract 20-12.52. This gives you $7.48.
So, he will receive $7.48 in change.
Hope this helps!
8 0
3 years ago
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