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beks73 [17]
2 years ago
9

Gabriela walked to a toy store around noon and , after browsing for 2222 minutes, decided to buy a race car for $9.22. Gabriela

handed the salesperson $9.22 for her purchase.
How much change did Gabriela receive?
Mathematics
1 answer:
Yanka [14]2 years ago
5 0
No change. She gave the salesperson exactly the right amount to buy the racecar.
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Help please! Could you explain it too?
Anettt [7]

Answer:

a) not proportional

b) proportional; k = -\frac{3}{5}

Step-by-step explanation:

a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).

Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.

Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.

b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.

y = -(3/5)x fits with y = kx, with k being -3/5

3 0
2 years ago
Each block in tons neighborhood is 3/8 mile long if he walks 4 1/2 blocks how far does he walk
kramer
4 1/2 x 3/8 = 1.69 miles
4 0
3 years ago
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I need to know the answer to those two equations
sladkih [1.3K]
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3 0
3 years ago
I need help on number 2.
evablogger [386]

<em>Greetings!</em>

This is how your double number line should look:

 (lbs)     0      1       2      3     4      5

              ↓-----↓-----↓-----↓-----↓-----↓

              0    3.5    7    10.5  14   17.5          (dollars)

Hope this helps!  

6 0
3 years ago
What do the common denominator of 512 and 2/5​
Margarita [4]
2560/5 would be 512 as a fraction with the same denominatir
8 0
3 years ago
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