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GaryK [48]
3 years ago
8

Of the 15-year-olds at a karate school, 8 have black belts and 14 have brown belts. Among the 16-year-olds, 7 have black belts a

nd 12 have brown belts. Which age group has a lower ratio of black belts to brown belts? 15-year-olds 16-year-olds neither; the ratios are equivalent Submit
Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
15yr olds have the lower ratio
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Leila works as a tutor for an hour and as a waitress for an hour. This month, she worked a combined total of hours at her two jo
kupik [55]

Answer:

E(t)  =  5t +672     ($)

Step-by-step explanation:     INCOMPLETE QUESTION

FROM GOOGLE

she earns 12 $ per hour as tutor and 7 $ per hour as waitress, this month she worked a combined of 96 hours at her two jobs

Let be t the numbers of hours Leila works as tutor this month

Answer:

If Leila worked t hours as tutor then, she worked (96 - t) hours as waitress

E(t)  =  12 * t  +  7 * (96-t)

E(t)  =  12t   +  672 - 7t

E(t)  =  5t +672     ($)

7 0
3 years ago
What is the y cordinate of the solution<br>solve 8 and 9<br>​
Flauer [41]

Answer:

8) The y coordinate of the solution: 4

9) Average of change from x = 2 to x = 4: 11

Step-by-step explanation:

8)

y = 2x + 2

y = x^2 + 3

So

x^2 + 3 = 2x + 2

x^2 - 2x + 3 - 2 = 0

x^2 - 2x + 1 = 0

(x - 1)^2 = 0

x - 1 = 0

x = 1

Plug in x = 1 into either those 2 equations to find y

y = 2(1) + 2 = 4

or

y = (1)^2 +  3 = 1 + 3 = 4

Answer:

The y coordinate of the solution is 4

9)

p(x) = x^2 + 5x - 2

p(2) = 2^2 + 5(2) - 2 = 4 + 10 - 2 = 12

p(4) = 4^2 + 5(4) - 2 = 16 + 20 - 2 = 34

Average of change from x = 2 to x = 4:

[p(4) - p(2)]/[(x(4) - x(2)] = (34 - 12)/(4-2) = 22 /2 = 11

Answer:

Average of change from x = 2 to x = 4 :11

4 0
3 years ago
Help me solve this please ill give good rating...
blagie [28]

Answer: For the first part, her total savings would be $88, and for the second part, (let's pretend s = the total savings) the equation would be s = 40 + w x 6.

Step-by-step explanation: As for the first part, we would need to multiply her money per week times the amount of weeks she works. We can do this by simply multiplying the amount she makes (6) by the amount of weeks she works (8), resulting in 48, but we still have to add that number to the amount she already has, or 40, making $88 in total, as for the second part, this does a great job of explaining the reasoning behind that as well. Hope this answered your question!

8 0
3 years ago
What is the surface are of the triangle prism
stepladder [879]
You can find the area of a triangular prism by putting it into a bet and finding the area of all sides then adding them together
5 0
3 years ago
Help if possible pls
Alexus [3.1K]

Answer: Oh heaven nah

Step-by-step explanation: Lord have mercy

7 0
3 years ago
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