Answer correctly pls

Mathematics

1 answer:

bija089 [108]3 years ago

6 0

Answer:

The expression that represents the total number of raffle tickets sold by Trudy and Shaun is 3x/2 + 3.

Step-by-step explanation:

Let's represent Shaun for S and Trudy for T.

We know that:

=> S = x tickets sold
=> T = x/2 + 3

The question is asking for the total number of raffle tickets Shaun and Trudy have sold altogether. Let's add both the sellers.

S + T = x + x/2 + 3
=> S + T = 2x/2 + x/2 + 3
=> S + T = 3x/2 + 3

Hence, the expression that represents the total number of raffle tickets sold by Trudy and Shaun is 3x/2 + 3.

Hoped this helped.

$BrainiacUser1357$

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3 years ago

Help!!!

Jobisdone [24]

Answer:

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Step-by-step explanation:

t = 0 corresponds to the number of new cars purchased in 1998. If that is so, we can determine t ( time ) by making our quadratic equation here equal to 15,000 - considering that we want the year the number of cars reaches this value. t here is only the number of years to reach 15,000 cars, so we would have to add that value to 1998, to see the year that the cars will reach 15,000.

The " set up " should look like the following quadratic equation -

20t² + 135t + 3050 = 15,000 - Isolate 0 on one side,

20t² + 135t - 11950 = 0 - From here on let us solve using the quadratic equation formula,

$t=\frac{-135+\sqrt{135^2-4\cdot \:20\left(-11950\right)}}{2\cdot \:20}:\quad \frac{-27+\sqrt{38969}}{8}$ ,

$t=\frac{-135-\sqrt{135^2-4\cdot \:20\left(-11950\right)}}{2\cdot \:20}:\quad -\frac{27+\sqrt{38969}}{8}$ ... now as you can see we have two solutions, but time can't be negative, and hence our solution is the first one - about 21.3 years. 1998 + 21.3 = ( About ) The year 2019. Therefore, in the year 2019 the number of new cars purchased will reach 15,000.