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3 years ago

Use the Distributive Property to solve:

Mathematics

2 answers:

KatRina [158]3 years ago

7 0

Answer:

a:36

Step-by-step explanation: because (2+1) is in parentheses, you solve that first. 2+1=3 and 3x12=36

hope this helps!

8090 [49]3 years ago

3 0

Answer:

Step-by-step explanation:

This is beause 2+1 is 3 and 3 muliplied by 12 is 36 which is A

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an electronics store paid $51.94 for a dvd player. To make a profit the store charges the customer 154% of their cost. what does

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To make a profit. The store needs to make a profit. Buy something from Walmart cheap, sell it for 60% percent more to make a 'good' profit.

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3 years ago

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Answer:

Step-by-step explanation:

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At 8:00 am, here's what we know about two airplanes: Airplane #1 has an elevation of 80870 ft and is decreasing at the rate of 4

wel

Let's begin by listing out the information given to us:

8 am

airplane #1: x = 80870 ft, v = -450 ft/ min

airplane #2: x = 5000 ft, v = 900ft/min

We must note that the airplanes are moving at a constant speed. The equation for the airplanes is given by:

$\begin{gathered} E=x_1+vt----1 \\ E=x_2+vt----2 \\ where\colon E=elevation,ft;x=InitialElevation,ft; \\ v=velocity,ft\text{/}min;t=time,min \\ x_1=80,870ft,v=-450ft\text{/}min \\ E=80870-450t----1 \\ x_2=5,000ft,v=900ft\text{/}min \\ E=5000+900t----2 \end{gathered}$

We equate equations 1 & 2 to get the time both airlanes will be at the same elevation. We have:

$\begin{gathered} 5000+900t=80870-450t \\ \text{Add 450t to both sides, we have:} \\ 900t+450t+5000=80870-450t+450t \\ 1350t+5000=80870 \\ \text{Subtract 5000 from both sides, we have:} \\ 1350t+5000-5000=80870-5000 \\ 1350t=75870 \\ \text{Divide both sides by 1350, we have:} \\ \frac{1350t}{1350}=\frac{75870}{1350} \\ t=56.2min \\ \\ \text{After }56.2\text{ minutes, both airplanes will be at the same elevation} \end{gathered}$

The elevation at that time (when the elevations of the two airplanes are the same) is given by substituting the value of time into equations 1 & 2. We have:

$\begin{gathered} E_1=80870-450t \\ E_1=80870-450(56.2) \\ E_1=80870-25290 \\ E_1=55580ft \\ \\ E_2=5000+900t \\ E_2=5000+900(56.2) \\ E_2=5000+50580 \\ E_2=55580ft \\ \\ \therefore E_1\equiv E_2=55580ft \end{gathered}$

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9 months ago

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2 years ago

Adair suggests that they package together the fries and soda in a combo for a $0.75 discount. lf the student council pays $0.85

Ira Lisetskai [31]

Answer:

$58.50

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It is given that the student council pays

For per french fry = $0.85

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Therefore, they will make $58.50 if they sell 45 combos.

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