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alekssr [168]
3 years ago
9

The sum of two numbers is 21. The difference between them is 5. What are the two numbers?

Mathematics
1 answer:
Nata [24]3 years ago
5 0

Answer: 13 and 8


Step-by-step explanation:

13+8=21

13-8=5

All I did was trial and error. Plus, it helps to set up an equation : x+x=21, x-x=5

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A machine produces 576 units in 18 hours at this rate how many will it produce in 28 hours
olga2289 [7]

Answer: 896

Step-by-step explanation:

Let's use a rule of three here.

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Solve for x;

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One Friday night, two large groups of people called Weston Taxi Service. The first group requested 2 sedans and 1 minivan, which
muminat

Answer:

Sedan: 4 passengers

Minivan: 6 passengers

Step-by-step explanation:

We can write the following system of equations:

\begin{cases}2s+1m=14 \\2s+2m=20\end{cases}, where s represents the number of people a sedan can seat and m represents the number of people a minivan can seat.

Subtracting the first equation from the second, we have:

2s+2m-(2s+1m)=20-14,\\\\m=6

Now plug in m=6 in any of the equations to solve for s:

2s+1(6)=14, \\2s=8, \\s=4

Verify that the solution pair (4, 6) works:

2(4)+1(6)=14\: \checkmark \\2(4)+2(6)=20 \: \checkmark

Therefore, a sedan can hold 4 passengers and a minivan can hold 6 passengers.

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Step-by-step explanation:

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