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PIT_PIT [208]
3 years ago
5

A first number plus twice a second number is 13. Twice the first number plus the second totals 14. find the numbers​

Mathematics
1 answer:
sashaice [31]3 years ago
4 0

Answer:

the first number is 5 the second number is 4

Step-by-step explanation:

first number = x

second number = y

X+2y=13 given this isolate x  x = 13-2y

2x+y=14 substitute 13-2y for x

2(13-2y)+y=14

26-4y+y=14

-3y=-12

y=4 taking this number substitute into either equation above

x+2(4)=13

x+8=13

x=5

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Answer:

3 baseball + 9 football  9+3 = 12

3 out of 12 were base ball

3/12=0.25

60*0.25 = 15

so there would be 15 baseball cards

Step-by-step explanation:

7 0
2 years ago
1 /6 of a pile of marbles are red ones, and out of those red marbles 3 /4 of them are big marbles. What fraction of the entire p
mihalych1998 [28]

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4/5 of them are big red marbles

Step-by-step explanation:

8 0
3 years ago
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eimsori [14]
X^2/9 +7/3


~I believe this is the answer.
4 0
3 years ago
The equation V = 16300 (0.94)^t represents the value (in dollars) of a car t years after its purchase. Use this equation to comp
Dafna1 [17]

Solution:

Given:

V=16300(0.94)^t

The value of a car after t - years will depreciate.

Hence, the equation given represents the value after depreciation over t-years.

To get the rate, we compare the equation with the depreciation formula.

\begin{gathered} A=P(1-r)^t \\ \text{where;} \\ P\text{ is the original value} \\ r\text{ is the rate} \\ t\text{ is the time } \end{gathered}

Hence,

\begin{gathered} V=16300(0.94)^t \\ A=P(1-r)^t \\  \\ \text{Comparing both equations,} \\ P=16300 \\ 1-r=0.94 \\ 1-0.94=r \\ r=0.06 \\ To\text{ percentage,} \\ r=0.06\times100=6\text{ \%} \\  \\ \text{Hence, } \\ P\text{ is the purchase price} \\ r\text{ is the rate} \end{gathered}

Therefore, the value of this car is decreasing at a rate of 6%. The purchase price of the car was $16,300.

5 0
1 year ago
Please help me out :( these confuse me
Pavel [41]

Answer:

The answer to your question is : 33.3 (Rounded).

Step-by-step explanation:

I got this answer by dividing 19.6 by 20, which gave me 0.98.

Then, I multiplied 0.98 by 34, which gave me 33.32.

After rounding, 33.3 is your answer.

Hope this helped!!

8 0
3 years ago
Read 2 more answers
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