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oee [108]
3 years ago
10

The sum of two numbers is 92. their difference is 20. what are the two numbers?

Mathematics
1 answer:
viva [34]3 years ago
8 0

Answer:

56 and 36 are the numbers.

Step-by-step explanation:

Let the numbers be x and y,

x + y = 92

x - y = 20

On solving,

y = 36

x = 56

:)

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Please help im so confused (need asap)
docker41 [41]

\qquad\qquad\huge\underline{{\sf Answer}}

Let's solve ~

\qquad \tt \dashrightarrow \:10 {x}^{2}  - 25x + 15 = 0

\qquad \tt \dashrightarrow \:5(2x {}^{2}  - 5x + 3) = 0

\qquad \tt \dashrightarrow \:2x {}^{2}  - 5x + 3 = 0

\qquad \tt \dashrightarrow \:2x {}^{2}  - 3x - 2x + 3 = 0

\qquad \tt \dashrightarrow \:x(2x - 3) - 1(2x - 3) = 0

\qquad \tt \dashrightarrow \:(x - 1)(2x - 3) = 0

Therefore, the required factors are ~ (x - 1) and (2x - 3)

So, correct choice is B

6 0
2 years ago
The life span of a battery is the amount of time the battery will last. The distribution of life span for a certain type of batt
slavikrds [6]

Answer:

0.0548

Step-by-step explanation:

The distribution of life span for a certain type of battery is approximately normal with mean 2.5 hours and standard deviation 0.25 hour.

To find the the probability that a selected battery will have a life span of at most 2.1 hours, we need to first determine the z-score for x=2.1 hours using

z =  \frac{x -  \mu}{ \sigma}

We substitute the values to get:

z =  \frac{2.1 - 2.5}{0.25}  =  - 1.6

We read read -1.6 from the standard normal distribution table to get:

P(X≤2.1)=0.0548

7 0
3 years ago
Solve for y 3x + 1/5y = 7
jarptica [38.1K]
I think it is y=35 because u multiply both sides by 5 move the variable right then the final solution is
4 0
2 years ago
What is 20/7 as a mixed number in simplest form?
cricket20 [7]
It would be: 20/7 = 2 6/7

In short, Your Answer would be 2 6/7

Hope this helps!
5 0
3 years ago
Help pls ty! it means a lot! look at image attached pls! :)
slamgirl [31]

Answer:

its B

Step-by-step explanation:

7 0
2 years ago
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