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BigorU [14]
2 years ago
14

Solve, using linear combination.

Mathematics
1 answer:
joja [24]2 years ago
3 0

Answer: x= y= 2

Step-by-step explanation:

3

x

−

y

+

2

x

+

y

=

10

5

x

=

10

,

and clearly,

x

=

2

We substitute the value back in the equations to find y, and clearly, y =2.

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Look at pic I need help!!!! :(
Novosadov [1.4K]

Answer: x=12

Step-by-step explanation:

5x-15=2x+21(AIA)

3x-15=21

3x=36

x=12

7 0
3 years ago
Which of the following numbers is a perfect number (Hint: try to use the
Nitella [24]
C. 496 is the perfect number
3 0
3 years ago
The sum of the first 100 positive whole numbers is 5050. What is the sum of the first 100 positive odd whole number?
Rufina [12.5K]

The series of odd numbers is:

1, 3, 5, 7, 9, 11, 13, ....

If you observe this series, it is an Arithmetic Series with first term as 1 and common difference of 2. Common difference is defined as the difference between two consecutive terms of the series. So by using the formula of sum of an Arithmetic Series, we can find the sum of first 100 positive odd whole numbers.

The formula for the sum of an Arithmetic Series is:

S_{n}=\frac{n}{2}(2a_{1}+(n-1)*d)

Here,

n = number of terms = 100

a₁ = first term = 1

d = Common Difference = 2

Using the values, we get:

S_{100}=\frac{100}{2}(2(1)+99*2)\\   \\  S_{100}=10000

Thus, the sum of first 100 positive odd whole numbers is 10,000.

4 0
3 years ago
Unit rate 20kg and 10$
Nana76 [90]
2 kilograms per dollar
6 0
3 years ago
Read 2 more answers
PLEASE PROVIDE THE FORMUALS! THANK YOU SO MUCH!!
swat32
•Using the formula the first term is a1 = −3
•Using the formula the second term is a2 = −1
•Using the formula the third term is a1 = 6
•Common difference formula:
a2 - a1 = (-1) - (-3) = 2
8 0
2 years ago
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