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LuckyWell [14K]
3 years ago
8

7x = 90 +22 Solve this problem

Mathematics
1 answer:
prisoha [69]3 years ago
5 0

Answer: X=16

Step-by-step explanation: Add 90 and 22 and you will get 112. Since the beginning of the equation is "7x" which is multiplication you use Inverse Operations. So, you divide the sum, 112, by 7. Your answer will be 16.

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Why does the expression i to the power 4n+2 is always equal to -1​
Alexandra [31]

Answer:

See Below.

Step-by-step explanation:

We are given:

i^{4n+2}

Using exponent properties:

=i^{4n}\cdot i^2

Rewriting:

=(i^4)^n\cdot i^2

Since i⁴ = 1 and i² = -1:

=(1)^n\cdot -1

1 to any power is still 1:

=1\cdot -1 = -1

7 0
3 years ago
I am confused she never said what to do
Natalka [10]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Y varies inversely with x and x= 3 when y =10. What is the value of y when x=6?<br> k =<br> y=
iris [78.8K]

Answer: Y=20

Step-by-step explanation:

X is doubled from 3 to 6 meaning that y is also doubled.

Double 10 is 20 so y=20.

7 0
2 years ago
How do I solve it because it’s really difficult
dybincka [34]

The solution of the equation is x= 3 and y = 2

Step-by-step explanation:

Given,

-3x-4y = -17 and

-x-3y = -9

The system of equation can be rewritten as

3x+4y = 17 ------eq 1 and

x+3y = 9 ------ eq 2

To solve for x and y

Multiplying eq 2 by 3 we get,

3x + 9y = 27

or, 3x = 27-9y

Putting this value of x into eq 1 we get,

27-9y +4y = 17

or, -5y = 17-27

or, -5y = -10

or, y = 2

Now put y=2 in eq 2 we get,

x = 9 - 3(2)

= 3

Hence the solution is x = 3 and y = 2

6 0
3 years ago
Angie baked 100 cookies and 20 brownies . she wants to split them into equal groups for the bake sale . each group must have the
Rainbow [258]
I would say for every 1 brownie, there are 5 cookies.
7 0
3 years ago
Read 2 more answers
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