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2 years ago

Someone plz help me plzzzzzz

Mathematics

1 answer:

Igoryamba2 years ago

7 0

Answer:

-12

Step-by-step explanation:

To solve for this question, you have to isolate the variable u. To do this, divide both sides by 7/4 to isolate the u. Then your equation should be u= -21 divided by 7/4. This would simplify to -21 times 4/7. This would get you -12. Hope this helps :)

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If f(x) = 8 – 10x and g(x) = 5x + 4, what is the value of (fg)(-2)?

Shkiper50 [21]

Answer:

Step-by-step explanation:

I'm going to assume you meant "what is the value of f(g(-2))?"

g(-2) = 5(-2) + 4 = -6

f(-6) = 8 - 10(-6) = 68

6 0

3 years ago

Will give brainliest!!

olga_2 [115]

Answer:

Step-by-step explanation:

3 0

3 years ago

Solve the equation: 7(x + 8) = 49

eduard

Answer:

-1

Step-by-step explanation:

1.)Reorder the terms:

7(8 + x) = 49

(8 * 7 + x * 7) = 49

(56 + 7x) = 49

2.)Solving

56 + 7x = 49

3.)Solving for variable 'x'.

4.)Move all terms containing x to the left, all other terms to the right.

5.)Add '-56' to each side of the equation.

56 + -56 + 7x = 49 + -56

6.)Combine like terms: 56 + -56 = 0

0 + 7x = 49 + -56

7x = 49 + -56

7.)Combine like terms: 49 + -56 = -7

7x = -7

8.)Divide each side by '7'.

x = -1

9.)Simplifying

x = -1

Hope this helps

plz like and brainy

4 0

3 years ago

3(-n+4)+5n=2n <br> a. n=3<br> b. no solution<br> c. infinitely many solutions

777dan777 [17]

Answer:

no solutions

Step-by-step explanation:

3(-n+4)+5n=2n

Distribute

-3n +12 +5n = 2n

2n+12 = 2n

Subtract 2n from each side

12 = 0

This is never true so there are no solutions

4 0

3 years ago

Read 2 more answers

Prove that 1/3 root2 is irrational

Stella [2.4K]

Step-by-step explanation:

Let us assume that 1/2+root 3 is rational . So 1/2+root 3 = a/b where a and b are irrationals. since rhs is a rational number root 3 should be also rational .

6 0

3 years ago