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vodka [1.7K]
3 years ago
11

Simplify 7(x - 2) - 4x + 9​

Mathematics
2 answers:
DaniilM [7]3 years ago
7 0
First, multiply. 7x-14-4x+9. Now, add the like terms. 3x-5.
dusya [7]3 years ago
6 0

Answer:

3x - 5

Step-by-step explanation:

Perform the indicated multiplication.  We get:

7x - 14 - 4x + 9.

Combining like terms, we get 3x - 5

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Please answer... I Got Pointsss
DaniilM [7]

Answer:

its is 50 i am sure of it

Step-by-step explanation:

because 50 is the middle and it is directly on the middle also i have the same school program and i pased that test

7 0
3 years ago
-2/7x=4/7 how to check your answer
Ymorist [56]

Answer:

1)Evaluate the left-hand side expression at the given value to get a number.

2)Evaluate the right-hand side expression at the given value to get a number.

3)See if the numbers match.

Sorry if wrong

7 0
3 years ago
Consider the following problem: a box with an open top is to be constructed from a square piece of cardboard, 3 feet wide, by cu
Alecsey [184]

Answer:

) See annex

b) See annex

x  =  0,5 ft

y =  2 ft   and

V = 2 ft³

Step-by-step explanation:  See annex

c) V = y*y*x

d-1) y = 3 - 2x

d-2) V = (3-2x)* ( 3-2x)* x   ⇒ V = (3-2x)²*x    

V(x) =( 9 + 4x² - 12x )*x    ⇒   V(x) = 9x + 4x³ - 12x²

Taking derivatives

V¨(x) = 9 + 12x² - 24x

V¨(x) = 0              ⇒   12x² -24x +9 = 0     ⇒  4x² - 8x + 3 = 0

Solving for x (second degree equation)

x =[ -b ± √b²- 4ac ] / 2a

we get    x₁  =  1,5       and    x₂ =  0,5

We look at y = 3 - 2x    and see that the value x₂ is the only valid root

then

x  =  0,5 ft

y =    2 ft   and

V = 0,5*2*2

V = 2 ft³

7 0
3 years ago
Answer for 6x-31=11x+64
PIT_PIT [208]
6x - 31 = 11x + 64
6x cancels out and you take 6x away from 11x
-31 = 5x + 64
64 cancels out and you take 64 away from -31
-95 = 5x
Divide both sides by 5
-19 = x
6 0
3 years ago
F(x)=x^2 what is g(x)
timofeeve [1]
Need more info. What are you trying to look for?
3 0
3 years ago
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