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TiliK225 [7]
2 years ago
8

Evaluate the expression 3x² + 5x when x = 5​

Mathematics
1 answer:
vivado [14]2 years ago
3 0

x(3x+5) since we factorize it

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Answer:

$27 because it is 25% off. So, do 75% of $36.

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3 years ago
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Which of the graphs below correctly solves for x in the equation −x2 − 3x − 1 = −x − 4?
Tanzania [10]
We have 
−x²<span> − 3x − 1 = −x − 4

let 
f(x)=</span>−x² − 3x − 1
g(x)= −x − 4
the solution for
f(x)=g(x) is the intersection both graphs

using a graph tool
see the attached figure

the solution are the points
(-3,-1)
and
(1,-5)

8 0
3 years ago
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Must the product of three polynomials again be a polynomial?
melomori [17]

Answer:

Yes

Step-by-step explanation:

The product of three polynomials will be a polynomial regardless of the signs of the leading coefficients of the polynomials.

5 0
3 years ago
What is "the sum of twice a number and six is the same as three subtracted from the number itself"?
inysia [295]

Answer:

x=-1

Step-by-step explanation:

2x+6=3-x

Step 1: Simplify both sides of the equation.

2x+6=3−x

2x+6=3+(−x)

2x+6=−x+3

Step 2: Add x to both sides.

2x+6+x=−x+3+x

3x+6=3

Step 3: Subtract 6 from both sides.

3x+6−6=3−6

3x=−3

Step 4: Divide both sides by 3.

3x/3=−3/3

x=−1

Answer:

x=−1

4 0
3 years ago
a rally car course covers 51 5.97 miles .the winning car completed the course in 6.5 hours. what was the average speed of the wi
Artyom0805 [142]
Assuming the speed is in miles per hour, simply divide the total distance by time.
515.97/6.5
The answer is 79.38 miles per hour
5 0
3 years ago
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