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3 years ago

What Is the product of the polynomials below? (7x^2+2x+4)(2x+5)

Mathematics

2 answers:

Mandarinka [93]3 years ago

5 0

Answer:14x^3+39x^2+18x+20

Step-by-step explanation:

(7x^2+2x+4)(2x+5)

14x^3+35x^2+4x^2+10x+8x+20

Add like terms

14x^3+39x^2+18x+20

Gnoma [55]3 years ago

4 0

Answer:

14x^3+39x^2+18x+20

Step-by-step explanation:

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Solve for x. -1/5 (x - 4) = -2 Enter your answer in the box. x = ________

Lena [83]

Answer: x=14

Step-by-step explanation:Simplify both sides of the equation(Distribute),Subtract 4/5 from both sides.Multiply both sides by 5/(-1).

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2 years ago

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|b|+b^3;b=-2 evaluate the expression

saveliy_v [14]

Answer:

-6

Step-by-step explanation:

$| - 2| = 2 \\ {( - 2)}^{3} = ( - 2)( - 2)( - 2) = ( - 8) \\ \\ | - 2 | + {( - 2)}^{3 } = 2 - 8 = - 6$

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3 years ago

Which line is a graph of the equation: 2x + 5y = -10?

Lady bird [3.3K]

Answer:

Step-by-step explanation:

2x + 5y = - 10 Subtract 2x from both sides

5y = -2x - 10 Divide by 5

y = -2x/5 - 10/5

y = 0.4x - 2

The slope is minus so the line is going from lower right to upper left as B and D are doing.

The y intercept is - 2. B goes through + 2 so it is not the answer.

The answer is D

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2 years ago

The area of a circle is 616 m square find the radius 5 equals to 22/7

astra-53 [7]

Step-by-step explanation:

$here \: is \: your \: solution : - \\ \\ GIVEN \: \: -:- \\ \\ = > \: area \: of \: circle \: = 616 \: m {}^{2} \\ \\ \ = > pi = 22 \div 7 \\ \\ = > we \: need \: to \: find \: radius \: \\ \\ = > area \: of \: circle \: = \pi \: r {}^{2} \\ \\ = > \: \pi \: r {}^{2} = 616 \: m {}^{2} \\ \\ = > \: r {}^{2} \times (22 \div 7) = 616 \\ \\ = > \: r {}^{2} =( 616 \times 7) \div 22 \\ \\ = > \: r { }^{2} = 4312 \div 22 \\ \\ = > r {}^{2} = 196 \\ \\ = > \: r = \sqrt{196} \\ \\ = > \: r = 14 \: \: \: (ANSWER✓✓✓) \\ \\ HOPE \: IT \: HELPS \: YOU \: (◕ᴗ◕✿)$

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2 years ago

Simplify (5x2 + 3x + 4) − (2x2 − 6x + 3)

dangina [55]

Answer is 7x^2-3x+7
hope this helps

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3 years ago

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