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3 years ago

A number decreased by four is negative eleven

Mathematics

2 answers:

svp [43]3 years ago

4 0

Answer:-7

Step-by-step explanation:

Let that number be x

x-4=-11

x=-7

agasfer [191]3 years ago

4 0

Answer: -7-4=-11

Step-by-step explanation:

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Answer:

I believe it's 2x²-8x + 1

Step-by-step explanation:

Combine like terms

2x²- 3x - 5x + 1

2x²- 8x + 1

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4 years ago

What is the mathematical name for quadrilateral ABCD

34kurt

It is a square because its sides are the same length.

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4 years ago

a winding river is modeled br r(x)=x^3+4x^2+4x+12. bridges will be built along the x axis, as needed, to cross the river. how ma

jeyben [28]

The Winding river is modeled by r(x)= $x^{3}+ 4 x^{2}+4 x+12$

As bridges will be built along x-Axis to cross the river.

so,the bridges work as a tangent to river.

r'(x)= $3x^{2}+8 x+4$

So , r'(x)=0

→ $3x^{2}+8 x+4$ =0

→3x²+6 x+ 2 x+4=0

→3 x(x+2)+2(x+2)=0

→(x+2)(3 x+2)=0

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3 years ago

Each signal that a certain ship can make is comprised of 3 different flags hanging vertically in a particular order. How many un

Molodets [167]

Answer:

Step-by-step explanation:

This problem solution involves permutation to calculate number of arrangements of flags. The reason of using permutation in this scenario is that it is mention in the statement that flags are hanging in a particular order and when order is concern we use permutation. According to permutation definition nPr=n!/(n-r)! and so, the unique signals that are made by using 4 flags are 4P3=4!/(4-3)!=24. Here n=total number=4 and r=number chosen=3.

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3 years ago

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Advocard [28]

ANSWER

D. x=55

EXPLANATION

The given radical equation is

$\sqrt{x - 6} + 3 = 10$