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quester [9]
3 years ago
12

Simplify the algebraic expression 2(a + 2ab) + 4 - ab and find its value when a = 4 and b = -2

Mathematics
1 answer:
WARRIOR [948]3 years ago
7 0

Step-by-step explanation:

2(a + 2ab) + 4 - ab

= 2a + 4ab + 4 - ab

= 3ab + 2a + 4.

When a = 4 and b = -2,

we have 3ab + 2a + 4

= 3(4)(-2) + 2(4) + 4 = -24 + 8 + 4 = -12.

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Hello here is a solution :
<span>(-4x^3)(-3x^2) = 12x^5</span>
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3 years ago
Shaquil needs to borrow $400. the loan company charges him $80 in fees for the loan. shaquil calculates that the annual percenta
Mila [183]

The  term of shaquil's loan will be 29 days approximatly.

We have given that,

Principle amount (p) = $400

Rate (r)= 250% = 2.5

Interest = $80

t = time (in days) = t/365

<h3>What is the formula simple interest?</h3>

I=prt

r=\frac{I}{rt}

2.5 = \frac{80\times 365}{400\times t}

t= \frac{80\times 365}{400\times 2.5}

t=\frac{73}{2.5}\\ \\t=29.2

t = 29.2

t = 29 days

Therefore option (B) is correct.

Therefore the  term of shaquil's loan will be 29 days approximatly.

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brainly.com/question/26011426

5 0
2 years ago
What is 7/9 times 21/28 as a simplified fraction
Serga [27]

Answer: 7/12!

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7 0
3 years ago
URGENT HELP PLEASE!
Vaselesa [24]

Answer:

(a) x=\dfrac{\pi}{8},\dfrac{3\pi}{8},\dfrac{9\pi}{8},\dfrac{11\pi}{8}

(b) x=\dfrac{3\pi}{2},\dfrac{\pi}{6},\dfrac{5\pi}{6}

Step-by-step explanation:

It is given that 0\leq x\leq 2\pi.

(a)

\sqrt{2}\sin 2x=1

\sin 2x=\dfrac{1}{\sqrt{2}}

\sin 2x=\dfrac{\pi}{4}

2x=\dfrac{\pi}{4},\dfrac{3\pi}{4},\dfrac{9\pi}{4},\dfrac{11\pi}{4}     [\because \sin x=\sin y\Rightarrow x=n\pi+(-1)^ny]

x=\dfrac{\pi}{8},\dfrac{3\pi}{8},\dfrac{9\pi}{8},\dfrac{11\pi}{8}

(b)

\csc^2 x-\csc x-2=0

\csc^2 x-2\csc x+\csc x-2=0

\csc x(\csc x-2)+1(\csc x-2)=0

(\csc x+1)(\csc x-2)=0

\csc x=-1\text{ or }\csc x=2

\sin x=-1\text{ or }\sin x=\dfrac{1}{2}         [\because \sin x=\dfrac{1}{\csc x}]

x=\dfrac{3\pi}{2}\text{ or }x=\dfrac{\pi}{6},\dfrac{5\pi}{6}

Therefore, x=\dfrac{3\pi}{2},\dfrac{\pi}{6},\dfrac{5\pi}{6}.

5 0
3 years ago
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stepladder [879]
We'll need to find the 1st and 2nd derivatives of F(x) to answer that question.

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4 years ago
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