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2 years ago

Evaluate 4a + 7b + 3a – 2b for a = 4 and b = 3. 48 43 57 41

Mathematics

2 answers:

Natali [406]2 years ago

7 0

4(4) + 7(3) + 3(4) - 2(3)
(16 + 21) + (12 - 6)
37 + 6
43
Your answer is B. 43

Reil [10]2 years ago

7 0

Your answer is b hope that helps

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Arlecino [84]

Answer:

2 2/5

Step-by-step explanation:

−1 3/5 / −2/3

=2 2/5

(Decimal: 2.4)

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2 years ago

Please please use explanation with answer

KIM [24]

Answer:

$\large\boxed{\theta=-\dfrac{\pi}{4}+k\pi\ or\ \theta=k\pi}\ for\ k\in\mathbb{Z}$

Step-by-step explanation:

$\tan^2\theta+\tan\theta=0\\\\\tan\theta(\tan\theta+1)=0\iff\tan\theta=0\ \vee\ \tan\theta+1=0\\\\\tan\theta=0\Rightarrow \theta=k\pi\ \text{for}\ k\in\mathbb{Z}\\\\\tan\theta+1=0\qquad\text{subtract 1 from both sides}\\\\\tan\theta=-1\Rightarrow\theta=-\dfrac{\pi}{4}+k\pi\ \text{for}\ k\in\mathbb{Z}$

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2 years ago

Which is the most likely first step needed to solve this equation?

Vanyuwa [196]

Answer:

C. Add 15 to both sides

Step-by-step explanation:

Given equation:

99x – 15 = 45

To solve:

Step 1: Add 15 to both sides:

⇒ 99x – 15 + 15 = 45 + 15

⇒ 99x = 60

Step 2: Divide both sides by 99:

⇒ 99x ÷ 99 = 60 ÷ 99

⇒ x = 60/99

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1 year ago

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Radda [10]

Answer:

$x\sqrt{1-x}+5\sqrt{1-x}$

Step-by-step explanation:

$(x+5)(\sqrt{1-x} )\\\\=\left(\sqrt{1-x}\right)\left(x+5\right)\\\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac\\\\a=\left(\sqrt{1-x}\right),\:b=x,\:c=5\\\\=\left(\sqrt{1-x}\right)x+\left(\sqrt{1-x}\right)\times\:5\\\\=x\left(\sqrt{1-x}\right)+5\left(\sqrt{1-x}\right)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\\\=x\sqrt{1-x}+5\sqrt{1-x}$

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3 years ago

PLEASE HELP MEEEEEE f(x)=4x + 5 f (-3)

Dafna1 [17]

Answer:

evaluate the function with -3 as x value

Step-by-step explanation:

4(-3) + 5

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2 years ago

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