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3 years ago

Evaluate the expression for a = 5, b = 11, and c = 3. cb − a2 A. 8 B. 46 C. 301 D. 286

Mathematics

1 answer:

Vitek1552 [10]3 years ago

6 0

The answer is a.8
3x11-5x5= 33-25=8

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Solve the equation 1/2x+14 - 9/x+7= -6

Phoenix [80]

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$\text{Answer:}\ c.\ x=-\dfrac{67}{12}$

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3 years ago

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Please help! And explain.

wariber [46]

$\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta r^2}{2}\qquad 
\begin{cases}
\theta=\textit{angle in radians}\\
r=radius\\
----------\\
r=5\\
\theta=\frac{\pi }{4}
\end{cases}\implies A=\cfrac{\frac{\pi }{4}\cdot 5^2}{2}\\\\
-----------------------------\\\\
A=\cfrac{\frac{\pi }{4}\cdot 25}{2}\implies A=\cfrac{\frac{25\pi }{4}}{2}\implies A=\cfrac{\frac{25\pi }{4}}{\frac{2}{1}}\implies A=\cfrac{25\pi }{4}\cdot \cfrac{1}{2}
\\\\\\
\boxed{A=\cfrac{25\pi }{8}}$

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4 years ago

1. If 4.75x = 12.35, what is the value of x? 2. What is 3x +2+ 4x - 1 after combining like terms?

eimsori [14]

Answer:

1. x = 2.6

2. 7x + 1

Step-by-step explanation:

Given:

4.75x = 12.35

Find x

4.75x = 12.35

Divide both sides by the coefficient of x, that is 4.75

4.75x / 4.75 = 12.35 / 4.75

x = 2.6

Check

4.75x = 12.35

4.75(2.6) = 12.35

12.35 = 12.35

Given:

3x + 2 + 4x - 1

Combine like terms

3x + 4x + 2 - 1

7x + 1

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3 years ago

300 hotdogs and hamburgers total. Hotdogs cost $2. Hamburgers cost $3. How many hamburgers? How many hotdogs?

kompoz [17]

Answer:

Step-by-step explanation:

75:50 = $300

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3 years ago

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Divided each ingredient by 2

Fudgin [204]

Answer:

1/8, 1/4, 1/2, 1/2, 1/8 plus 1 tablespoon, 3/8, 1/16, 1/2, 1/8, 1/4

Step-by-step explanation:

multiply the denominator by 2 for each one because fractions are smaller as the number gets bigger.

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3 years ago

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