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2 years ago

What is the total surface of the pyramid in square centimeters? A: 17.5 B:70 C:140 D:35

Mathematics

1 answer:

Airida [17]2 years ago

4 0

Answer:

C:140

Step-by-step explanation:

because 7 x 5 in the tiangle.

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What is the simplified form of (X/3-y/4)/(x/4+y/3) ? (6 points)

Fofino [41]

Option 2: $\frac{4x-3y}{3x+4y}$ is the right answer

Step-by-step explanation:

Given fraction is:

$\frac{\frac{x}{3}-\frac{y}{4}}{\frac{x}{4}+\frac{y}{3}}$

To solve the fraction, Taking LCM in denominator and numerator

$=\frac{\frac{4x-3y}{12} }{\frac{3x+4y}{12}}$

When the numerator and denominator both have fractions, the simplified form is obtained be multiplying the numerator with reciprocal of the denominator. So,

$= \frac{4x-3y}{12} * \frac{12}{3x+4y}\\=\frac{4x-3y}{3x+4y}$

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Option 2: $\frac{4x-3y}{3x+4y}$ is the right answer

Keywords: fractions, simplification

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3 years ago

Factor the expression over the complex numbers. x2+50

Karo-lina-s [1.5K]

X^2 + 50

√x^2+ √50

x + 5√2

5√2 = ~7.07106

x + 7.07106

x = -7.07106

hope this helps

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3 years ago