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3 years ago

If the measure of an angle 38 , find the measure of its complement

1 answer:

5 0

If you’re finding the measure of its complement, the sum of both angles will always be 90*

x+38 = 90
-38 | -38

x = 52

the measure of its complement is 52*

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Write a verbal problem that involves subtracting 4 liters.

Alona [7]

A kiddy pool going over it’s limit so you have to subtract 4 liters to get to the safe level bar.

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3 years ago

What are the exact solutions of x2 − 5x − 7 = 0, where x equals negative b plus or minus the square root of b squared minus 4 ti

Marat540 [252]

Answer:

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

Step-by-step explanation:

Given

$x^2 - 5x - 7 = 0$

Required

Solve for x using:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

First, we need to identify a, b and c

The general form of a quadratic equation is:

$ax^2 + bx + c = 0$

So, by comparison with $x^2 - 5x - 7 = 0$

$a = 1$ $b = -5$ $c = -7$

Substitute these values of a, b and c in

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$x = \frac{-(-5) \± \sqrt{(-5)^2 - 4 * 1 * -7}}{2 * 1}$

$x = \frac{5 \± \sqrt{25 +28}}{2}$

$x = \frac{5 \± \sqrt{53}}{2}$

Split the expression to two

$x = \frac{5 + \sqrt{53}}{2}$ or $x = \frac{5 - \sqrt{53}}{2}$

To solve further in decimal form, we have

$x = \frac{5 + 7.28}{2}$ or $x = \frac{5 - 7.28}{2}$

$x = \frac{12.28}{2}$ or $x = \frac{-2.28}{2}$

$x = 6.14$ or $x = -1.14$

4 0

3 years ago

Given that 1 in. = 2.54 cm exactly, indicate what conversion factor is appropriate to convert 12.4 in. to centimeters.

Dahasolnce [82]

You are given that 1 inch = 2.54 centimeters, so to convert 12.4 inches to centimeters, you would multiply 12.4 in by 2.54 cm.

4 0

3 years ago

Convert 385 pounds into kg given the fact that 1 kg = 2.2 pounds.

AlladinOne [14]

Answer:

175 Kg

Step-by-step explanation:

Convert 385 pounds into kg given the fact that 1 kg = 2.2 pounds.

385 : 2.2 =

175 Kg

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2 years ago

How many answers are in each of these three questions: 1. x squared minus three x plus four equals zero 2. Two x squared plus fo

vaieri [72.5K]

1. No solutions ( no answers) 2 . 2 answers 3. 1 answer

6 0

3 years ago