How do I add mixed numbers?

1 answer:

ivann1987 [24]3 years ago

3 0

Step 1 - find the lowest common multiple between the denominators step 2 - multiply the numerator and denominator of each fraction step 3 - Add or subtract the numerators and keep the denominator the same.

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A Blimp is 400 feet in the air. There is an angle of depression of 40 degrees to a football stadium. How far is the Blimp from t

VMariaS [17]

Answer:

Step-by-step explanation:

The diagram of the stadium and the blimp is shown in the attached photo. A right angle triangle, ABC is formed. Angle A is alternate to the angle of depression. This mean that they are equal. So angle A =40 degrees.

The distance of the the Blimp from the stadium is x feet which is the hypotenuse of the triangle.

Applying trigonometric ratio,

Sin 40 = 400/x

xsin40 = 400

x = 400/sin40 = 400 / 0.6428

x = 622.3 feet

5 0

3 years ago

What must you do to the first inequality to get to the second inequality? A. N 4 <5;n<20 b. − n 4 <5;n>−20 A. A. Add

adell [148]

A. You have two inequalities:

$\dfrac{n}{4}$
$n$

If you multiply the first inequality by positive number 4 (multiplying inequality by positive number doesn't change the inequality sign), then you get the inequality

$4\cdot \dfrac{n}{4}$

B. You have two inequalities:

$-\dfrac{n}{4}$
$n>-20.$

If you multiply the first inequality by negative number -4 (multiplying inequality by negative number changes the inequality sign), then you get the inequality

$-4\cdot \left(-\dfrac{n}{4}\right)>-4\cdot 5,\\ \\n>-20.$