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3 years ago

What is the step by step answer of 3 + 1 1/4=

Mathematics

2 answers:

ivann1987 [24]3 years ago

6 0

Ok so first u would add 3+1 which gives u 4 and then add 1/4 which should give u 4 1/4

nydimaria [60]3 years ago

5 0

First, let's make 1 1/4 into a improper fraction. So 1 whole is 4/4 and then add the 1/4. So 4/4+1/4 is 5/4. Now let's make 3 into the same common denominator. So 3=3/1. Now let's use the identity property to multiply it by 4, since we want the common denominator to be 4. 3/1 x 4/4 is 12/4. Now we can finally add. When we add, we only add the numerators. So 12/4+5/4 is 17/4. The fraction symbol is another way saying division. So 17 divided by 4 is 4 r 1. We make the remainder into a fraction and use 4 as a whole number. So our answer is 4 1/4.

Real answer: 4 1/4

Hope I helped.

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Add the following complex numbers: (5-3i)+(10+5i)

serious [3.7K]

Answer:

i = 7.5

Step-by-step explanation:

(5-3i)+(10+5i)

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3 years ago

In a group of 58 learners at Nakambuda C.S, 34 learners have chosen the field of Agriculture. What fraction of learners will be

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semplify it

divide by 2

34 > 17

58 > 29

they are prime numbers, so can't be semplify anymore

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4 0

2 years ago

Calculating cos-1 ( help is gladly appreciated :) )

Alekssandra [29.7K]

Answer:

$\frac{3\pi}{4}$

(Assuming you want your answer in radians)

If you want the answer in degrees just multiply your answer in radians by $\frac{180^\circ}{\pi}$ giving you:

$\frac{3\pi}{4} \cdot \frac{180^\circ}{\pi}=\frac{3(180)}{4}=135^{\circ}$ .

We can do this since $\pi \text{ rad }=180^\circ$ (half the circumference of the unit circle is equivalent to 180 degree rotation).

Step-by-step explanation:

$\cos^{-1}(x)$ is going to output an angle measurement in $[0,\pi]$ .

So we are looking to solve the following equation in that interval:

$\cos(x)=-\frac{\sqrt{2}}{2}$ .

This happens in the second quadrant on the given interval.

The solution to the equation is $\frac{3\pi}{4}$ .

So we are saying that $\cos(\frac{3\pi}{4})=\frac{-\sqrt{2}}{2}$ implies $\cos^{-1}(\frac{-\sqrt{2}}{2})=\frac{3\pi}{4}$ since $\frac{3\pi}{4} \in [0,\pi]$ .

Answer is $\frac{3\pi}{4}$ .

4 0

2 years ago