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2 years ago

What is the difference between 4/5- 1/2 *

Mathematics

2 answers:

Nitella [24]2 years ago

5 0

Answer:

3/10

Step-by-step explanation:

1. find the lowest common denominator which is 10.

2. for 4/5 you have to multiply 5 by 2 in order to get 10, so you multiply the numerator by 2 as well which gives you 8/10.

3. for 1/2 you have to multiply 2 by 5 in order to get 10, so you multiply the numerator by 5 also which gives you 5/10

4. you work out the difference between both numerators which is 3 and keep the denominator the same

alexira [117]2 years ago

4 0

Answer:

0.3

Step-by-step explanation:

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He was using an isosceles right triangle.

Both legs of an isosceles triangle are the same length, so knowing that when the shadow of the triangle was the same height as the triangle, then he knew that the shadow of an object would also be the same as it's height.

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2 years ago

-x - 4 = 4x - 54 im to lazy to figure it out myself

BlackZzzverrR [31]

Step-by-step explanation:

-x-4=4x-54

Adding x on both sides, we get

-x-4+x=4x-54+x
-4=5x-54

Adding 54 on both sides, we get

-4+54=5x-54+54
50=5x

Dividing both sides by 5, we get

50/5=5x/5
10=x

Hence, the value of x is 10.

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2 years ago

Why do systems of nonlinear equations sometimes have more than one solution

Nitella [24]

Answer:

System has equal number of unknowns and equations.

Manipulation easily yielded expressions for 4 of the 7 unknowns.

However it seems that the remaining 3 unknowns x,y,z are not fixed by the equations. Different combinations (x0,y0,z0) seem possible without violating the system equations.

Is this possible, or did I most probably make a mistake in counting degrees of freedom?

Step-by-step explanation:

3 0

1 year ago

The diameter of a circle is 20m Find the circumference to the nearest tenth

Mnenie [13.5K]

Answer:

C = 62.8 m

Step-by-step explanation:

The circumference formula is C = πd.

Here d = 20 m. Therefore, the circumference of this circle is C = (20 m)π.

To the nearest 10th, we round off C = (20 m)(3.14159) = C = 62.8 m

8 0

2 years ago

A hot air balloon went from an elevation of 4,064 feet to an elevation of 3,322 feet in 28 minutes. What

ELEN [110]

Answer:

The air balloon descends 26.5 feet per minute

Step-by-step explanation:

Rate of Change

The rate of change is a measure that compares two quantities, usually to know how one variable changes in time.

The hot air balloon was 4,064 feet high and, 28 minutes later, it went to 3,322 feet. We can calculate the rate of descent R by dividing the change of elevation over time:

$\displaystyle R=\frac{3,322-4,064}{28}=\frac{-742}{28}=-26.5$

Thus the air balloon descends 26.5 feet per minute

3 0

2 years ago