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3 years ago

Is the number 4.1234 rational

Mathematics

2 answers:

Rudiy273 years ago

8 0

Answer:

Yes

Step-by-step explanation:

A rational number is a number that can be represented a/b where a and b are integers and b is not equal to 0. Since 4.1234 is and integer or decimal above it is rational

SpyIntel [72]3 years ago

6 0

Yes, because it terminates and is able to be represented as a fraction

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Using the slope-intercept form, the slope is 4

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How might you solve a problem that has both a fraction and a decimal in it

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4 years ago

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3 years ago

Find the radius round your answer to the nearest tenth

Thepotemich [5.8K]

Answer:

r = 3m

Step-by-step explanation:

Formula for the volume of a sphere: V = $\frac{4}{3}$ $\pi$ $r^{3}$

We want to find the radius so we use algebra to rearrange the equation to make the radius (r) the subject of the equation

Divide both sides by $\frac{4}{3}$

$\frac{3V}{4}$ = $\pi$ $r^{3}$

Divide both sides by $\pi$

$\frac{3V}{4\pi }$ = $r^{3}$

Take the cube root of both sides

$\sqrt[3]{\frac{3V}{4\pi } }$ = r

Substitute V = 36 $\pi$ into the equation

r = $\sqrt[3]{\frac{3(36\pi) }{4\pi } }$

Expand the bracket

r = $\sqrt[3]{\frac{108\pi }{4\pi } }$

Divide 108 $\pi$ by 4 $\pi$ (For this, the two $\pi$ in the numerator and denominator cancel each other out, and you only need to divide 108/4)

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4 years ago

At the beginning of the bake sale, mary set aside 2 pies for herself. Karen then bought half of the remaining pies for her birth

Alexxx [7]

There were 60 pies before the bake sale started.

Explanation

Suppose, there were $x$ number of pies before the bake sale started.

As Mary set aside 2 pies for herself at the beginning of the bake sale, so the remaining number of pies $=x-2$

Karen then bought half of the remaining pies for her birthday party. That means, the remaining number of pies after Karen bought will be: $\frac{x-2}{2}$

10 more pies were sold during the sale and there were 19 pies remaining when the sale was over. So, the equation will be......

$\frac{x-2}{2}-10=19\\ \\ \frac{x-2}{2}=29\\ \\ x-2= 2*29=58\\ \\ x= 58+2=60$

So, there were 60 pies before the bake sale started.

8 0

4 years ago