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3 years ago

70 divided by -3.5. How do I show the long division?

Mathematics

2 answers:

Basile [38]3 years ago

8 0

$\frac{70}{-3.5}$

When using the long division,

<u>First step:</u>

Take the first digit in 70 which is 7

divide it by -3.5 (which is a single digit)

the answer is -2

<u>Second step:</u>

Take the second digit of 70 which is zero and divide it by -3.5.

Since it is impossible, You add a zero to the 2 up there and the answer is

-20.

KiRa [710]3 years ago

4 0

When dividing with negative and positive, the quotient is negative. 70 / -3.5 would be -2. Here is what the long division looks like:

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Elena-2011 [213]

C I believe the -2 part that was the one just looked it up on google XD hope it helped

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2 years ago

Create a number pattern that follows the rule

vazorg [7]

Answer:

The pattern form is 8,15,34,71 which follows the rule $x^3+7$

Step-by-step explanation:

Given : Rule $x^3+7$

To find : Create a number pattern that follows the rule. Use at least three terms in the pattern ?

Solution :

Rule $x^3+7$

Put n=1,

$x^3+7=(1)^3+7$

$x^3+7=1+7=8$

Put n=2,

$x^3+7=(2)^3+7$

$x^3+7=8+7=15$

Put n=3,

$x^3+7=(3)^3+7$

$x^3+7=27+7=34$

Put n=4,

$x^3+7=(4)^3+7$

$x^3+7=64+7=71$

The pattern form is 8,15,34,71 which follows the rule $x^3+7$

5 0

3 years ago

How do you solve cos(pi/24) using Half-Angle formulas, and leaving in simplified form?

adoni [48]

$\cos \frac{\theta}{2}=\sqrt{\frac{1+\cos \theta}{2}}
\\
\\ \cos{\frac{\pi}{24}}=\cos{\frac{\frac{\pi}{12}}{2}}=\sqrt{\frac{1+\cos \frac{\pi}{12}}{2}}= \sqrt{ \frac{1}{2}+ \frac{\cos \frac{\pi}{12}}{2} } 
\\
\\ \cos{\frac{\pi}{12}}=\cos{\frac{\frac{\pi}{6}}{2}}=\sqrt{\frac{1+\cos \frac{\pi}{6}}{2}}= \sqrt{ \frac{1}{2}+ \frac{ \frac{ \sqrt{3} }{2} }{2} } =\sqrt{ \frac{2}{4}+ \frac{ \sqrt{3} }{4} } = \sqrt{\frac{ 2+\sqrt{3} }{4} } = 
\\
\\ =\frac{ \sqrt{2+\sqrt{3}} }{2} 
$

$\cos{\frac{\pi}{24}}= \sqrt{ \frac{1}{2}+ \frac{\cos \frac{\pi}{12}}{2} } = \sqrt{ \frac{1}{2}+ \frac{\frac{ \sqrt{2+\sqrt{3}} }{2}}{2} } = \sqrt{ \frac{2}{4}+ \frac{ \sqrt{2+\sqrt{3}} }{4}} } =\sqrt{ \frac{ 2+\sqrt{2+\sqrt{3}} }{4}} } 
\\
\\\cos{\frac{\pi}{24}}=\frac{\sqrt{2+\sqrt{2+\sqrt{3}}}} {2}$

6 0

3 years ago

Look at the figure XYZ in the coordinate plane. Find the perimeter of the figure rounded to the nearest tenth.

ki77a [65]

the distance form X to Y is clearly -6 to 0 is 6 units, and 0 to 8 is 8 units, so 6 + 8 = 14 units.

now, for XZ and ZY we can simply use as stated, the distance formula to get those and then add them all to get the perimeter.

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ X(\stackrel{x_1}{-6}~,~\stackrel{y_1}{2})\qquad Z(\stackrel{x_2}{5}~,~\stackrel{y_2}{8})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ XZ=\sqrt{[5-(-6)]^2+[8-2]^2}\implies XZ=\sqrt{(5+6)^2+(8-2)^2} \\\\\\ XZ=\sqrt{121+36}\implies \boxed{XZ=\sqrt{157}} \\\\[-0.35em] ~\dotfill$

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ Z(\stackrel{x_2}{5}~,~\stackrel{y_2}{8})\qquad Y(\stackrel{x_2}{8}~,~\stackrel{y_2}{2})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ ZY=\sqrt{(8-5)^2+(2-8)^2}\implies ZY=\sqrt{9+36}\implies \boxed{ZY=\sqrt{45}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{perimeter}{14+\sqrt{157}+\sqrt{45}}\qquad \approx \qquad 33.2$

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3 years ago

Which measurement would you need to know in order to calculate an approximation of the area of Virginia?

seraphim [82]

Answer:

the length and width

Step-by-step explanation:

to find area, the eqaution is length times width

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3 years ago