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2 years ago

Before dividing, decompose 420 to make it easier to divide by 4.

Mathematics

1 answer:

den301095 [7]2 years ago

3 0

Answer:

4/420=105

Step-by-step explanation:

decompose 42 and divide by 4 is 10 and is 20 divided by 4 is 5

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What's 3 + 3 ? NEED HELP RIGHT NOW!!! URGENT!!! PLEASE HELP!!!

yarga [219]

Answer:

Step-by-step explanation:

3 + 3 = 6

3 0

3 years ago

Read 2 more answers

The letters r and Θ represent polar coordinates. perform the following.

nexus9112 [7]

Answer:

$\boxed{(x - \frac{1 }{ 2})^{2} + y^{2} = \frac{21 }{ 4}}\\$

Step-by-step explanation:

$r = \frac{5}{r - cos\theta}\\r^{2} - rcos\theta = 5\\\\$

$\text{Use the relationships}\\r^{2} = x^{2} + y^{2}; cos\theta = \frac{ x}{r }\\$

$\begin{array}{ll}x^{2} + y^{2} - r(\frac{x }{r }) = 5 & \text{Made the substitutions } \\x^{2} + y^{2} - x = 5 & \text{Simplified } \\x^{2} -x + y^{2} = 5 & \text{Rearranged } \\x^{2} -x + \frac{1 }{ 4} + y^{2}= 5 + \frac{1 }{ 4} & \text{Completed the square } \\(x - \frac{1 }{ 2})^{2} + y^{2}= \frac{21 }{ 4} & \text{Wrote as sum of squares} \\\end{array}\\\\$

$\text{This is the equation of a circle with centre at (0.5, 0 ) and radius equal to}\\\frac{\sqrt{21} }{ 2} \approx 2.291\\$

$\boxed{(x - \frac{1 }{ 2})^{2} + y^{2}= \frac{21 }{ 4}}\\$

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2 years ago

Complete the statements about the key features of the graph of f(x) = x5 – 9x3. As x goes to negative infinity, f(x) goes to inf

AlladinOne [14]

Subsitute to find out
actually, since it is odd degree and positive leading coefient, it goes from bottom left to top right

so as x goes to negative infinty, f(x) goes to negative inifnty
as x goes to positive inifnty, f(x) goes to positive inifnty

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2 years ago

Read 2 more answers

The common denominator of 3/4 and 1/6 is 24. True False

Viktor [21]

Actually, this is false. 6 and 4 both have <em>12 </em>in common because 6*2=12 and 4*3 is 12. So the least common denominator is really 12.

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3 years ago

Adrian purchases a book for $4.86 and a poster for $3.44. If she gives the cashier

Svetradugi [14.3K]

Answer:

$6.70

Step-by-step explanation:

Adrian purchases a book for 4.86 and a poster for 3.44

The total amount he owes would be 4.86 + 3.44 = $8.30

If she gives the cashier 15 dollars she should receive 15 - 8.30 = $6.70 back.

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2 years ago