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3 years ago

8

Is 10% of 10% of 100 the same as 20% of 100?

1 answer:

Lelu [443]3 years ago

5 0

No;

20% of 100 = 0.20 x 100 = 20
10% of 10% of 100 = 0.10 x 0.10 x 100 = 1

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180 is 25% of what number? show ur work

horsena [70]

Since 25% is 1/4, then 180 times 4 is 720.
720 is your answer.

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3 years ago

Find the equation of the line that is perpendicular to the given line and passes through the given point. Enter the right side o

disa [49]

$Let\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\l\ \perp\ k\iff m_1m_2=-1\\\\\text{We have}\ k:y=\dfrac{3x-12}{2}=\dfrac{3x}{2}-\dfrac{12}{2}=\dfrac{3}{2}x-6\to m_1=\dfrac{3}{2}\\\\l:y=mx+b\to\dfrac{3}{2}m=-1\qquad|\cdot\dfrac{2}{3}\\\\m=-\dfrac{2}{3}\\\\l:y=-\dfrac{2}{3}x+b\\\\\text{Put the coordinates of the point (9, 9) to the equation of the line}\ l:\\\\9=-\dfrac{2}{3}(9)+b\\\\9=-2(9)+b\\\\9=-18+b\qquad|+18\\\\b=27\\\\y=-\dfrac{2}{3}x+27\to y=-\dfrac{2x}{3}+\dfrac{27\cdot3}{3}\to\boxed{y=\dfrac{-2x+81}{3}}$

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3 years ago

Lee graphs the function y=2x2+1 y = 2 x 2 + 1 . Which statement explains whether the function is linear or not linear?

Sveta_85 [38]

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B

Step-by-step explanation:it in slope intercept form

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3 years ago

Mrs. Uhalley is planting her fall vegetable garden in the shape of a square. She needs to fence the perimeter of the garden to k

atroni [7]

Answer:

400 feet of fencing for her garden.

Step-by-step explanation:

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3 years ago

What is the 8th term of the geometric sequence a2 = 20 and r = 5

algol [13]

Answer:

8th term of geometric sequence is 312500

Step-by-step explanation:

Given : $a_2=20$ and common ratio (r) = 5

We have to find the 8th term of the geometric sequence whose $a_2=20$ and common ratio (r) = 5

Geometric sequence is a sequence of numbers in which next term is found by multiplying by a constant called the common ratio (r).

$a_n=ar^{n-1}$ ......(1)

where $a_n$ is nth term and a is first term.

For given sequence

a can be find using $a_2=20$ and r = 5

Substitute in (1) , we get,

$a_2=ar^{2-1}$

$\Rightarrow 20=a(5)$

$\Rightarrow a=4$

Thus, 8th term of the sequence denoted as $a_8$

Substitute n= 8 in (1) , we get,

$a_8=ar^{8-1} \\\\a_8=(4)r_{7} \\\\a_8=4(5)^7=4 \times 78125=312500$

Thus 8th term of geometric sequence is 312500

8 0

4 years ago