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3 years ago

Which of the following could be points on the unit circle?

Mathematics

1 answer:

Andrew [12]3 years ago

4 0

Answer:

see below

Step-by-step explanation:

For a point to be on the unit circle, the sum of the squares of the point's coordinates must be 1. Each value that is a fraction will have a square that is smaller than it is.

A: the given values add to 1; the sum of their squares cannot be 1.

B: a correct choice

C: one of the given values is more than 1, so the point cannot be on the unit circle

D: a correct choice

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1.2.8 -0.9+y<br> Your answer

Annette [7]

0.06+y simplify the expression

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3 years ago

Sophie has $200 in a savings account that earns 5% annually. The interest is not

r-ruslan [8.4K]

Answer:

$210

Step-by-step explanation:

Formula:

P = A (1 + r% x t)

P: Answer

A: Original value

R%: Percentage increase

T: Time

P = 200 (1 + 5% x 1)

P = $210

4 0

2 years ago

It costs 4 tokens to park in a garage for an hour. how many hours can you park with 30 tokens?

babunello [35]

Read the question carefully: it costs 4 tokens to park in a garage for an hour.

We will apply the unitary method to solve this question

It costs 4 tokens to park in a garage for 1 hour

Find how many hours can park in a garage for 1 token

If it costs 4 token to park in a garage for 1 hour

Then it will cost 1 token to park in a garage for 1/4 hour

Step2:

With 20 token we can park in a garage for (1/4) * 20

= 5 hours

So, we can park for 5 hours with 20 tokens.

Another method

If we take twenty tokens and divide them into groups of four, we will find that we are left with five groups of tokens. Each group of tokens represents an hour of parking time. This will give us five groups, or five hours, total.

So, we can park for 5 hours with 20 tokens

5 0

3 years ago

Read 2 more answers

I need to know the formula for this graph

Agata [3.3K]

Answer:

y=x+5

Step-by-step explanation:

6 0

2 years ago

the formula y-y1 =m(x-x1) is the pot slope form of the equation of a line where m is the slope of the line and(x,y) and (x1,y1)

oksano4ka [1.4K]

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~{{ 4}} &,&{{ -2}}~) 
% (c,d)
&&(~{{ 5}} &,&{{ 0}}~)
\end{array}
\\\\\\
% slope = m
slope = {{ m}}\implies 
\cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{5-(-2)}{0-4}\implies \cfrac{5+2}{0-4}\implies -\cfrac{7}{4}$

$\bf \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-(-2)=-\cfrac{7}{4}(x-4)
\\\\\\
y+2=-\cfrac{7}{4}(x-4)\implies y+2=-\cfrac{7}{4}x+7\implies y=-\cfrac{7}{4}x+9$

6 0

3 years ago