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3 years ago

Jynessa wants to order these fractions 4/9, 2/3, 1/6, -2 1/2 what should she use as her common denominator?

Mathematics

1 answer:

noname [10]3 years ago

5 0

Answer: 18 is a common denominator

Step-by-step explanation: because 9x2=18, 3x6=18, 6x3=18, and 9x2=18

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What is an equation of the line that passes through the points (-2,-5) and (-1,1)

alekssr [168]

Answer:

Slope = 6

Step-by-step explanation:

Slope = $\frac{y^{2}-y^{1} }{x^{2}-x^{1} } =\frac{1-(-5)}{-1-(-2)}=\frac{1+5}{-1+2}=\frac{6}{1}=6$

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2 years ago

Which of the following lists of ordered pairs is a function

devlian [24]

Answer:

d)(0,3), (-1,4), (1,6), (-1,7)

Step-by-step explanation:

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3 years ago

Read 2 more answers

X +9 < 9 and x +7 > 5<br> But the less than signs are less than or equal to.

Vera_Pavlovna [14]

Answer:

x<0 less than or equal to and x > -2

Step-by-step explanation:

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3 years ago

Find the exact value of the given expression.<br> sin(2cos^-1(5/13))

xeze [42]

Answer:

+120/169 or -120/169

Step-by-step explanation:

let $cos^{-1}[\frac{5}{13} ] = \alpha$

where, alpha is some angle that satisfies the assumed condition.

so, $cos\alpha= 5/13$

[ taking cos to the other side or applying cos on both sides]

now, substitute this in the given expression

$sin(2cos^-1(5/13)) = sin(2\alpha )$

as sin $\beta$ = $+ or -\sqrt{1-(cos\beta) ^{2}$

[by general trigonometry formula: $cos^{2}[\beta] +sin^{2}[\beta]=1$ ]

so if $cos\alpha= 5/13$ , we can get sin $\alpha$ from the above formula as + or - 12/13

(because, after taking square root on both sides we keep + or -]

as, sin $2\beta = 2*sin[\beta ]*cos[\beta ]$

[by general trigonometry formula]

here, now $sin[2\alpha ]=2*(+or- 12/13)*5/13\\$

so, the final value can be 120/169 or -120/169.

4 0

3 years ago

Use the Distributive Property to simplify the following expression: [7 + (−2)]⋅(−3)

Andrei [34K]

D. 12 hope this help

3 0

3 years ago