Eight times the difference of y and nine

Answers

Answer 1
Answer:

Eight times the difference of y and nine will be 8(y - 9).

It should be noted that eight times the difference of y and nine simply means that one has to subtract 9 from y and then multiply the difference by 8.

Therefore, eight times the difference of y and nine will be 8(y - 9).

In conclusion, the correct option is 8(y - 9).

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Answer 2
Answer:

Answer:

(y-9)8

Step-by-step explanation:

you first solve 8-9, and then multiply is by 8.


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Karen earns $54.60 for working 6 hours. If the amount she earns varies directly with thenumber of hours she works, how many hours would she need to work to earn an
additional $260?

Answers

Given:

Karen earns $54.60 for working 6 hours.

Amount she earns varies directly with the  number of hours she works.

She need to work to earn an  additional $260.

To find:

Number of hours she need to work to earn an  additional $260.

Solution:

Let the amount of earnings be A and number of hours be t.

According to question,

A\propto t

A=kt     ...(i)

where, k is constant of proportionality.

Karen earns $54.60 for working 6 hours.

54.60=k(6)

Divide both sides by 6.

(54.60)/(6)=k

9.1=k

Put k=9.1 in (i).

A=9.1t

Substitute A=260 in the above equation.

260=9.1t

Divide both sides by 9.1.

(260)/(9.1)=t

28.5714=t

t\approx 29

Therefore, she need to work extra about 29 hours to earn an  additional $260.

Sin2x/1+cos2x=tanx
How do I prove this with the double angle law

Answers

sin(2x) = 2 sin x cos x \n \n cos(2x) = cos^2 x - sin^2 x
After Substituting:
(2 sin x cos x)/(1+cos^2 x - sin^2 x)
Use pythagorean thm:
1 - sin^2 x = cos^2 x
......................
(2 sin x cos x)/(2cos^2 x) \n \n = (sinx )/(cos x) \n \n = tan x

Renting a car costs $30 per day, or $600 per month. Renting daily is cheaper for a few days, but after how many days are the two options equal (after which renting monthly is cheaper)?

Answers

Answer:

after 20 days it will be equal

Step-by-step explanation:

i dont have step by step but the problome is 30x20=600

A circle has a center (2, 4). prove that if the radius of the circle is less than 5, then the circle does not intersect the line y=x-6.

Answers

Draw a coordinate system, Draw a circle with radius 5 with center part (2,4). Now draw a line of y=x-6 with -6 being the y intercept and see what you get

-2a+5b-7-5a+b-4

please help lol

Answers

Answer:

-7a+6b-11

Step-by-step explanation:

-2a+5b-7-5a+b-4

Taking like term together

= -2a-5a+5b+b-7-4

= -7a+6b+11

Ashley Traveled 10 miles north, then 8 miles east, then 9 miles south on her boat

Answers

what’s the rest of the question...?