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OLga [1]
3 years ago
10

a quantity, t, varies inversely with a quantity, r. if t=6, then r=5 what is the constant of variation

Mathematics
1 answer:
Kamila [148]3 years ago
7 0

Answer:constant of variation = 6/5

Step-by-step explanation:

t varies inversely as r

Let k be the constant of variation

t = k/r

t = 6 and r = 5

Substitute the value of t and r

6 = k/5

Make k the subject of the formula

k = 6/5

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musickatia [10]

Answer:

He can buy 10 cds

Step-by-step explanation:

125-30=95

95 divided by 9 = 10.5555555556

5 0
3 years ago
How to solve this showing all work ! Also explain why they aren’t polynomials if you can :)
Lesechka [4]

Polynomials are linear combinations of positive integer powers. For example,

x^{100}+30x^2-\sqrt 2\,x+21

is a polynomial, but

-x^{-1}-4x^\pi+x^{3/2}

is not.

(In case you're unfamiliar with the term, a linear combination of two quantities is the sum of scaled versions of those quantities, e.g. a general linear combination of a and b is k_1a+k_2b, where k_1,k_2 are any numbers.)

8x^2-18\sqrt x+5x-3 is not a polynomial; the offending term is -18\sqrt x, or -18x^{1/2}.

7 0
3 years ago
Can someone help please!! i will give brainliest
olga_2 [115]

Answer:

1. $427.50

2. 50 hours

Step-by-step explanation:

1. First, find your salary at minimum hours, which is $360. Then, take your second equation, plug in 45, and solve using PEMDAS. This will give you $427.50

2. To solve this, you'll need to set it up like so:

495 = 13.5 (x - 40) + 360

Your next step will be to distribute the number outside the parentheses. This will give you:

495 = 13.5x - 540 + 360

Simplify, like so:

495 = 13.5x - 180

Solve.

495 = 13.5x - 180

+180             +180

This will give you:

675 = 13.5x

Divide each side.

675 = 13.5x

------    -------

13.5     13.5

  50 = x

7 0
3 years ago
A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount. If a jacket cos
Y_Kistochka [10]
200(1.4)(.75)=$210.00
3 0
3 years ago
Read 2 more answers
What is the measure of angle 1?<br> 20°<br> 42°<br> 138°<br> 160°
nikdorinn [45]

Step-by-step explanation:

line s || line t

r is the transversal,

Therefore,

(7x-2)°= (6x+18)° {exterior alternate angles}

7x-6x=18+2

x=20°

r is also a straight line,

therefore,

7x-2+angle1=180° (straight angle)

7x-2+ angle1=180°

7(20)-2+ angle 1= 180°

140°-2+ angle 1= 180°

angle 1= (180-140+2 )°= 42°

angle 1= 42°

8 0
3 years ago
Read 2 more answers
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