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Oliga [24]
2 years ago
14

HELP PLS ASAP

Mathematics
1 answer:
8090 [49]2 years ago
3 0

Answer:

D. x=(1/6)y^2

Step-by-step explanation:

D. x=(1/6)y^2

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The half-life of a radioactive kind of iodine is 60 days. How much will be left after 240 days, if you start with 480 grams of i
exis [7]

Answer:

30 grams

Step-by-step explanation:

half life is 60 days so every 60 days the amount 480 grams will be half

in 240 days will decay  240 /60 = 4 times

once 480 /2 = 240

twice 240 /2 = 120

trice 120 / 2 = 60

four times 60/2 = 30 grams will be left

6 0
2 years ago
What is the measure of each angle in any equilateral triangle?
miskamm [114]
60°; all of of the angles of a triangle add up to 180° so 180 divided by 3 equals 60°.
3 0
3 years ago
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coldgirl [10]

Answer:

- 9(8 - 2h)  \\ by \: distributive \: property \\  =  - 9 \times 8 - ( - 9) \times ( - 2h) \\  =    - 72 - 18h

3 0
2 years ago
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Please anyone help me answer this question am giving the brainliest
DochEvi [55]

Answer:

(-3/2x+1) + (3/x-1)

Step-by-step explanation:

Dont put the answer in parenthesis, I just did that to seprate it so it was easier to read. If you need it to be put in word form for it to be easier for you to understand, its "negative three divided by two x plus one, plus 3 divided by x minus 1"

First, rewrite the expression as 3x+6/2x^2+x-2x-1

Then, factor the expression, 3x+6/x*(2x+1)-(2x+1) (*=multiply)

Then, write a new fraction for each factor in the denominator, then write a new fraction, 3x+6/(2x+1)*(x-1) to (A)/2x+1 + B/x-1)

Then write terms in the numerators, for now we will use A and B.

Now we set the sum of the fractions equal to the original fraction.

3x+6/(2x+1)*(x-1) = A)/2x+1 + B/x-1).

Then reorder and group the terms, giving you 3x+6=(A+2B)x+(-A+B).

Now equate the coefficiants, {6= -A+B, 3= A+2B

Then substitute back, (A, B)=(-3, 3)

Now finally, just rewrite the fraction. (-3/2x+1) + (3/x-1)

Hope this helps! Sorry its kind of long.

6 0
2 years ago
1. Explain how you can use a strightedge and a compass to construct an angle that is both congruent and adjacent to a given angl
andrew11 [14]
1: if u use the same measures they will be congruent angles.
2: because the segment is being cut in half.
3: their has to be an intersection in the arcs<span />
5 0
3 years ago
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