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crimeas [40]
2 years ago
13

A sample of a radioactive isotope had an initial mass of 730 mg in the year 2000 and

Mathematics
1 answer:
Mila [183]2 years ago
8 0

Answer:

102

Step-by-step explanation:

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What is the value of y
mixas84 [53]
840? Im not sure im sorry
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3 years ago
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PLEASE HELP ME ASAP 20 POINTS SHOW WORK
ZanzabumX [31]

Answer:

i got it wrong i don't want to give the wrong answer

question 4

smaller answer is -9

larger answer is 2

Step-by-step explanation:

i did the test

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2 years ago
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1.what is the slope of the line passing through the points (1,-5) and (4,1)?
hoa [83]

Answer:

C. 2

Step-by-step explanation:

Slope = (y2-y1) / (x2-x1) , (x1,y1) = (1,-5) , (x2,y2)=(4,1)

= (1-(-5)) / (4-1)

= (1+5) / 3

= 6/3

= 2

3 0
2 years ago
Very confused with this
OlgaM077 [116]

Answer:

∠ D = 28°

Step-by-step explanation:

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ EBC is an exterior angle of Δ ABE, thus

∠ EBC = 90° + 34° = 124°

BD bisects ∠ EBC, so

∠ EBD = 124° ÷ 2 = 62° , then

∠ D = 180° - (90 + 62)° = 180° - 152° = 28° ( angle sum of triangle )

4 0
2 years ago
Question:
Genrish500 [490]

Answer:

x=56 and the exterior angle is 116

Step-by-step explanation:

We will call the unknown angle in the triangle y.  Angle y and the angle (2x +4) form a straight line so they make 180 degrees.

y + 2x+4 =180

Solve for y by subtracting 2x+4 from each side.

y + 2x+4 - (2x+4) =180 - (2x+4)

y = 180-2x-4

y = 176-2x


The three angles of a triangle add to 180 degrees

x+ y+ 60 = 180

x+ (176-2x)+60 = 180

Combine like terms

-x +236=180

Subtract 236 from each side

-x+236-236 = 180-236

-x = -56

Multiply each side by -1

-1*-x = -56*-1

x=56

The exterior angle is 2x+4.  Substitute x=56 into the equation.

2(56)+4

112+4

116


8 0
3 years ago
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