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3 years ago

The ticket sales for a concert started at 4:00 P.M. The table shows the linear relationship

Mathematics

1 answer:

Vadim26 [7]3 years ago

4 0

Answer: J. for people in Ed or y = -3,000x + 15,000

Step-by-step explanation:

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2x + 2y = 2, 2(x + y) = 10}

Dima020 [189]

X will equal 5
y will equal 0

8 0

4 years ago

Write the equation of a line in point-slope form that is parallel to the line y = 3x +6 and passes through the point (-5, 8).

alexandr1967 [171]

Slope = 3
(-5, 8)

y - 8 = 3 (x + 5)
this is point slope form

y - 8 = 3x + 15
y = 3x + 23

4 0

3 years ago

Read 2 more answers

Find the area of the square.<br> 2/7m

sasho [114]

Answer:

Step-by-step explanation:

if you have one side =2/7

area = (2/7)^2=4/49 m^2

8 0

3 years ago

a rectangle has a perimeter of 68 inches.if the width of the rectangle is 10 inches,what is the length of the rectangle?

Dmitriy789 [7]

Answer:

l=24in

Step-by-step explanation:

P=2(l+w)

l=P

2﹣w=68

2﹣10=24in

3 0

3 years ago

Read 2 more answers

A sample of a radioactive isotope had an initial mass of 360 mg in the year 1998 and

RUDIKE [14]

Answer:

193 mg

Step-by-step explanation:

Exponential decay formula:

$A_t = A_0e^r^t$
where Aₜ = mass at time t, A₀ = mass at time 0, r = decay constant (rate), t = time

Our known variables are:

1998 to the year 2004 is a total of t = 6 years.
The sample of radioactive isotope has an initial mass of A₀ = 360 mg at time 0 and a mass of Aₜ = 270 mg at time t.

Let's solve for the decay constant of this sample.

$270=360e^-^r^(^6^)$
$270=360e^-^6^r$
$\frac{3}{4} =e^-^6^r$
$\text{ln} (\frac{3}{4} )= \text{ln}(e^-^6^r)$
$\text{ln} (\frac{3}{4} )=-6r$
$r=-\frac{\text{ln}\frac{3}{4} }{6}$
$r=0.04794701$

Using our new variables, we can now solve for Aₜ at t = 7 years, since we go from 2004 to 2011.

Our new initial mass is A₀ = 270 mg. We solved for the decay constant, r = 0.04794701.

$A_t=270e^-^(^0^.^0^4^7^9^4^8^0^1^)^(^7^)$
$A_t=270e^-^0^.^3^3^5^6^2^9^0^7$
$A_t=193.01982213$

The expected mass of the sample in the year 2011 would be 193 mg.

3 0

3 years ago