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horsena [70]
3 years ago
10

U Dividingem. Show your work.0.7÷28.7​

Mathematics
1 answer:
grin007 [14]3 years ago
4 0

Answer:

the answer is 41 just see how many time 0.7 go's into 28.7

Step-by-step explanation:

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A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table. Time (s
luda_lava [24]

Answer:

f(x) = 30 • 0.989x

Step-by-step explanation:

Given the data :

10 26.8

20 23.9

30 21.3

40 19

50 16.9

60 15.1

Using technology, the exponential model equation obtained by plotting the data is :

y = 30.068(0.989)^x

Based on the general exponential formula :

y = ab^x

y = predicted value

Initial value, a = 30.068

Rate = b = 0.989

The most appropriate model equation from the options given is :

f(x) = 30 • 0.989^x

7 0
3 years ago
Rewrite the given parametric equations in Cartesian from x(t) = 2t– 1 y(t) = 5t
docker41 [41]

Hi there!

\large\boxed{(-\frac{5}{3},-\frac{5}{3})}

We can begin by setting the two expressions equal to solve for t:

2t - 1 = 5t

Subtract 2t from both sides:

-1 = 3t

Divide both sides by 3:

t = -1/3

Plug in this value of t into x(t) and y(t):

x(-1/3) = 2(-1/3) - 1 = -2/3 - 1 = -5/3

y(-1/3) = 5(-1/3) = -5/3

Thus:

(-5/3, -5/3) are the corresponding coordinates.

7 0
3 years ago
Find the quotient of 9/18 divided 3/6
skad [1K]
Your answer is 14/5. hope that helps :)
5 0
4 years ago
Question #1 What is the sum?​
sweet-ann [11.9K]

Answer:

\frac{7}{a + 8}+\frac{7}{a^2-64} = \frac{14}{a^2+a-56}

Step-by-step explanation:

Sum means finding the total of something. We can do this by using addition.

\frac{7}{a + 8}+\frac{7}{a^2-64}

In this problem, we will add the numerators and the denominators.

\frac{(7+7)}{(a+8)+(a^2-64)}

\frac{14}{a^2+a-56}

So, your answer is letter choice B.

5 0
3 years ago
Write an equation in slope intercept form that passes through the point (0,1) and is perpendicular to the line described by y=(1
pickupchik [31]
Perpendicular means the slope has to be the negative reciprocal of the slope of the line it is perpendicular to. (0,1) is a y-intercept so you just have to take the slope. Make it a negative reciprocal and plug in the y-intercept in the equation.

y = -8x + 1
4 0
4 years ago
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