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2 years ago

Answer quick for brainliest

Mathematics

1 answer:

AVprozaik [17]2 years ago

6 0

Answer:

Step-by-step explanation:

y = mx + c

Here, m is the slope & c is the y-intercept

y = -3x - 1

Slope = -3

y intercept = -1

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four percent of newspaper readers wrote a letter to the editor last week. if there were 50 letters received by the editor last w

Alina [70]

Answer:

there are 1250 readers

Step-by-step explanation:

r = readers

4 percent of readers sent letter = 50 recieved letters

r * 4 percent = 50

r * .04 =50

divide by .04 on each side

r = 50/.04

r =1250

5 0

2 years ago

Read 2 more answers

A man deposits $ 14,850 into a bank, which pays 4% interest that is compounded

Ganezh [65]

Given:

Principal = $14850

Rate of interest = 4% compounded semiannually.

Time = 3 years

To find:

The amount after 3 years.

Solution:

Formula for amount is:

$A=P\left(1+\dfrac{r}{n}\right)^{nt}$

Where, P is principal, r is the rate of interest in decimal, n is the number of times interest compounded and t is the number of years.

The interest is compounded semiannually, so n=2.

Putting $P=14850, r=4, n=2, t=3$ in the above formula, we get

$A=14850\left(1+\dfrac{0.04}{2}\right)^{2(3)}$

$A=14850\left(1+0.02\right)^{6}$

$A=14850\left(1.02\right)^{6}$

On further simplification, we get

$A=14850(1.12616242)$

$A=16723.511937$

$A\approx 16723.51$

Therefore, the amount in the account after three years is $16723.51.

6 0

2 years ago

A study of the checkout lines at the Safeway Supermarket in the South Strand area revealed that between 4 and 7 P.M. on weekdays

Dima020 [189]

Answer:

Step-by-step explanation:

Given that a study of the checkout lines at the Safeway Supermarket in the South Strand area revealed that between 4 and 7 P.M. on weekdays there is an average of four customers waiting in line.

Let X be the number of customers waiting in line

X is Poisson with parameter = 4

the probability that you visit Safeway today during this period and find:

a. No customers are waiting

$P(X=0) = 0.018316$

b. Four customers are waiting?

$=P(x=4) =0.193567$

c. Four or fewer are waiting?

= $P(X\leq 4) = 0.628837$

d. Four or more are waiting

= $P(X\geq 4)=0.56653$

8 0

2 years ago

Need help regarding radioactive decay type of question

Alik [6]

By applying the radioactive simple decay model, we find that the initial quantity of the radioactive isotope is equal to approximately 5.63 grams.

<h3>How to determine the initial mass of a radioactive isotope</h3>

Mass of radioactive isotopes (m (t)), in grams, decay exponentially in time according to the following model:

$m(t) = m_{o}\cdot e^{-t/\tau}$ (1)

Where:

$m_{o}$ - Initial mass, in grams
t - Time, in years
τ - Time constant, in years

The time constant can be found in terms of half-life:

τ = t'/㏑ 2

If we know that t' = 24100 yr, t = 1000 yr and m(t) = 5.4 g, then the initial mass of the radioactive isotope is:

τ = 24100 yr/㏑ 2

τ ≈ 34768.95 yr

$5.4 = m_{o}\cdot e^{-1000/24100}$

$m_{o} = 5.629\,g$

By applying the radioactive simple decay model, we find that the initial quantity of the radioactive isotope is equal to approximately 5.63 grams.

To learn more on radioactive decay: brainly.com/question/1770619

#SPJ1

8 0

1 year ago

Given that the points (-5, 7), (5, 7), (5, 1), and (-5, 1) are vertices of a rectangle, how much shorter is the width than the l

nlexa [21]

(-5,7) and (-5,1) is the left side of the rectangle and the width is 7-1 =6
(5,7) and (5,1) is the right side of it. And length will be 5+5 = 10

And difference is 4.

7 0

3 years ago

Read 2 more answers