Helen gathered 37 mushrooms in 3 hours. how many mushrooms did she gather if she gathered 7 more mushrooms in the second hour than the first hour and 6 more in the third hour than in the first hour?
pls help!

Answer:

The value is c = 21.1445.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The weight distribution of parcels sent in a certain manner is normal with mean value 12lb and standard deviation 3.5 lb.

This means that [tex]\mu = 12, \sigma = 3.5[/tex]

What value of c is such that 99% of all parcels are at least 1 lb under the surcharge weight?

This 1 added to the value of X for the 99th percentile, which is X when Z has a p-value of 0.99, so X when Z = 2.327.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]2.327 = \frac{X - 12}{3.5}[/tex]

[tex]X - 12 = 2.327*3.5[/tex]

[tex]X = 20.1445[/tex]

1 + 20.1445 = 21.1445

The value is c = 21.1445.

Answer:

1 / 7

Step-by-step explanation:

Given the distribution above :

P(grade B or higher) can be defined explicitly as :

P(Grade A) + P(Grade B)

P(grade A) = 2/35

P(Grade B) = 3 / 35

Hence,

P(Grade B or higher) = 2/35 + 3/35 = 5/35 = 1/7

Answer and explanation:

Answer:

Two sample t test

Explanation:

The test that could be used here is the two sample t test. The two sample t test compares two groups to ascertain if there is an average significant different between the two groups being compared, also making sure the result of difference is not random. For instance to test the above example, the two sample t test compares the group before they watch the commercial with the group after the commercial to know if there is a significant difference between the two groups.

Answer:

False

Step-by-step explanation:

You can have more than one line of symmetry to divide figures into more than two equal parts.

Answer:

t represents the total amount

0.25t = 10.00

Can you solve for t and answer?

Or logically

Peter's 10.00 is 1/4 (25%) of the total.

Therefore 4/4 is $40.00

Step-by-step explanation:

Please mark brainliest

Answer:

She will need 5 flats.

She will have 2 plants left over.

Step-by-step explanation:

Since she needs 28 flowers and there are 6 flowers in each plant.

To find the number of flats she needs simply divide 28 by 6

=28/6

=4.67

=Rounding off we get 5

Now we know that she need 5 flats so 5 flats will contain 5*6= 30 flowers total.

Since she has space for 28 flowers only the remainder will be;

30-28=2

Therefore she will have 2 plants leftover.

Answer:

When the number of rows or number of columns in the given matrix does not match the number of entries in the vector x.

When the number of columns in A [tex]\neq[/tex] the number of rows in B.

The matrix-vector is not defined.

Step-by-step explanation:

For example:-

Step 1:

Let's assume

[tex]A=\left ( \begin{matrix}-6 & 9\\ 2& 7\\ 1 & 0\end{matrix} \right )[/tex]3x2                 &       [tex]B=\left ( \begin{matrix}1\\ -6\\ 7\end{matrix} \right )[/tex]3x1

Since matrix multiplication of matric A and matrix B is only possible,

When the number of columns in A = Number of rows in B.

Step 2:

Let's A as m x n; Here m = rows and n=columns

B as p x q; Here p = rows and q=columns.

When n [tex]\neq[/tex] p, the matrix-vector is not defined.

That is matrix multiplication Ax is not possible.

Hence the matrix is not defined.

Answer:

4. SAME SLOPE, SAME Y INTERCEPT.

When this happens... The system of Equations has an Infinite Number of solutions.

A IS YOUR ANSWER

5.

A system of Equations has no solution when the graph of the system are PARALLEL LINES.

OPTION D IS YOUR ANSWER.

Answer:

[tex]Domain= \{x<2\ or\ x>2\}[/tex]

Step-by-step explanation:

Given

[tex]\frac{x - 5}{3x - 6}[/tex]

Required

The domain

Equate the denominator to 0

[tex]3x - 6 = 0[/tex]

Solve for x

[tex]3x = 6[/tex]

[tex]x = 2[/tex]

This means that the value of x cannot be 2 for the given function.

So, the domain is:

[tex]Domain= \{x<2\ or\ x>2\}[/tex]

Answer:

answer choices?

Step-by-step explanation:

Answer:

let x=the number

5x+30=15

5x=15-30

5x=-15

5x/5=-15/5

x=-3

Let's keep the,

Value of unknown number as y.

Then find the y,

→ 5y + 30 = 15

→ 5y = 15 - 30

→ 5y = -15

→ y = -15/5

→ [y = -3]

Therefore, -3 is the number.

Answer:

Step-by-step explanation:

Answer:

The sale tax is $10.42

Answer:

your answer is c

Step-by-step explanation:

Answer:

77 boxes

Step-by-step explanation:

1000/13= 76.9230769

They can't sell part of a box and a little extra money never hurt any one.

Answer:

77

Step-by-step explanation:

You already answered the question, but- 13 x 77 = 1001

Answer:

D

Step-by-step explanation:

Let w represent the width

Length=18+W

And width=w

So area of a Triangle equals (length times width)divided by two

Area=(18+w)(w)/2

And the area is given to us as 189

180=(18w+w^2)/2

Multiplying both sides by two yields

360=18w+w^2

The subtract 360 from both sides to get

w^2 +18w-360=0

Answer:

Step-by-step explanation:

A line that is parallel to the line that goes through (-3, -3) and (-1, 5) will have the same slope as the one we will find when we plug those numbers into the slope formula. Let's do that first:

[tex]m=\frac{5-(-3)}{-1-(-3)}=\frac{5+3}{-1+3}=\frac{8}{2}=4[/tex] so the line we need to write has a slope of 4. Moving on...

If the x-intercept we need is 4, that means that we need to understand what an x-intercept is. The x-intercept exists where y = 0; so what we need to do is to write the equation of the line that has a slope of 4 and passes through the point (4, 0). Doing that:

y - 0 = 4(x - 4) and

y = 4x - 16

Answer:

Answer above is correct!

First Box: 4

Second Box: -16

Step-by-step explanation:

Hope this helps :D

Answer:

area of the figure=1/2×(10+6)×3

=24 square feet

Answer:

[tex](0,0)[/tex]   [tex](4000,0)[/tex] and [tex](500,79)[/tex]

Step-by-step explanation:

Given

See attachment for complete question

Required

Determine the equilibrium solutions

We have:

[tex]\frac{dR}{dt} = 0.09R(1 - 0.00025R) - 0.001RW[/tex]

[tex]\frac{dW}{dt} = -0.02W + 0.00004RW[/tex]

To solve this, we first equate [tex]\frac{dR}{dt}[/tex] and [tex]\frac{dW}{dt}[/tex] to 0.

So, we have:

[tex]0.09R(1 - 0.00025R) - 0.001RW = 0[/tex]

[tex]-0.02W + 0.00004RW = 0[/tex]

Factor out R in [tex]0.09R(1 - 0.00025R) - 0.001RW = 0[/tex]

[tex]R(0.09(1 - 0.00025R) - 0.001W) = 0[/tex]

Split

[tex]R = 0[/tex]   or [tex]0.09(1 - 0.00025R) - 0.001W = 0[/tex]

[tex]R = 0[/tex]   or  [tex]0.09 - 2.25 * 10^{-5}R - 0.001W = 0[/tex]

Factor out W in [tex]-0.02W + 0.00004RW = 0[/tex]

[tex]W(-0.02 + 0.00004R) = 0[/tex]

Split

[tex]W = 0[/tex] or [tex]-0.02 + 0.00004R = 0[/tex]

Solve for R

[tex]-0.02 + 0.00004R = 0[/tex]

[tex]0.00004R = 0.02[/tex]

Make R the subject

[tex]R = \frac{0.02}{0.00004}[/tex]

[tex]R = 500[/tex]

When [tex]R = 500[/tex], we have:

[tex]0.09 - 2.25 * 10^{-5}R - 0.001W = 0[/tex]

[tex]0.09 -2.25 * 10^{-5} * 500 - 0.001W = 0[/tex]

[tex]0.09 -0.01125 - 0.001W = 0[/tex]

[tex]0.07875 - 0.001W = 0[/tex]

Collect like terms

[tex]- 0.001W = -0.07875[/tex]

Solve for W

[tex]W = \frac{-0.07875}{ - 0.001}[/tex]

[tex]W = 78.75[/tex]

[tex]W \approx 79[/tex]

[tex](R,W) \to (500,79)[/tex]

When [tex]W = 0[/tex], we have:

[tex]0.09 - 2.25 * 10^{-5}R - 0.001W = 0[/tex]

[tex]0.09 - 2.25 * 10^{-5}R - 0.001*0 = 0[/tex]

[tex]0.09 - 2.25 * 10^{-5}R = 0[/tex]

Collect like terms

[tex]- 2.25 * 10^{-5}R = -0.09[/tex]

Solve for R

[tex]R = \frac{-0.09}{- 2.25 * 10^{-5}}[/tex]

[tex]R = 4000[/tex]

So, we have:

[tex](R,W) \to (4000,0)[/tex]

When [tex]R =0[/tex], we have:

[tex]-0.02W + 0.00004RW = 0[/tex]

[tex]-0.02W + 0.00004W*0 = 0[/tex]

[tex]-0.02W + 0 = 0[/tex]

[tex]-0.02W = 0[/tex]

[tex]W=0[/tex]

So, we have:

[tex](R,W) \to (0,0)[/tex]

Hence, the points of equilibrium are:

[tex](0,0)[/tex]   [tex](4000,0)[/tex] and [tex](500,79)[/tex]

Answer:47.38

im not that sure

10

Step-by-step explanation:

[tex]\displaystyle \lim_{x \to 5} \left(\dfrac{x^2 - 5}{x - 5} \right)= \lim_{x \to 5} \dfrac{(x+5)(x-5)}{(x-5)}[/tex]

or

[tex]\displaystyle \lim_{x \to 5} (x + 5) = 10[/tex]

Answer:

3x+9 < 60 where x = Audrey's age

Step-by-step explanation:

Lou says "even if you tripled you age", which means that if Audrey's age is represented by the variable x, then we would multiply it by 3 to get 3x. the next part says "and add 9". We already have the 3x, so we would just tack on a +9 to get 3x + 9. The last part says "you still wouldn't be as old as me." Given that 3x+9 represents Audrey's age, this equation would have to be less than Lou's age, which in this case is 60.

Answer:

1/(e - 1)  

Step-by-step explanation:

ln (1 + x) = 1 + ln (x)

ln (1 + x) - ln (x) = 1

ln ((1 + x)/x) = 1

(1 + x)/x = e = 1 + 1/x

x = 1/(e - 1)

Answer:

C≈9.11

Step-by-step explanation:

Answer:

She would have to payed 36 dollars;

for the second part, i dont get it

Step-by-step explanation:

.75x40= 30

30+6 = 36

Answer:

Cost for 40 songs: $36

Cost for s songs: 0.75s + 6

Step-by-step explanation:

Set up an equation:

Variable s = number of songs

Variable x = number of months

0.75s + 6x

Solve for 40 songs in 1 month:

0.75(40) + 6(1)

30 + 6

$36

Solve for s songs:

0.75s + 6(1)

0.75s + 6