I don’t even know if I’m doing the right thing or not I’m so confused

each day mrs hewes knits 1/3 of a scarf in the morning and 1/3 of a scarf in the afternoon. How many days will it take mrs. hewe

Inga [223]

3 days as she will have knitted 2/3 on the first day, 4/3 on the 2nd day and 6/3 on the 3rd day (2 scarves) Hope this helps!

5 0

3 years ago

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PLEASE HELP ALGABRA 1

wolverine [178]

Answer:

(1) F(n) = 8050 -400n

(2) 16 days

Step-by-step explanation:

Tylor first day he has left 7,250feet left to climb, this means that he has already climbed his 400ft on his first day

This will produce an arithmetic series for the distances left to climb as each day passes

initial climb = 7,250+400 = 7,650

Arithmetic Series

7650 , 7250 , 6850 , 6450 ......

a = 7650 , d = -400

(1) Explicit formula

F(n) = a + (n-1)d

= 7650 + (n-1)(-400)

= 7650 +400 -400n

F(n) = 8050 -400n

(2) 8050 -400n = 1750

6300 = 400n

n = 6300 /400 = 15.75 = 16 days( approximately)

So after 16days (approximately) Taylor will have 1750ft left to climb.

8 0

3 years ago

Given cosine of x is equal to negative square root of 3 over 2 comma what is the value of cos(x π)?

slamgirl [31]

Value of cos(x+π) = $\bold{\frac{\sqrt{3} }{2}}$

Given cosine of x = $-\frac{\sqrt{3} }{2}$

i.e., cos(x) = $-\frac{\sqrt{3} }{2}$

Also cos( $\frac{\pi}{6}$ ) = $\frac{\sqrt{3} }{2}$ . So x = $\frac{\pi}{6}$ .

We need to find cos(x+π) = cos( $\frac{7\pi}{6}$ ).

But its value is not easy to find. So we use trigonometric formulas.

We have the trigonometric formula, cos (x+π) = - cos(x) = - $-\frac{\sqrt{3} }{2}$ = $\bold{\frac{\sqrt{3} }{2}}$

Cos(x+π) lies in the 3rd quadrant. So there cosine has negative values. That is why, cos (x+π) = - cos(x).

Learn more about Cos(x+π) trigonometric formula at brainly.com/question/12243383

#SPJ4

7 0

2 years ago

A population has the following characteristics.(a) A total of 25% of the population survives the first year. Of that 25%, 75% su

zaharov [31]

Answer:

After 1st year, the age distribution will be

$x_1 = \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

After 2nd year, the age distribution will be

$x_2 = \left[\begin{array}{ccc}5256\\396\\27\end{array}\right]$

Step-by-step explanation:

A population has the following characteristics.

A total of 25% of the population survives the first year. Of that 25%, 75% survives the second year.

The average number of offspring for each member of the population is 3 the first year, 5 the second year, and 3 the third year.

From the above information, we can construct a transition age matrix.

$A = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right]$

The population now consists of 144 members in each of the three age classes.

From the above information, we can construct the current age matrix.

$x = \left[\begin{array}{ccc}144\\144\\144\end{array}\right]$

How many members will there be in each age class in 1 year?

After 1st year, the age distribution will be

$x_1 = A \cdot x$

$x_1 = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right] \times \left[\begin{array}{ccc}144\\144\\144\end{array}\right]$

The matrix multiplication is possible since the number of columns of first matrix is equal to the number of rows of second matrix.

$x_1 = \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

After 2nd year, the age distribution will be

$x_2 = A \cdot x_1$

$x_2 = \left[\begin{array}{ccc}3&5&3\\0.25&0&0\\0&0.75&0\end{array}\right] \times \left[\begin{array}{ccc}1584\\36\\108\end{array}\right]$

$x_2 = \left[\begin{array}{ccc}5256\\396\\27\end{array}\right]$

4 0

4 years ago

How do I find this answer (all three of them)?

Korvikt [17]

1. 50 degrees
2. 130 degrees
3. 50 degrees

4 0

3 years ago

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