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Tamiku [17]
3 years ago
12

Can someone please do these!!

Mathematics
2 answers:
Wewaii [24]3 years ago
7 0
For number 2. The answer is $6.49
marusya05 [52]3 years ago
5 0

Answer is attached below. Hope this helps.

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Carla has already written 10 pages of a novel. she plans to write 15 additional pages per month until she is finished. write and
grin007 [14]
Linear Equation: 15m+10=w
15 pages written for every month for 5 months plus the 10 pages she has already written is equal to the total number of pages written in 5 months.
m= number months written. In this case, it is 5 months.
w= number of pages written in 5 months
15(5)+10=w
75+10=w
85 pages written=w
Carla will have written 85 pages in 5 months.
4 0
3 years ago
A quadrilateral has three angles that measure 80°, 110°, and 75°. Which is the measure of the fourth angle? A. 50° B. 90° C. 95°
Free_Kalibri [48]

a quadrilateral has 4 angles that add up to 360 degrees

x + 80+110+ 75 = 360

combine like  terms

x + 265 = 360

subtract 265 from each side

x + 265 -265 =360 -265

x = 95

Choice C

5 0
3 years ago
Read 2 more answers
Suppose that X is a random variable with mean 30 and standard deviation 4. Also suppose that Y is a random variable with mean 50
Vladimir79 [104]

Answer:

a) Var[z] = 1600

    D[z] = 40

b) Var[z] = 2304

    D[z] = 48

c) Var[z] = 80

    D[z] = 8.94

d) Var[z] = 80

    D[z] = 8.94

e) Var[z] = 320

    D[z] = 17.88

Step-by-step explanation:

In general

V([x+y] = V[x] + V[y] +2Cov[xy]

how in this problem Cov[XY] = 0, then

V[x+y] = V[x] + V[y]

Also we must use this properti of the variance  

V[ax+b] = a^{2}V[x]

and remember that

standard desviation = \sqrt{Var[x]}

a) z = 35-10x

   Var[z] = 10^{2} Var[x] = 100*16 = 1600

   D[z] = \sqrt{1600} = 40

b) z = 12x -5

   Var[z] = 12^{2} Var[x] = 144*16 = 2304

   D[z] = \sqrt{2304} = 48

c) z = x + y

   Var[z] =  Var[x+y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94  

d) z = x - y

   Var[z] =  Var[x-y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94

e) z = -2x + 2y

   Var[z] = 4Var[x] + 4Var[y] = 4*16 + 4*64 = 320

  D[z] = \sqrt{320} = 17.88

   

7 0
3 years ago
What is the value of 4b ÷ 3, if b =3
Mice21 [21]
The value is 4 because 4b is also 4 times three which is twelve then you divide 12  by three and get 4

7 0
3 years ago
Point A (5, 6) is translated 3 units left and 5 units up, what are<br> the coordinates of A prime?
Radda [10]

Answer:

A' = (8, 11)

Explain:

5+3=8 & 6+5=11

3 0
3 years ago
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