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fgiga [73]
3 years ago
9

2 over 8 divided by 1 over 2 =

Mathematics
1 answer:
Illusion [34]3 years ago
7 0
Answer: 1 over 2 (1/2)

Simplify 2 over 8 to get 1 over 4. Now you have 1 over 4 divided by 1 over 2. Whenever you divide with fractions you flip the fraction and multiply . So it becomes 1 over 4 multiplied by 2 over 1.

2/8 (divided by) 1/2
1/4 (divided by) 1/2
1/4 x 2/1
= 1/2
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Please, please please help!!! my assignment is due today and i need help.
OlgaM077 [116]
Can you post a picture so its better to understand
6 0
2 years ago
13. Solve to find the vertex if :<br> 3x2 – 19x - 5
TEA [102]

Answer:

 A) y = 3(x -3)^2 -46

 B) (3, -46)

 C) look at the y-coordinate of the vertex

Step-by-step explanation:

A) Factor the leading coefficient from the variable terms.

 y = 3(x^2 -6x) -19

Inside parentheses, add the square of half the x-coefficient. Outside, subtract the same value.

 y = 3(x^2 -6x +9) -19 -3(9)

 y = 3(x -3)^2 -46

__

B) Compared to the vertex form, ...

 y = a(x -h)^2 +k

we find a=3, (h, k) = (3, -46).

The vertex is (3, -46).

__

C) The vertex is an extreme value (as is any vertex). The sign of the leading coefficient tells you whether the parabola opens upward (+) or downward (-). This parabola opens upward, so the vertex is a minimum.

If the leading coefficient is positive, the y-coordinate of the vertex is a minimum. If the leading coefficient is negative, the y-coordinate of the vertex is a maximum.

Step-by-step explanation:

5 0
2 years ago
Fo quality control purposes, we collect a sample of 300 items and find 36 defective items in it. Construct a 90% confidence inte
MrMuchimi

Answer:

(0.089 ; 0.151)

Step-by-step explanation:

Given :

Sample size, n = 300

Number of defective items, x = 36

The confidence interval required here is that for a one sample proportion :

The confidence interval is defined thus :

Phat ± Zcritical * √[Phat(1 - phat) / n]

Zcritical at 90% = 1.645

Phat = x / n = 36 / 300 = 0.12

Hence,

C.I = 0.12 ± 1.645 * √[0.12(1 - 0.12) / 300]

C.I = 0.12 ± (1.645 * 0.0187616)

C.I = 0.12 ± 0.0308629

C.I = (0.089 ; 0.151)

7 0
3 years ago
At a certain time of day, the angle of elevation of the sun is 40°. To the nearest foot,find the height of a tree whose shadow i
konstantin123 [22]
We need to find a tree such that the angle of elevation from the end of the shadow to top of the tree is 40 degrees.

The length of the shadow is the adjacent side and  is 35.
The height of the tree is the opposite side.  Let it be x.

Tan ratio = opposite/adjacent

tan(40) =  x/35
x = 35*tan(40) = 29.37

Answer: Height of the tree is 29 feet
4 0
3 years ago
Pls answer need help
uranmaximum [27]

Answer:

7m

Step-by-step explanation:

7m is monomial

Hope it helps you in your learning process

4 0
3 years ago
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