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Keith_Richards [23]
3 years ago
10

A college professor wants to survey a sample of students taking her large lecture course. There are about 150

Mathematics
1 answer:
Katen [24]3 years ago
3 0

Answer:

B

Step-by-step explanation:

B is the only answer that will ensure she gets graduate students in the sample without getting too few or too many.

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Write an expression in simplest form for the area of a rectangle with length 6c meters and width 2 meters.
zloy xaker [14]

Answer:

12c square meters

Step-by-step explanation:

We know that

Area of a rectangle = length (L)× width(w)

Here it is given that length ,and width of the rectangle is 6c meters and 2 meters respectively.

Therefore, required area of the rectangle = 6c × 2 = 12c square meters.

6 0
3 years ago
Find the slope and the y- intercept of the line
Rashid [163]
Standard form of a line is Y=mX+b

where m is slope

4x+2y=-6
2y=-4x-6
y=- 2x - 6

m= - 2 and y intercept is b=-6
4 0
3 years ago
Read 2 more answers
Rebecca wants to put 544 pennies in a coin collection book. the blue book fits 9 pennies per page. the red book fits 7 pennies p
natali 33 [55]
If she uses the blue book then she will need,

544/9 ≈ 61 pages

If she uses the red book the she will need, 

544/7 ≈ 78 pages

So she will need 17 more pages if she uses the red book.

Hope this helps :)
6 0
3 years ago
Pls help me<br>I m giving brainliest <br>​
navik [9.2K]

Step-by-step explanation:

the general line equation format is

y = ax + b

a is the slope or gradient of the line. it is the ratio of "y coordinate change / x coordinate change".

b is the y-intercept, the y value when x = 0. we get this by putting one point into the equation and solve for b.

(i)

A (3, 5)

B (5, 9)

x changes by +2 (from 3 to 5).

y changes by +4 (from 5 to 9).

so, the slope (or gradient) is +4/+2 = 2

(ii)

the semi-finished equation is

y = 2x + b

let's use A to get b :

5 = 2×3 + b = 6 + b

b = -1

and the full equation is

y = 2x - 1

(iii)

for point (4, k) we get

k = 2×4 - 1 = 8 - 1 = 7

3 0
2 years ago
Use the graph of f(x)=x^2 to find a number δ such that ∣x^2−1∣&lt;0.1 whenever 0&lt;|x−1|&lt;δ.
choli [55]

Answer:

\delta=0.0333

Step-by-step explanation:

|x^2-1}=|x-1||x+1|

|x|-|1|

|x|

|x+1|

Hence

|x-1|

|x-1|

Hopefully you get what I meant!!

8 0
3 years ago
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