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olasank [31]
2 years ago
7

3.

Mathematics
1 answer:
artcher [175]2 years ago
7 0

Answer:

14 or 15

Step-by-step explanation:

14 squared is 196

15 squared is 225

I memorized these, my math tutor recommends to memorize the squares up to 20. :)

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Zoe is collecting books to donate. She started with 3 books and collects two more each week. She is using the equation b = 2w +
malfutka [58]

Answer:

Independent variable: b - books

Dependent variable: w - weeks

graph attached

Step-by-step explanation:

b = 2w + 3

b = total number of books collected

w = is the number of weeks

So, the number of books depend on the number of weeks, so

Independent variable: b - books

Dependent variable: w - weeks

7 0
3 years ago
If the height is 24, solve for x. h=-16x^2+8x+48
disa [49]

Answer:

x=  

32

7+  

3121

​  

 

​  

,  

32

7−  

3121

​  

 

​  

 

Step-by-step explanation:

h+16^2-8x-48=0

-7x+16x^2-48=0

x=  

32

7+  

3121

​  

 

​  

,  

32

7−  

3121

​  

 

​  

 

8 0
2 years ago
A standard die is rolled 360 times in hopes of rolling a 5 or 6. So the probability of success is p=1/3. Find the standard devia
lana [24]

Answer: option 1 is the correct answer

Step-by-step explanation:

Number of times for which the die was rolled is 360. It means that our sample size, n is 360.

The probability of rolling a 5 or a 6 is 1/3. It means that probability of success,p = 1/3. The probability of failure,q is

1 - probability of success. It becomes

1 - 1/3 = 2/3

The formula for standard deviation is expressed as

√npq. Therefore

Standard deviation = √360 × 1/3 × 2/3

= √80 = 8.9443

Standard deviation is approximately 8.9

4 0
3 years ago
4) A rectangular court is 4 feet wide. The length is twice as long as the width. What is the area of the rectangular court?
Advocard [28]

for rectangles:

A = lw

A = 4(4 * 2)

A = 4(8)

A = 32

So, your answer is B) 32 ft.

8 0
3 years ago
PLEASE HELP NOW!!!<br> QRST is a square. Use the properties of a square to find the value of x.
Annette [7]

Answer:

x = 6

Step-by-step explanation:

QRST is a square.

QR = RS (sides of a square are equal)

7x - 10 = 5x + 2

7x - 5x = 10 + 2

2x = 12

x = 12/2

x = 6

7 0
2 years ago
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