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Maurinko [17]
3 years ago
15

Laurie was scuba diving. Each time she dove 5 feet deeper, she would stop and clear her ears. Each time that this totaled 20 fee

t deeper, she would stop and check her instruments to make sure they were working properly. After Laurie had checked her instruments 3 times, she was at her maximum depth. Which expression best represents Laurie’s maximum depth?
Mathematics
2 answers:
antoniya [11.8K]3 years ago
7 0

Answer:

The answer is A.

Step-by-step explanation:

(4)(-5)(3) best represents Laurie’s maximum depth.

Hopefully, this helps! :D

Ask me questions below!

zloy xaker [14]3 years ago
4 0

i would just answer somewhere near the bottom but since your not allowed to do that your answer is (4)(-5)(3)...leeme know if i helped...also..lemme know if i didnt help...

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The food service manager conducted a random survey of students to determine their preference for new lunch menu items. Which of
gogolik [260]

Answer:

<u>Inferences A, B and C are correct.</u>

Complete question, data and inferences:

Item                         Number of students

Pizza                                   6

Salad Bar                           27

Pita Sandwiches                13

Burritos                             24

The food service manager conducted a random survey of students to determine their preference for new lunch menu items. Which of these inferences can be drawn from the manager’s data? Select all that apply.  

A. About twice as many students prefer salad bar as compared to pita sandwiches.  

B. About three-fourths of students prefer either salad bar or burritos.

C. About half as many students prefer pita sandwiches as compared to burritos.

D. Burritos are the most preferred item.

E. Twice as many students prefer pizza as compared to pita sandwiches.

Source:

Question that can be found at quizizz dot com. We can't copy and paste the exact URL because brainly will block it.

Step-by-step explanation:

A. About twice as many students prefer salad bar as compared to pita sandwiches.   True. Two times 13 is 26 and the number of students that prefer Salad Bar is 27.

B. About three-fourths of students prefer either salad bar or burritos.  True. 51 students are the 73% (about three-fourths of the students surveyed) of the total students surveyed, 70.

C. About half as many students prefer pita sandwiches as compared to burritos. True. 13 is almost the half of 24.

D. Burritos are the most preferred item.  False. Salad Bar is the most preferred item.

E. Twice as many students prefer pizza as compared to pita sandwiches.  False. It's the opposite actually; twice as many students prefer pita sandwiches as compared to pizza.

4 0
3 years ago
PLS ANS THIS QUESTION PLS (WITH STEPS) IT WILL BE A GREAT HELP
VARVARA [1.3K]

Answer:

6x² – 10y² + 2xy + 10

Step-by-step explanation:

We'll begin calculating the sum of

x² + 3y² – 6xy and 2x² – y² + 8xy + 8

This can be obtained as follow:

... x² + 3y² – 6xy

+ 2x² – y² + 8xy + 8

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

3x² – 2y² + 2xy + 8

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

Next, we shall determine the sum of:

–3x² + 4y² + 3 and 4y² – 5

This can be obtained as follow:

–3x² + 4y² + 3

+ 4y² – 5

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

–3x² + 8y² – 2

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

Finally, we shall subtract the sum of:

–3x² + 4y² + 3 and 4y² – 5

from the sum of:

x² + 3y² – 6xy and 2x² – y² + 8xy + 8

This can be obtained as follow:

.. 3x² – 2y² + 2xy + 8

– (–3x² + 8y² – 2)

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

6x² – 10y² + 2xy + 10

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

5 0
3 years ago
The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is w
Masteriza [31]
Hi there

14000=-2000t+20000
Solve for t to find the age of the car
2000t=20000-14000
2000t=6000
T=6000/2000
T=3 years

Hope it helps
5 0
4 years ago
Read 2 more answers
Please help
nalin [4]

Answer:

12870ways

Step-by-step explanation:

Combination has to do with selection

Total members in a tennis club = 15

number of men = 8

number of women = 7

Number of team consisting of women will be expressed as 15C7

15C7 = 15!/(15-7)!7!

15C7 = 15!/8!7!

15C7 = 15*14*13*12*11*10*9*8!/8!7!

15C7 = 15*14*13*12*11*10*9/7 * 6 * 5 * 4 * 3 * 2

15C7  = 15*14*13*12*11/56

15C7 = 6,435 ways

Number of team consisting of men will be expressed as 15C8

15C8 = 15!/8!7!

15C8 = 15*14*13*12*11*10*9*8!/8!7!

15C8 = 15*14*13*12*11*10*9/7 * 6 * 5 * 4 * 3 * 2

15C8 = 6,435 ways

Adding both

Total ways = 6,435 ways + 6,435 ways

Total ways = 12870ways

Hence the required number of ways is 12870ways

4 0
3 years ago
The number A of tablet computers sold (in millions) can be modeled by the function A=4.5t2+43.5t+17 , where t represents the num
Rina8888 [55]
The problem indicates that A represents the number of tablet computers sold in millions. So, if 65 million were sold, we must substitute A = 65 to the equation. Then, we find for t.

65 = 4.5t² +43.5t + 17
Solving for t using a calculator,
t = 1 and -10.67

Let's take the positive root. So, t=1.
That means the year would be 1 year after 2010. <em>Therefore, the answer is 2011.</em>
6 0
3 years ago
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