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2 years ago

11

A plane has 360 total seats, which are divided into economy class and business class. For every 13 seats in economy class, there

are 5 seats in business class.

2 answers:

TEA [102]2 years ago

8 0

Do as follows:

13 +5 =18

360/18=20

13*20 = 260

5*20 =100

260 economy & 100 business

Bas_tet [7]2 years ago

3 0

13 +5 =18

360/18=20

13*20 = 260

5*20 =100

260 economy & 100 business

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Rebecca bought 1.5 pounds of grapes and paid $3.72. what was the cost per pound of grapes?

yuradex [85]

Multiply 15X372 = 5580

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2 years ago

What is the sum of the first 37 terms of the arithmetic sequence?

lidiya [134]

Answer:

The sum of the first 37 terms of the arithmetic sequence is 2997.

Step-by-step explanation:

Arithmetic sequence concepts:

The general rule of an arithmetic sequence is the following:

$a_{n+1} = a_{n} + d$

In which d is the common diference between each term.

We can expand the general equation to find the nth term from the first, by the following equation:

$a_{n} = a_{1} + (n-1)*d$

The sum of the first n terms of an arithmetic sequence is given by:

$S_{n} = \frac{n(a_{1} + a_{n})}{2}$

In this question:

$a_{1} = -27, d = -21 - (-27) = -15 - (-21) = ... = 6$

We want the sum of the first 37 terms, so we have to find $a_{37}$

$a_{n} = a_{1} + (n-1)*d$

$a_{37} = a_{1} + (36)*d$

$a_{37} = -27 + 36*6$

$a_{37} = 189$

Then

$S_{37} = \frac{37(-27 + 189)}{2} = 2997$

The sum of the first 37 terms of the arithmetic sequence is 2997.

6 0

2 years ago

cricket20 [7]

Answer:

the answer is 3x2-10x+6=0

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2 years ago

What is Factor 64b-16c to identify the equivalent expressions.

liubo4ka [24]

Answer:
16(4b - c)

Explanation:
16 x 4b = 64b
16 x c = 16c

3 0

2 years ago

You are about to take the road test for your driver's license. You hear that only 38% of candidates pass the test the first t

OLga [1]

Answer:

Answers may vary but will most likely be close to 2.

Step-by-step explanation

Given:

first test:38%

second test:76%

SIMULATION FIRST TEST

Randomly select a 2-digit number.

If the digit is between 00 and 35 then you passed the test,else you did not pass the test.

SIMULATION SECOND TEST

Randomly select a 2-digit number.

if the digit is between 00 and 75 then you passed the test,else you did not pass the test.

SIMULATION TRIAL

Perform the simulation of the first test.if you did not pass the first test then perform the simulation of the second test.

Record the number of trials needed to pass the first or second test.

Repeat 20 times and take the average of the 20 recorded number of trials

(what is the sum of recorded values divided by 20).

Note:you will most likely obtain a result of about two trials needed.

7 0

2 years ago