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3 years ago

Which of the following describes exponential decay?

Mathematics

1 answer:

gladu [14]3 years ago

5 0

So it should be A bit look it up just in case

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At the city museum, child admission is $5.40 and adult admission is $9.10. On Monday, three times as many adult tickets as child

denis23 [38]

Answer: 33 child tickets that were sold.

Step-by-step explanation:

Let x represent the number of child tickets that were sold.

Let y represent the number of adult tickets that were sold.

At the city museum, child admission is $5.40 and adult admission is $9.10. A total sales of $1079.10 was made on Monday. This means that

5.4x + 9.1y = 1079.1 - - - - - - - - - -1

On Monday, three times as many adult tickets as child tickets were sold. This means that

y = 3x

Substituting y = 3x into equation 1, it becomes

5.4x + 9.1 × 3x = 1079.1

5.4x + 27.3x = 1079.1

32.7x = 1079.1

x = 1079.1/32.7

x = 33

y = 3x = 3 × 33

y = 99

3 0

3 years ago

Find the product of 2/3 × 4/7<br>

kirill [66]

Answer:

8/21

Step-by-step explanation:

2x4 = 8

3x7 = 21

8/21 cannot be simplified

3 0

2 years ago

Read 2 more answers

A car traveled 187 miles in 4 hours and 16 minutes. What was the average speed of the car in miles per

Bas_tet [7]

Answer:

43.83mph

step-by-step-explanation

4 0

3 years ago

Given the following equation x2 + 4x = 21 find the solutions. (Show All Work)

NeTakaya

Step-by-step explanation:

15a)

$x^2+4x=21$ Subtract both sides by 21

$x^2+4x-21 =0$

15b)

7 and -3 multiply to -21 and add to 4

The factors are (x+7)(x-3)

15c)

x+7 =0

x=-7

x-3=0

x=3

7 0

3 years ago

Students took two parts of a test, each worth 50 points. Part A has a variance of 25, and Part B has a variance of 36. The corre

Leona [35]

Answer:

Following are the solution to the given choices:

Step-by-step explanation:

In point a:

Calculating the variance of the test grade:

$\to var(A+B)=var A + var B + 2 cov(A,B)$

$=25+36+2(0.8)\\\\=25+36+1.6\\\\=62.6$

In point b:

$\to var(A-B)=varA + var B - 2 cov(A,B)$

$=25+36-2(0.8)\\\\=25+36-1.6\\\\=59.4$

The relationship between the top 20 students is also slight, so the top 20 students are more university-like than all secondary students.

7 0

3 years ago