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Hatshy [7]
3 years ago
15

Jessica wants to go to Mexico for spring break.The total cost includes round trip airfare of $150 and $40 per night for a hotel.

She can spend a maximum of $300.Which inequality can be used to find the maximum number of nights Jessica can afford?
Mathematics
1 answer:
mars1129 [50]3 years ago
6 0

Answer:

150 + 40x ≤ 300

Step-by-step explanation:

The flat rate is $150.  "Per" represents multiplication.  $40 per night = 40x

Since she can only spend a MAXIMUM, the sign would be ≤ (less than or equal to) because she can't go over $300.

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I NEED HELP PLEASE HELP ME
Aloiza [94]
Answer:
294.14cm^2

Explanation:

First find the area of the whole piece of paper:
32*14=448

Then find the area of the two semicircles, semicircle + semicircle = 1 circle:

Area of a circle= (radius squared)(pi):
(7^2)(3.14) = 153.86

Subtract the area of the two semicircles from the whole paper area:
448-153.86 = 294.14


I hope this isn’t too confusing :)


5 0
3 years ago
Which expression is NOT equivalent to 12x + 18y?
Damm [24]

Answer:

D

Step-by-step explanation:

3 (4x + 18y) means that 3 will multiply 4x and 18y factor which results to 12x + 54y

hence dissimilar to the original expression

4 0
3 years ago
The standard deviation of a sample taken from population A is 17.6 for a sample of 25.
lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation \sigma_A is

\sigma_A = 17.6

The sample size n_A is:

n_A = 25.

For the sample of population B, the standard deviation \sigma_B is

\sigma_B = 21.2

The sample size n_B is:

n_B = 30.

Then the standard deviation for the difference of means has the following form:

\sigma=\sqrt{\frac{\sigma_A^2}{n_A}+\frac{\sigma_B^2}{n_B}}

Finally

\sigma=\sqrt{\frac{17.6^2}{25}+\frac{21.2^2}{30}}\\\\\sigma= 5.23

7 0
3 years ago
The charge is $12 plus $0.15 per tree. What is the greatest number of trees that can be planted if you spend no more than $70
notsponge [240]

Answer:

386

Step-by-step explanation:

If you subtract the initial fee of 12 from 70 you get 68 you just divide that by .15 meaning you can plant no more that 386 trees.

8 0
2 years ago
Read 2 more answers
2. In a relationship between variables, what is the variable called that changes in response to
valkas [14]

Answer:

A dependent variable

Step-by-step explanation:

is a variable whose value will change depending on the value of another variable, called the independent variable. Dependent variables are also known as outcome variables, left-hand-side variables, or response variables.

4 0
2 years ago
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