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AfilCa [17]
3 years ago
13

To prepare for virtual learning the school is purchasing extra keyboards, mice, and PC cameras. They have a budget of $1500 to s

pend on $30 keyboards, $20 mice, and $50 cameras. Additionally, the number of mice should be equal to that of keyboards and twice the number of cameras. How many of each item should he buy?
explain please​
Mathematics
1 answer:
leonid [27]3 years ago
7 0

Answer:

20 keyboards and mice, 10 cameras.

Step-by-step explanation: They need the same number of keyboard and mice, and they want to get half the amount of cameras they do keyboard and mice. They have a budget of $1500 so 20 keyboards and mice as well as 10 cameras is the most optimal purchase.

30*20=600

20*20=400

50*10=500

600+400+500=1500

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A student wants to find the answer to the question “What is the most popular restaurant in Bedford?” He asks 20 randomly selecte
Nadusha1986 [10]
The sample is not going to be accurate because it's at the same restaurant in Bedford and there more likely to say the place there eating at
6 0
4 years ago
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Drag the tiles to the correct boxes to complete the pairs match each pair of rational numbers with their sum -2/a^b+2/ab^2
Alexus [3.1K]

The pair of rational numbers with their sum are matched.

<h3 /><h3>What is rational number?</h3>

The numbers in the form of p/q is called the rational number.

1. -2/a²b +2/ab² = ( -2ab² +2a²b) / a³b³

                          = 2(a-b)/a²b²

2. 1/2ab -1/4a²b² =( 4a²b² -2ab) / 8a³b³

                            = 2ab -1 /4a²b²

3. 2/a²b³ -2/ab = (2ab -2a²b³) / a³b⁴

                         = 2( 1- ab²) /a²b³

4. 1/ab³ -1/a²b = a²b - ab³ / a³b⁴

                       = (a - b²) / a²b³

Thus, all the rational numbers are matched with their sum.

Learn more about rational numbers.

brainly.com/question/17450097

SPJ1

5 0
3 years ago
1 + 2k = 5k + 7 I got k=2 don't know if it's the right answer ?
DochEvi [55]
You are close, but it is not the correct answer.

1 + 2k = 5k + 7

First, since we are trying to get the variable by itself, we need to move all things to one side. Let's subtract 1 from each side. 
2k = 5k + 7 - 1

Second, we can now subtract (7 - 1) to get 6. Let's add that into our problem and then subtract 5 from each side, still trying to get the variable by itself.
2k - 5k = 6

Third, subtract (2k - 5k) to get -3k. Hint the negative symbol now. If the problem were switched the other way, it would still be a positive. 
-3k = 6

Fourth, we can now divide each side by -3. This results in a fraction and also getting the variable by itself on one side of the problem. Remember the negative sign in front of the fraction since (-3) carried it.
k = - \frac{6}{3}

Fifth, this is our last step. We need to simplify the fraction. Since out fraction is 6/3, which number multiples by 3 to get the answer of 6? The answer is 2, since (3 × 2 = 6). Don't forget the negative!
k = -2

Answer: \fbox {k = -2}
4 0
4 years ago
The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the f
geniusboy [140]

Answer:

The answer is "266.5".

Step-by-step explanation:

Given value:

115, 370, 250, 93, 540, 225, 177, 425, 318, 182, 275, and\  228.

find:

Sample mean=?

=\frac{\text{total dental expenses}}{number \ of \ employees}

=\frac{115+370+250+93+540+ 225+ 177+ 425+ 318+ 182+ 275+228}{12}\\\\=\frac{3,198}{12}\\\\=266.5\\\\

7 0
3 years ago
Hello how was your day​
pogonyaev

Answer:

Good hbu

Step-by-step explanation:

5 0
3 years ago
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