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monitta
3 years ago
12

Please help me I don’t understand this

Mathematics
1 answer:
Tomtit [17]3 years ago
4 0

Answer:64

Step-by-step explanation:

67

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Can you pls help me, i need it
natita [175]

according to the topic

5000+1400+1700+2200-5000×80%+1200

=55300-4000+1200

=$52500

Thus we choose option B

B.$52,500

8 0
3 years ago
The cost of 5 gallons of ice cream has a variance of 64 with a mean of 34 dollars during the summer. What is the probability tha
andriy [413]

Answer:

Probability[(X - μ) < 1.1] = 0.6046

Step-by-step explanation:

Given:

σ² = 64

Mean μ = 34

Find:

Probability[(X - μ) < 1.1]

Computation:

Standard deviation σ = √σ²

Standard deviation σ = √64

Standard deviation σ = 8

Probability[(X - μ) < 1.1] = Probability[-1.1 < (X - μ) < 1.1]

Probability[(X - μ) < 1.1] = Probability[-1.1/(8/√38) < (X - μ) < 1.1/(8/√38)]

Using z table

Probability[(X - μ) < 1.1] = 0.6046

7 0
3 years ago
Determine the dimensions of the screen of a 42-inch TV with a 4:3 aspect ratio.
Nitella [24]

For this case, the first thing you should do is know that the measurement of a television is given by the diagonal of the television.

Therefore, to find the value of x, we use the Pythagorean theorem.

We have then:

(3x)^2+(4x)^2=42^2

Rewriting we have:

25x ^ 2 = 1764\\x = \sqrt {\frac {1764} {25}}\\x = \sqrt {70.59}\\x = 8.4

Then the dimensions are given by:

4x = (4 * 8.4) = 33.6\\3x = (3 * 8.4) = 25.2

Answer:

the dimensions of the screen are: 33.6* 25.2

5 0
3 years ago
Read 2 more answers
Alexia used three teams of paper in her first semester of school. Each team has the same number of sheets. She used another 40 s
AysviL [449]
3x + 40, where x is the amount of sheets in each team 
6 0
3 years ago
alex earned $20. he earned 1/4 of the amount rob earned. how much did rob earn? write an equation to match.
Soloha48 [4]
S=80/4x1 
20x4/1 equation
6 0
3 years ago
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