2 years ago

Please help i need this in the next 5 minutes

Mathematics

1 answer:

nadya68 [22]2 years ago

7 0

The answer is 110 degrees.

Hope it helps!

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Jamal works as an electrician’s apprentice. He rewired 4 electrical outlets in 1 1/2 hours. If he works at the same pace for 7.5

RSB [31]

This can be solve by first solving the proportionality constant

Number electic outlets rewired is directly proportional to time spent

4 = (1 ½)a

Let be the proportionality constant

A = 8/3

O = (8/3)(7.5)

o = 20 outlets will jamal rewired if he works for 7.5 hrs

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2 years ago

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Randy buys gas at a store that charges $3 per gallon. Sarah buys gas at a different store. The table shown here gives the cost w

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Where is the table??

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14 friends go out for dinner and the bill for food and drink comes to £130. The friends decided to add a 5% tip on the top of th

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The amount each friend does pay is £9.75

<h3>How to calculate the pay of each friend using fractions and arithmetic operations?</h3>

We are going to find 5% of the total amount paid and divide it by the numbers of all the friends to determine the amount paid by each one of them.

From the given information:

The 5% of 130 = £6.5
Total amount paid = £130 + £6.5 = £136.5

Therefore, the cost of each friend is = $\dfrac{136.5}{14}$

The cost of each friend = £9.75

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1 year ago

The area of a square is 50 square yards. What is the length, in yards, of one side of the square?

Elena L [17]

Answer:

$area \: of \: a \: square = {x}^{2} \\ here \: {x}^{2} = 50 \\ x = \sqrt{50} = \sqrt{2 \times 25} = 5 \sqrt{2} \\ one \: side = 5 \sqrt{2} yard$

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2 years ago

In psychology, there is a particular Mental Development Index (MDI) used in the study of infants. The scores on the MDI have app

ivann1987 [24]

Answer:

0.1587

Step-by-step explanation:

Here, mean=μ=100 and standard deviation=σ=16.

We have to find P(average MDI scores of 64 children > 102)=P(xbar>102).

n=64

μxbar=μ=100

σxbar=σ/√n=16/√64=16/8=2

P(xbar>102)=P((xbar-μxbar)/σxbar>(102-100)/2)

P(xbar>102)=P(z>1)

P(xbar>102)=P(0<z<∞)-P(0<z<1)

P(xbar>102)=0.5-0.3413

P(xbar>102)=0.1587

Thus, the probability that the average is greater than 102 is 15.87%

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2 years ago