3 years ago

I need help pleaseeeeee

Mathematics

1 answer:

My name is Ann [436]3 years ago

5 0

I think it’s 18 x hope this helps

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84 = 4(1– 49)<br><br> please give an explanation

aalyn [17]

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2 years ago

How do you solve for b and c?

dangina [55]

C:
6*2 = 2.5c
c = 4.8

b:
Cannot be solved until the measure of one other angle in the X is added.

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3 years ago

Please help me... there will be 7 more questions where that came from

Aleksandr [31]

168 students because 28% of 600 is 168.

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3 years ago

Two out of every 5 costumers at a restaurant use cash to pay for their meal. What percent of the costumers pay with cash?

Gnoma [55]

Answer:

40%

Step-by-step explanation:

Percent means out of 100

Multiply the top and bottom by 20 to get the bottom to 100

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3 years ago

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What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

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3 years ago