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3 years ago

Heeeeeeelp pleasee pleasee

Mathematics

1 answer:

natima [27]3 years ago

8 0

I'm going to convert all the values given to you in percentages, so hopefully you should be able to see the correct answer a little clearer. :)

Debbie said that 21/50 drink coffee in the morning. 21/50 can also be written as 42/100, and now that it's out of 100, it's basically a percentage. (42%).

Allen said that 45% of people drink coffee in the morning. His value is already written as a percentage, so we won't do anything with it.

Benny says that 0.495 of the people he surveyed drink coffee in the morning. 0.495 is the same as 49.5% (multiply it by 100 to get it in a percentage).

So, in Debbie's survey, 42% of people drink coffee.
In Allen's survey, 45% of people drink coffee.
In Benny's survey, 49.5% of people drink coffee.

Therefore, the answer is Benny's survey. :)

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If sin x = 12÷13 where 0° <x<90°<br>find the value of 1-cos ×cos( x)

s2008m [1.1K]

Answer:

This is how tackle this type of problem:

Draw a right triangle with the indicated sides: side opposite the angle = 12 and hypotenuse = 13

Then, calculate the 3rd side by Pythagoras: x2 + 122 = 132

x2 = 169 - 144

x2 = 25

x = 5

Now, we have all 3 sides of our diagram triangle, so we can find all the trig ratios for the angle.

Next, we use the double angle formula to simplify cos(x + 30) = cos x cos 30 - sin x sin 30

= 5/13 . √3/2 - 12/13 . 1/2

= 5√3 /26 - 6/13

= (5√3 - 12) / 26

Step-by-step explanation:

please mark me as brainlist please hi

4 0

2 years ago

The Carter family just left the local pet store with Rex, their new family dog. The pet store owner told the Carter family that

Ksenya-84 [330]

The graph is attached and all the sub parts have been answered.

<h3>What is a function ?</h3>

A function is away of relating a dependent variable to an independent variable .

It is given that

Current weight of Rex at 2 months =6 pounds

Let x represents the age in months of Rex

then a linear model that represents the Rex’s current weight, in pounds, as a function of his age, in months. is

Let y be the current weight of Rex

then

y = 6 + 9(x -2)

The table that represents Rex’s current weight, in pounds, as a function of his age, in months

2 6

3 15

4 24

5 33

6 42

7 51

8 59

The graph is plotted for the given data and attached .

If Rex continues to grow at the rate of 9 pounds per month beyond the expected six months, how much will Rex weight by the time he is one year old

6 + 9*(12-2)

96 pounds.

To know more about Function

brainly.com/question/12431044

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4 0

1 year ago

Your bike was originally purchased for $1,200. It loses about 8% of its original value each year. Write an equation to represent

Arlecino [84]

Answer:

y= 1200(0.92)^x

Step-by-step explanation:

Given data

Cost price= $1200

Rate of decrease= 8%

Let the time be x

The expression that describes an exponential function is

y= ab^x

for decrease b= 1-r

y= 1200(1-0.08)^x

y= 1200(0.92)^x

Hence the expression is

y= 1200(0.92)^x

7 0

2 years ago

PLEASE HELP ITS DUE IN 5 MINUTES

babunello [35]

Y - 18 = -1.5(x - 12)

I hope this helped out! Have a nice day :)

(Good luck!)

8 0

2 years ago

Step 1: pick a number

Bogdan [553]

If I pick n, it becomes 50(2n+5)+1764-2001 this is the expression

7 0

2 years ago