What is the value of the function y = 0.5x – 10 when x = 9?

Answers

Answer 1

Answer: To find the value of the given function first lets substitute the value of x in the equation;

y = 0.5x - 10
y = 0.5(9) -10
y = 4.5 - 10
y = -5.5
hope this helps :)

Answer 2

Answer: inpus 9 for x
y=0.5(9)-10
y=4.5-10
y=-5.5

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Solve the proportions. Round the result to three significant digits if necessary.×/38 = 45/63

Answers

$(x)/(38)=(45)/(63)\nx\cdot63=38\cdot45\n63x=1710\nx\approx27.1$

What is the least common multiple of 21 and 25?

Answers

Answer:

LCM(21,25) = ( 21 × 25) / 1

LCM(21,25) = 525 / 1

LCM(21,25) = 525

Step-by-step explanation:

Mark me brainlist

Answer:

its 525 fam

Step-by-step explanation:

How many times does 6 go into 50

Answers

The division of 50 by 6 is 8, with a remainder of 2. Therefore, 6 goes into 50 eight times.

Division of Numbers

Division is the process of splitting a quantity into equal parts or determining how many times one number is contained within another number. During division of Numbers, there are some numbers you will divide without remainders and there are some with remainders.

The remainder is the amount left over after dividing as much as possible. If there is a remainder, you can choose to express the division as a mixed number (a whole number plus a fraction) or as a decimal.

Division is represented by this sign ÷ or /. There are dividends, divisor and quotient. The dividend is the number that you want to divide. It is the quantity that you are trying to split or distribute. The divisor is the number by which you divide the dividend.

The quotient is the result of the division and represents the number of times the divisor is contained within the dividend.

Learn more about division of Numbers here

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It goes in 8 times use division to work the problem. 50/6= 8.3 so it can go in 8 times fully

The circumfrence of a circle is 16TT

Answers

The formula for a circumference of a circle is: C=2πr
and we are given the answer as
C=16π

Therefore we know that 16 is from the combination of multiplying 2 and r
So to find r we do the opposite of what is done. The opposite of multiplying is dividing, therefore:
16/2=8
therefore r = 8

The formula for the area of a circle is: A=πr^2
Since we know r = 8 we just sub it into the equation

A=π*8^2
A=64π or (assuming you want π to two decimal places: 3.14 then) 200.96

There are currently 3 people signed up for the debate club. The school will not recognize the club officially until it has more than 5 members. Which of the following graphs includes the possible values for the number of people who still need to sign up to make the club "official?" Number line with closed circle on 2 and shading to the left. Number line with closed circle on 2 and shading to the right. Number line with open circle on 2 and shading to the left. Number line with open circle on 2 and shading to the right.

Answers

Answer:

Step-by-step explanation:

its two

Sin A - 2 sin cube A
---------------------------
2 cos cube A - cos A

Answers

$(sin\alpha-2sin^3\alpha)/(2cos^3\alpha-cos\alpha)=(sin\alpha(1-2sin^2\alpha))/(cos\alpha(2cos^2\alpha-1))=(sin\alpha(1-sin^2\alpha-sin^2\alpha))/(cos\alpha(cos^2\alpha+cos^2\alpha-1))\n\n=(sin\alpha(cos^2\alpha-sin^2\alpha))/(cos\alpha(cos^2\alpha-sin^2\alpha))=(sin\alpha)/(cos\alpha)=tan\alpha\n\n\nsin^2\alpha+cos^2\alpha=1\to cos^2\alpha=1-sin^2\alpha\nsin^2\alpha+cos^2\alpha=1\to sin^2\alpha=1-cos^2\alpha\to-sin^2\alpha=cos^2\alpha-1$

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