How do I do these? can someone please help

Answers

Answer 1

Answer: -4/3x<12
multiply both sides by -3/4 to make it 1x (-4/3 times -3/4=-12/-12=1)
x<-36/4
x<-9

13c<-169
divide both sidse by 13
c<-13

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4^(x-1) + 4^x + 4^(x+1)= 21
Which expressions are equivalent to the expression −6x + 8? Select all that apply. 1. −2(3x + 4) 2. 2(−3x + 4) 3. 5(x + 1) − 11x + 3 4. x + 2 − 7x + 6 5. 8 − 6x

What is the value os f(150), And what does f(150) represent?

Answers

f(150) = 3×150 + 20 = 470

Final answer:

f(150) refers to a function f applied to the input 150. Without information about the form of function 'f', we can't tell the specific value of f(150). The value of f(150) symbolizes the outcome after applying the function 'f' to 150.

Explanation:

The question is asking about f(150) which relates to the concept of function in Mathematics. In a function f(x), the input is represented by 'x', and the output, which is the result of applying the function to 'x', is represented by f(x). Therefore, f(150) means that the function f is being applied to the number 150. Without any specific information about the function 'f', we cannot determine the exact value of f(150). The value of f(150) represents the outcome resulted by applying the function 'f' to the input 150.

Learn more about Functions here:

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6.5 was added to a certain number. This sum was then divided by 13.6. Finally, the quotient was multiplied by 5. This product came out to 5. What was the number

Answers

Answer:

7.1

Step-by-step explanation:

Here's how we have to set this up. We will start with the first statement, which algebraically looks like this:

x + 6.5 = y (since we don't know what x is, we don't know what the sum of x and 6.5 is. We will call that new number y.)

Next, we are dividing that sum, y, by 13.6:

$(y)/(13.6)=z$ (again, since we don't know what y is, we don't know what y divided by 13.6 is. We will call that new number z.)

Finally, the quotient, z, is multiplied by 5:

Now we work backwards, subbing in our unknowns, one at a time.

If z = $(y)/(13.6)$ , we sub it into the expression 5z:

$5((y)/(13.6))$ and

if y = x + 6.5 we plug that in for y:

$5((x+6.5)/(13.6))=5$ since we know that whole mess is equal to 5. NOw we solve for x, the original number. Begin by dividing both sides by 5 to get:

$(x+6.5)/(13.6)=1$

Now multiply both sides by 13.6 to get:

x + 6.5 = 13.6 so

x = 7.1

Check this if you'd like by plugging in the 7.1 for x in the intial equation to solve for y, then plug that into the next equation to solve for z, then see if they're equal (they are, but test it out for yourself).

To find the value of a mathematical expression using the order of operations is to?

Answers

Answer:

evaluate

Step-by-step explanation:

I think your looking for PEMDAS. Typical you would find the value of the ,ath expression using PEMDAS. PEMDAS stands for Parentheses Exponents Multiplication Division Addition Subtraction. When using PEMDAS (order of operation) you have to use each letter in order, So look for parentheses and if their aren't any look for the exponents which would look like $x^(2)$ then you would do all multiplication and division then addition and subtractions

Suppose y varies directly with x, and y=24 when x=8. what is the value of y when x=10?

Answers

varies directly
y vaires diretly with x means
y=kx where k is constant
y=24
x=8
find k
24=k8
divide 8
3=k

y=3x
when x=10
y=3*10
y=30

Find the slope and the y-intercept of the graph of y + 1 = x.

Answers

Answer: The slope is 4/3

Step-by-step explanation:

Whatever number is attatched to the "x" is the slope.

Answer:

Slope: M = 4/3

Y-Intercept: : (0,−1)

Step-by-step explanation:

Which of the following statements contain a variable? Check all that apply.A. The number of different colors on the page.
B. They scored 27 points.
C. Eighty miles per hour.
D. Half the speed of the car.

Answers

A. The number of different colors on the page.

D. Half the speed of the car.

These statements contain variables representing unknown quantities or values.

Variables in mathematics and science are symbols that represent unknown values or quantities. Let's analyze each statement to identify the ones containing variables:

A. "The number of different colors on the page."

This statement contains a variable because it represents an unknown quantity, the number of colors.

B. "They scored 27 points."

This statement does not contain a variable as it explicitly states a specific value (27 points).

C. "Eighty miles per hour."

This statement does not contain a variable as it provides a specific constant value (80 miles per hour).

D. "Half the speed of the car."

This statement contains a variable because it represents an unknown value, which would depend on the actual speed of the car.

In summary, the statements containing variables are:

A. The number of different colors on the page.

D. Half the speed of the car.

These statements represent quantities that can vary, making them suitable for mathematical or scientific analysis where variables are used to express relationships and solve equations.

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The correct answers are:

A) the number of different colors on the page; and
D) half the speed of the car.

Explanation:

A variable represents an unknown amount.

For A, we do not know how many colors are on the page; this means we would use a variable to represent it.

For D, while we know we want half of the speed of the car, we do not know what the speed of the car actually is; therefore we would use a variable to represent it.