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3 years ago

Eight less than the product of two and a number x xx.

Mathematics

2 answers:

avanturin [10]3 years ago

6 0

2x -8 that’s how u write it in an expression

sergeinik [125]3 years ago

3 0

Answer:

Hi!

The correct answer is 2x - 8.

Step-by-step explanation:

To construct the expression is convenient to do it by parts.

First: Eight less than a number x is: x - 8.

For example if x = 10, eight less than 10 is 2. 10 - 8 = 2.

Second: The product of two and a number x is: 2x.

For example if x = 10, the product of two and 10 is 20. 2*10 = 20.

Third: Eight less than the product of two and a number x: 2x - 8

For example if x = 10, eight less than the product of two and 10. 2*10 - 8 = 12.

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2.) What value for c will make the expression a perfect square trinomial?

andre [41]

Answer : $\frac{49}{4}$

Given expression is $x^2 - 7x + c$

To make perfect square trinominal we use completing the square method

In completing the square method we add and subtract the half of square of coefficient of middle term

Here coefficient of middle term is -7

Half of -7 is $\frac{-7}{2}$

Square of $\frac{-7}{2}$ is $(\frac{-7}{2})^2$ = $\frac{49}{4}$

So the expression becomes $x^2 - 7x + [tex] \frac{49}{4}$ that gives perfect square trinomial

Hence , the value of 'c' is $\frac{49}{4}$

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3 years ago

Read 2 more answers

What is the graph of y=-9

sergij07 [2.7K]

It's a horizontal line y = -9.

Look at the picture.

Answer: B.

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4 years ago

1. f(x) + 3

lora16 [44]

Answer:

Step-by-step explanation:

Correct me is I'm wrong but I believe its a independent variable.

6 0

3 years ago

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Tomtit [17]

a) The cost for 10 mile taxi ride is $18

b) The cost for m mile taxi ride is 1.5 m + 3

Step-by-step explanation:

Step 1 :

The fixed charges for the pick up = $3

Charges per mile = $1.50

Let s denote the total miles driven and t be the total cost for the trip

This can be represented by the equation

t = 3 + 1.5s

Step 2:

Distance traveled by Jonathan in his trip = 10 miles

So cost for riding 10 miles is

t = 3 + 1.5(10) = 3 + 15 = $18

The cost for 10 mile taxi ride is $18

Step 3 :

If the distance traveled is m miles, then substituting s = m in the above equation we get the cost as 1.5 m + 3

Step 4 :

Answer :

a) The cost for 10 mile taxi ride is $18

b) The cost for m mile taxi ride is 1.5 m + 3

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3 years ago

14. A number is four times the product of

Stolb23 [73]

Answer:

A. 4(0*8)=x

B. x=0

C. I used the zero product property

Step-by-step explanation:

For part B, I did 0*8 which is 0

then 0*4=0

this means that x=0

6 0

3 years ago