P = 4 + 2w - 5 for w

William says that 15 years from now, his age will be 3 times his age 5 years ago. if x represents William's present age, what eq

myrzilka [38]

Answer:

x + 15 = 3 (x - 5)

William’s current age: 15. Years old

Step-by-step explanation:

x + 15 = 3(x-5)

x + 15 = 3x - 15

15 + 15 = 3x - x

30 = 2x

x = 15

8 0

3 years ago

A Boston subway train traveling at constant speed traveled 10.1 miles in half an hour. What was the speed of the subway train?

Klio2033 [76]

Speed of the train : distance traveled / time of the travel = 10.1/(0.5)=20.2 mph. Hope this helped!

7 0

4 years ago

Read 2 more answers

For which value of X is the row in the table of values incorrect? The function is the quadratic function Y=3/4x^2

svet-max [94.6K]

Answer:

The row with x = 2 and y = 4 is incorrect. The y value should be y = 3 when x = 2.

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Explanation:

Fractions can be a bit of a pain, so I'm going to be converting to decimal form to help with the computation; however, I will convert the y value results to mix number form so that it matches what the table shows.

Keep in mind that 3/4 = 0.75 when you use a calculator or long division. So a number like 2.75 means 2 & 3/4 (two and three quarters)

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Let's check the first row. Plug in x = 0 and it leads to...

y = (3/4)*x^2

y = (3/4)*0^2

y = (3/4)*0

y = 0.75*0

y = 0

This shows us that row 1 is correct. When x = 0, y = 0 leading to (x,y) = (0,0).

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Repeat the same basic outline of steps, but now use x = 2

y = (3/4)*x^2

y = (3/4)*2^2

y = (3/4)*4

y = 0.75*4

y = 3

So instead of 4, the proper y value is y = 3 when x = 2. This means row 2 is the answer (the row that has the incorrect values).

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For the sake of completeness, let's see if the third row is correct or not. Plug in x = 3

y = (3/4)*x^2

y = (3/4)*3^2

y = (3/4)*9

y = 0.75*9

y = 6.75

y = 6 & 3/4

We see that x = 3 points to y = 6 & 3/4, so we have the correct values in this row. We can cross this off the list of choices.

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Finally, let's check x = 5

y = (3/4)*x^2

y = (3/4)*5^2

y = (3/4)*25

y = 0.75*25

y = 18.75

y = 18 & 3/4

We get the proper y value. So we can also cross this off the list.

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=55.89%20%5Cdiv%209" id="TexFormula1" title="55.89 \div 9" alt="55.89 \div 9" align="absmiddle"

jasenka [17]

6.21
This is the answer

6 0

3 years ago

Read 2 more answers

What is absolute value of 15

Scorpion4ik [409]

Answer:

$15$

Step-by-step explanation:

Step 1: Determine what absolute value does

According to online, the following is given: "The absolute value (or modulus) | x | of a real number x is the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line."

Step 2: Determine the absolute value of 15

Since we know that the absolute value gives us the non-negative value of the given number regardless of its sign, we can determine that the absolute value of 15 would just return us 15.

Answer: $15$

4 0

2 years ago

P = 4 + 2w - 5 for w​

P = 4 + 2w - 5 for w