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3 years ago

Which choice describes a question that could be answered by moving the decimal point 3 places to the right?

1 answer:

7 0

When you multiply by 100 you have to move the decimal place 2 places to the right.

When you multiply by 1,000 you have to move the decimal place 3 places to the right.

When you multiply by 102 and 103, there is no simple trick as with multiplying by 100 or 1,000.

Your final answer is B. <span>multiplying 31.04 by 1,000</span>

You might be interested in

Which of the following expressions are equivalent to 312?

lord [1]

Answer:

3(4+3^2)×8

Step-by-step explanation:

Evaluate the power

3(4+9)×8

Add the numbers 3×13×8

Calcuate the product and it will be 312

So the expression 3×(4+3^2)×8 are equivalent to 312

Hope this helpsʕ•ᴥ•ʔ

4 0

3 years ago

The equation of line t is y = -2x + 9. Perpendicular to line t is line u, which passes through

Archy [21]

Answer:

Equation of line u in slope-intercept form is: $\mathbf{y=\frac{1}{2}x+9 }$

Step-by-step explanation:

Equation of line t : y = -2x + 9.

We need to find equation of line u, which is perpendicular to line t and passes through point (-10,4)

The equation must be in slope-intercept form.

The general equation of slope-intercept form is: $y=mx+b$ where m is slope and b is y-intercept

Finding Slope:

If two lines are perpendicular, their slopes are opposite i.e $m=-\frac{1}{m}$

Slope of line t: y=-2x+9 we get m =-2 (Comparing with general form y=mx+b, we get m =-2)

Slope of line u: $\frac{1}{2}$

So, we get Slope of line u: m= $\frac{1}{2}$

Finding y-intercept:

Using slope m= $\frac{1}{2}$ and point(-10,4) we can find y-intercept

$y=mx+b\\4=\frac{1}{2}(-10)+b\\4=-5+b\\b=4+5\\b=9$

Equation of line u:

So, equation of line u, having slope m= $\frac{1}{2}$ and y-intercept b=9, we get:

$y=mx+b\\y=\frac{1}{2}x+9$

So, Equation of line u in slope-intercept form is: $\mathbf{y=\frac{1}{2}x+9 }$

4 0

3 years ago

Pam and her brother both open savings accounts. Each begin with a balance of zero dollars.For every two dollars that pam saves i

zheka24 [161]

Pam and her brother both open savings accounts. Each begin with a balance of zero dollars. For every two dollars that Pam saves in her account, her brother saves five dollars in his account.
1. Determine a ratio to describe the money in Pam’s account to the money in her brother’s account. :

2. If Pam has dollars in her account, how much money does her brother have in his account? Use a tape diagram to support your answer.

Pam’s brother has dollars in his account.

3. Record the equivalent ratio. :

4. Create another possible ratio that describes the relationship between the amount of money in Pam’s account and the amount of money in her brother’s account. Answers will vary. :, :, etc.
I hope I helped! :)

4 0

3 years ago

***PLEASE GIVE ME THE ANSWER*** I really need help I’m not very smart

Inessa [10]

Answer:

x=10

Step-by-step explanation:

110 and 8x + 30 are vertical angles, which means they are equal

110 = 8x+30

Subtract 30 from each side

110-30 = 8x+30 -30

80 = 8x

Divide each side by 8

80/8 = 8x/8

10 =x

7 0

3 years ago

A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 2x. Find the height of t

n200080 [17]

$\bf \textit{volume of a cylinder}\\\\
V_c=\pi r^2h\qquad 
\begin{cases}
r=radius\\
h=height\\
------\\
r=x\\
h=y
\end{cases}\implies V_c=x^2y\pi 
\\\\\\
\textit{volume of a cone}\\\\
V_n=\cfrac{\pi r^2h}{3}\qquad r=2x\implies V_n=\cfrac{\pi \cdot (2x)^2h}{3}
\\\\\\
V_n=\cfrac{\pi \cdot 2^2x^2h}{3}\implies V_n=\cfrac{4x^2h\pi }{3}\\\\
-------------------------------\\\\$

$\bf V_c=V_n\implies x^2y\pi =\cfrac{4x^2h\pi }{3}\implies 3x^2y\pi =4x^2h\pi 
\\\\\\
\cfrac{3x^2y\pi }{4x^2\pi }=h\implies \boxed{\cfrac{3y}{4}=h}$

5 0

3 years ago