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2 years ago

7

A box contains 421 books. If your teacher orders 19 boxes of books, about how many books will arrive? Use estimation to find you

r answer.

2 answers:

koban [17]2 years ago

8 0

The answer is 8,000 because 19 times 421 equals 7,888 and that estimated is 8,000

elena-14-01-66 [18.8K]2 years ago

3 0

19 * 421 = 7,999 books will arrive

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What is 17/147 in lowest terms

katovenus [111]

Hi there!

To find your answer, let us see what number can go evenly into 17 and 147.

$\frac{17}{147}$

Since it looks like nothing can go into each number evenly, $\frac{17}{147}$ is already simplified down to its lowest terms and it can't go any lower than that.

Hope this helps! :D

Message me if you need anymore help on anything!

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2 years ago

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Which expression is equivalent to<br> (5^-2)(5^-1)<br> A. -1/125<br> B. -1/5<br> C.1/125<br> D.1/5

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2 years ago

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nadya68 [22]

Answer:

$y=\frac{\displaystyle 3}{\displaystyle 50}x+\frac{\displaystyle 13}{\displaystyle 10}$

Step-by-step explanation:

Hi there!

Slope-intercept form: $y=mx+b$ where $m$ is the slope and $b$ is the y-intercept (the value of y when x is 0)

<u>1) Determine the slope (</u><u><em>m</em></u><u>)</u>

$m=\frac{\displaystyle y_2-y_1}{\displaystyle x_2-x_1}$ where two given points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug in the given points (15,2.2) and (5,1.6):

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Therefore, the slope of the line is $\frac{\displaystyle 3}{\displaystyle 50}$ . Plug this into $y=mx+b$ :

$y=\frac{\displaystyle 3}{\displaystyle 50}x+b$

<u>2) Determine the y-intercept (</u><u><em>b</em></u><u>)</u>

$y=\frac{\displaystyle 3}{\displaystyle 50}x+b$

Plug in a given point and solve for b:

$1.6=\frac{\displaystyle 3}{\displaystyle 50}(5)+b\\\\1.6=\frac{\displaystyle 3}{\displaystyle 10}+b\\\\1.6-\frac{\displaystyle 3}{\displaystyle 10}=\frac{\displaystyle 3}{\displaystyle 10}+b-\frac{\displaystyle 3}{\displaystyle 10}\\\\\frac{\displaystyle 13}{\displaystyle 10}=b$

Therefore, the y-intercept is $\frac{\displaystyle 13}{\displaystyle 10}$ . Plug this back into $y=\frac{\displaystyle 3}{\displaystyle 50}x+b$ :

$y=\frac{\displaystyle 3}{\displaystyle 50}x+\frac{\displaystyle 13}{\displaystyle 10}$

I hope this helps!

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Snowcat [4.5K]

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Minchanka [31]

Answer:

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Step-by-step explanation:

Completing the square for x and y terms can help you put this in the standard form.

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2 years ago

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