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3 years ago

Please help with problems 20 and 21 (IF YOU KNOW BOTH)

Mathematics

1 answer:

irakobra [83]3 years ago

8 0

Number twenty-one is one and three-fourths

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1 /x^−1 in simplest rational form

Allushta [10]

Here is a link to help you find the answer:
https://www.khanacademy.org/math/algebra2/rational-expressions-equations-and-functions/simplify-rati...

Hope this helps!

3 0

3 years ago

Carlos runs 7 miles in 57 3/4 mins. how fast did he run each mile?

san4es73 [151]

To find how much minutes Carlos runs each mile, you must first multiply 57.75 by 1 which is 57.75 because 57 3/4 and 57.75 is the same thing. Next, you must divide 57.75 by 7. Therefore, Carlos runs 8.25 minutes a mile.

3 0

3 years ago

Richard wants to make a garden with a perimeter of 16 feet, and length of 4 feet. He solves for the width by subtracting 8 from

Ostrovityanka [42]

The equation that can be used to solve this is:

$P =2W+2L\\OR\\P-2L = 2W\\\frac{P-2L}{2} = W$

Further explanation:

Let

$P\ be\ the\ perimeter\\L\ be\ the\ width\\W\ be\ the\ width$

The equation for the perimeter will be:

$P =2W+2L$

Given

P = 16 feet

L = 4 feet

W = ?

Putting the values in the perimeter formula

$16=2(4)+2W\\16=8+2W\\16-8= 2L\\8=2L\\L=\frac{8}{2}\\L=4\ feet$

The equation that can be used to solve this is:

$P =2W+2L\\OR\\P-2L = 2W\\\frac{P-2L}{2} = W$

Keywords: Periemter of rectangle, linear equation

Learn more about perimeter of rectangle at:

#LearnwithBrainly

3 0

3 years ago

Heath has 10 pennies in his piggy bank initially. He doubles the number of pennies in his piggy bank each day for five days. wri

vaieri [72.5K]

Answer:

y = 10 * 2^x

y(5) = 10 * 2^5

Day 0 = 10 pennies: Point(0, 10)

Day 1 = 20 pennies: Point(1, 20)

Day 2 = 40 pennies: Point(2, 40)

Day 3 = 80 pennies: Point(3, 80)

Day 4 = 160 pennies: Point(4, 160)

Day 5 = 320 pennies: Point(5, 320)

Step-by-step explanation:

Heath has 10 pennies, so pennies = 10.

He doubles the number of pennies each day, so total pennies = 10 * 2 to the power of # of days.

Using the equation y = 10 * 2^x will give you the answer for any number of days. Since the problem asks for 5 days, you plug in 5 for x. On the graph, this would be a single point (5, 320).

So, plot the 6 points you have and connect a curved line through it. That should be your answer.

5 0

4 years ago

Jeremy gives his horse 12 gallons of water each day how many 1 quart pail of water is that?

Kamila [148]

4 quarts in one gallon
12gallons is 48 quarts

6 0

4 years ago