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2 years ago

it’s take 4 minutes to fill an empty aquarium to a depth of 2/5 meters. what is the unit rate in minutes per meter?

Mathematics

1 answer:

devlian [24]2 years ago

6 0

Answer:

1/10 meter per minute

Step-by-step explanation:

(2/5)/4=(2/5)(1/4)=2/20=1/10

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Braiist can someome pls explain i dont know

Greeley [361]

Answer:

Step-by-step explanation:

Using the rule of exponents

$\frac{a^{m} }{a^{n} }$ = $a^{m-n}$

Consider the left side

$\frac{n^{x} }{n^{y} }$ = $n^{x-y}$ , then

$n^{x-y}$ = n²

Since bases on both sides are equal, equate the exponents

x - y = 2 → G

5 0

2 years ago

The price of a cycle is reduced by 25 per cent. The new price is reduced by a further 20 per cent.Find the single reduction the

Evgen [1.6K]

Answer:

40% . The single reduction together is 40%.

Step-by-step explanation:

Let the bicycle cost is x before reduced price.

First 25% is reduced and again 20% further reduced.

Let the single reduction is y% if the two reduction together are equal.

Solution,

Case .1

reduction cost $=x\times 25%$ %

$=x\times 25/100$

$=x/4$

The cost of bicycle after reduction of 25% is

$=x-x/4=3x/4$

cost of reduction further reduction of 20% $=3x/4\times 20$ %

$=3x\times 20/(4\times 100)$

$=3x/20$

The new cost of bicycle is further reduction of 20% is

$=3x/4-3x/20$

$=\left ( 15x-3x \right )/20$

$=12x/20=3x/5$

Case.2

if single reduction is done new cost of cycle is equal

$x-x\times y$ %= $3x/5$

$x\left ( 1-y/100 \right )=3x/5$

$\left ( 100-y \right )/100=3/5$

$100-y=60$

$y=40$ %

single reduction of a cycle is 40%

8 0

3 years ago

Can someone please help me with number 3

gladu [14]

Answer:

...

Step-by-step explanation:

the central angle is the same as the arc

mDE= 104°

mFE= 76°

mDEF= 180°

mCFD= 180°

mDFE= 256°

5 0

3 years ago

6th grade math help me plz

-Dominant- [34]

Answer

Good question!

A. false. Even though 5 is usually greater than 2, in this case it is less because it is negative and positives are always greater than negatives.

B. true. Just like the last question, positives are always greater than negatives and even though 8 is usually greater than 3, in this case the 3 is a negative so it is less.

C. true. Think about which number is closer to the number line. When we are talking about negative numbers, the number closer to the number line is greater.

D. false. Same concept as the last question where -12 is closer to the number line than -12.5 so -12 is actually greater.

If you have any additional questions feel free to ask me or your teacher so you can really master what you're learning. :)

4 0

3 years ago

Read 2 more answers

Three-fifths of the spanish club is girls. there are a total of 30 girls in the spanish club

crimeas [40]

Answer: whats the question here if you wanna know how many boys there are there should be 12

Step-by-step explanation:

7 0

3 years ago