All categories

3 years ago

The price of a notebook was $3.70 yesterday. Today, the price fell to $3.20. Find the percent decrease

Mathematics

1 answer:

jeyben [28]3 years ago

6 0

Answer:

86% Decrease

Step-by-step explanation:

3.70 times x= 3.20 3.20 divided by 3.70= 0.86

You might be interested in

What is -20.3-14.34?

djyliett [7]

Answer:

-34.64

Step-by-step explanation:

-20.3-14.34

-34.64

8 0

3 years ago

Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing t

eimsori [14]

The correct answer is:

C) x/21

Explanation:

Since Person 1 can complete the entire job (100% = 1/1 = 1) in 21 minutes, this person can complete 1/21 of the job per minute. This is Person 1's rate. If x is the amount of time it takes both people together to finish the job, then the amount of work Person 1 does would be (1/21)(x) = x/21.

7 0

3 years ago

In one version of trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another version of trail mix, there ar

vagabundo [1.1K]

Answer:

Step-by-step explanation:

The 4.5 cups of peanuts should be 4

3 0

3 years ago

Write 37/100 as a percentage.

insens350 [35]

Answer:

37%

Step-by-step explanation:

37% equal 37 of a whole 100 is a whole

7 0

3 years ago

Read 2 more answers

Consider the expression. (StartFraction 2 m Superscript negative 1 baseline n Superscript 5 Baseline Over 3 m Superscript 0 Base

suter [353]

Answer:

The correct option is option (3) 4 ÷ 25.

Step-by-step explanation:

The expression in terms of m and n is:

$F(m,n)=[\frac{2m^{-1}n^{5}}{3m^{0}n^{4}}]^{2}$

Exponent rule of division:

$a^{x}\div a^{y}=a^{x-y}$

Compute the value of the expression for m = -5 and n = 3 as follows:

$F(m,n)=[\frac{2m^{-1}n^{5}}{3m^{0}n^{4}}]^{2}$

$F(-5,3)=[\frac{2\csdot (-5)^{-1}\cdot (3)^{5}}{3\cdot (-5)^{0}\cdot (3)^{4}}]^{2}$

$=\{\frac{2}{3}\times [(-5)^{-1-0}\times (3)^{5-4}}]\}^{2}\\\\=\{\frac{2}{3}\times \frac{-1}{5}\times 3\}^{2}\\\\=\{-\frac{2}{5}\}^{2}\\\\=\frac{4}{25}$

Thus, the correct option is option (3) 4 ÷ 25.

8 0

3 years ago

Read 2 more answers