All categories

3 years ago

A number minus 8 and then subtracted by 12 is equal to 5 what is the number

Mathematics

1 answer:

san4es73 [151]3 years ago

7 0

Answer:25

Step-by-step explanation: first you do 5+12 which gets you 17. Then you add 17+8 and you get 25. 25 -8=17 17-12=5

You might be interested in

The following data give the prices of seven textbooks randomly selected from a university bookstore.

swat32

Answer:

a) Mean = $121

Sum of deviations = $0

b) Standard deviation = 41.19

Variance = 1696.67

Range = $120

Step-by-step explanation:

We are given the following data:

$91 , $176 , $108 , $115 , $56 , $157 , $144

a) Mean and sum of deviations

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{847}{7} = 121$

Sum of deviations =

-30 + 55 - 13 - 6 - 65 + 36 + 23 = 0

The sum of deviations is zero dollars.

b) range, variance, and standard deviation

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

Sum of square of differences =

900 + 3025 + 169 + 36 + 4225 + 1296 + 529 = 10180

$\sigma = \sqrt{\dfrac{10180}{6}} = 41.19\\\\\sigma^2 = 1696.67$

Sorted data: 56, 91, 108, 115, 144, 157, 176

Range = Maximum - Minimum

Range = 176 - 56 = 120

5 0

3 years ago

CAN YALL HELP PLZZzz

yulyashka [42]

The answer would be the third one .
Perpendicular would always be the opposite of your original slope.
Hope this helps! (:

6 0

3 years ago

Read 2 more answers

In a recent year, 27.4% of all registered doctors were female. If there were 44,700 female registered doctors that year, what wa

Sophie [7]

Answer:

1,224,780

Step-by-step explanation:

44,700 × 27.4= 1,224,780

7 0

3 years ago

Which equation represents the following word problem? Grace is making a cake. The recipe calls for 21/2 cups of flour. If she ha

Fudgin [204]

Answer: c

Step-by-step explanation:

3/4x = 21/2

3 0

3 years ago

It would be amazing if u helped me with the question below, thx! <3

tekilochka [14]

namely, how many times does 4 x 10⁻³ go into 8 x 10⁶.

$\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\a^{-n} \implies \cfrac{1}{a^n}\qquad \qquad\cfrac{1}{a^n}\implies a^{-n}\qquad \qquad a^n\implies \cfrac{1}{a^{-n}}\\\\-------------------------------\\\\\cfrac{\stackrel{elephant}{8\times 10^6}}{\stackrel{ant}{4\times 10^{-3}}}\implies \cfrac{8}{4}\times \cfrac{10^6}{10^{-3}}\implies 2\times 10^6\cdot 10^3\\\\\\2\times 10^{6+3}\implies 2.0\times 10^9$

7 0

3 years ago