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Romashka-Z-Leto [24]
2 years ago
14

12 less than 7 times a number x

Mathematics
1 answer:
elena-s [515]2 years ago
6 0

7x \:  - 12  \\ this \: is \: the \: equation

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How would you represent this 5% raise?
muminat

Answer:

Convert the percentage to a fraction by placing the expression over 100. Percentage means 'out of 100'.

5/100 Cancel the common factor of 5 and 100.  1/20

Convert the fraction to a decimal by dividing the numerator by the denominator. 0.05 => 0.05 raise

Step-by-step explanation:

7 0
3 years ago
a cone and a sphere have the same volume. the height of the cone is 96 units. what would be the values for the radius of the con
jolli1 [7]

The volume V_c of a cone  with base radius r_c and height h_c is

V_c = \dfrac{1}{3}\pi r_c^2 h_c

Similarly, the volume V_s of a sphere with radius r_s is

V_s = \dfrac{4}{3}\pi r_s^3

We know that V_c=V_s and that h_c=96

So, we can set up the following equation:

\dfrac{96}{3}\pi r_c^2=\dfrac{4}{3}\pi r_s^3

We can simplify the common denominator 3, and pi appearing on both sides:

96r_c^2=4r_s^3

We can divide both sides by 4:

24r_c^2=r_s^3

Without further information, this is all we can say: the cubed radius of the sphere is the same as 24 times the squared radius of the cone.

3 0
4 years ago
CAN SOMEONE PLEASE HELP ME??
Brrunno [24]
The answer would be the third one, all you are doing is substituting a value of 1 when you see an x in the function

3 0
3 years ago
The number of kilograms, y, of a radioactive element that remains after t hours can be modeled by the equation y = 0.23 ( 0.91 )
Misha Larkins [42]

Answer:

A. 9% per hour

Step-by-step explanation:

we know that

The equation of a exponential decay function is given by

y=a(1-r)^t

where

a is the initial value

r is the rate of decrease

we have

a=0.23\ kg\\1-r=0.91\\r=1-0.91\\r=0.09

Convert to percentage

Multiply by 100

r=0.09(100)=9\%

6 0
4 years ago
How to decompose fractions to partial fractions
Alekssandra [29.7K]
The most basic way to decompose a fraction is to break it into unit fractions which is when the numerator (the top number) is 1. 5/8 is the same as the unit fraction 1/8 five times
6 0
3 years ago
Read 2 more answers
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