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3 years ago

12 less than 7 times a number x

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

8 0

The answer is 5x because when you do the math 12 subtracted by 7 equals 5 then you add the x at the end.

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The length, width, and height of a right rectangular prism are multiplied by 2/3. What will be the effect on the volume of the p

miskamm [114]

V initial = l*w*h;
V final = (2/3)l*(2/3)w*(2/3)h = (l*w*h)*(8/9) = V initial * (8/9) ;

6 0

3 years ago

Austin has two Marvel posters he wants to hang on the wall in his bedroom. The wall is 16.5 feet wide and each poster is 5 3/4 f

vekshin1

The expression for the distance is w=5/3 ft

Step-by-step explanation:

The wall has a width of 16.5 feet

A single poster has a width of 5 3/4 ft which is equal to 23/4 ft or 5.75 ft

For the two posters, the width occupied is ; 23/4 * 2 = 23/2 = 11.5 ft

Remaining width that will be unoccupied by the posters will be 16.5-11.5=5

A sketch of the wall with the two posters such that the edge of the wall is the same as the distance between the posters will show three un-covered spaces, from edge of wall to the first poster, then between the two posters, and lastly from the second poster to the other edge of the wall.

The un-covered 3 portions have an equal width, lets assume that they have a width of w ft

This means 3w will represent the uncovered width which equals to the unoccupied space of 5 ft

Form equation for the uncovered width as;

3w=5ft

w=5/3 ft ---------the distance from the edge of each poster to the nearest edge of wall.

Learn More

Perimeter of a wall : brainly.com/question/12692838

Keyword :posters, wall, edge, distance

#LearnwithBrainly

6 0

3 years ago

element x is a radioactive isotope such that every 32 years, its mass decreases by half. given that the initial mass of the samp

VashaNatasha [74]

Answer:

the answer is 31.9 years

Step-by-step explanation:

initial mass, $M_{0}$ = 150 gram

half life, $t_{half\hspace{0.1cm}life}$ = 32 years

new mass = half of initial mass = M = 0.5 $M_{0}$

formula , M = $M_{0}$ $e^{\frac{\ln\frac{1}{2}}{t_{half} }\times x }$ where x is the number of years required.

therefore 0.5 $M_{0}$ = $M_{0}$ $e^{\frac{\ln\frac{1}{2}}{t_{half} }\times x } = M_{0} e^{-0.0217x}$

therefore -0.0217 x = $\ln{0.5} = -0.693$

therefore x = $\frac{-0.693}{-0.0217}$ = 31.942

8 0

3 years ago

Lisa is collecting data by interviewing people on the streets. She

katen-ka-za [31]

Answer:35 you are welcome

Step-by-step explanation:

6 0

3 years ago

5+ 1/7b = -2<br>whats be and explanation<br>(don't get it cause its a fraction)

oee [108]

5+(1/7)b=-2

First subtract 5 from both sides. Our goal is to isolate b.
5+(1/7)b-5= -2-5
(1/7)b= -7

Now multiply both sides by 7 because (1/7)*7= 7/7 or 1.
7* (1/7)b= -7*7
1b= -49

Final answer: b= -49

8 0

3 years ago