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Kitty [74]
2 years ago
10

What property justifies step? 5(x-3)=20 x-3=4

Mathematics
2 answers:
prohojiy [21]2 years ago
7 0
The property of division.
Both sides are divided by 5.
“The division property of equality states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal.”
Ymorist [56]2 years ago
7 0

Answer:

5X-15=20

5x=35

x=7

Step-by-step explanation:

5x-15=20

5x=35

=7

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A bike rental service charges a $23.50 initial flat rate and then an additional $5.40 per hour. Write an equation in the slope-i
dezoksy [38]

Answer:

y = 5.4x + 23.5

Step-by-step explanation:

Since the service charges $23.50 for every hour, you have to multiply x by 23.5 like this: 23.5

There is a flat fee of $23.50, so you have to add 23.5 on top of that like this: 5.4x + 23.5

All of this has to add up to y; 5.4x + 23.5 = y

5 0
2 years ago
What is the surface area of this right triangular prism ? round your answer to the nearest tenth.​
velikii [3]

Answer:

78 m^2 Unless I got some of the measurements wrong, kinda hard to see them.

Step-by-step explanation:

The surface area will be the sum of the area of each face.  so lets see, there is the base (in this orientation) which is a 8x3 rectangle it looks like.

then two trianglular sides with both having a base of 8 and height of 3

then two "roof" pieceswhich are rectangles again, one side of 3 and the other 5.

Now we add each face up.

rectangular base = 3x8 = 24

2 triangular sides = 2(.5*8*3) = 24

2 rectangular roof pieces = 2(5*3) = 30

Now add it all up

24+24+30 = 78

5 0
3 years ago
Read 2 more answers
What is the approximate circumference of a circle with a radius of 30 inches? Use π ≈ 3.14.
stich3 [128]
Given:
radius = 30 inches

Circumference of a circle = 2 * π * r
C = 2 * 3.14 * 30 inches
C = 188.40 inches

Answer is Choice B. 188.4 inches.
3 0
3 years ago
Read 2 more answers
A bag contains 8 red marbles, 4 white marbles, and 5 blue marbles. You draw one marble at random. Find Pared and blue) (1 point)
stiks02 [169]

Answer:

5/(8+4+5) = 5/17

Step-by-step explanation:

total has (8 red +4 white+5 blue)= 17

we looking for blue , so is 5.

5/17

4 0
1 year ago
8 <br> 7<br> /<br> 8<br> + <br> 9 <br> 13<br> /<br> 16<br> what is this in a mixed number.
FinnZ [79.3K]

Answer:

18 and 11/16

Step-by-step explanation:

I converted the two numbers into improper fractions which leaves me with

71/8+157/16

I thenn made sure I had common denominators, which means I need to multiply the first number by 2/2 and I'm left with:

142/16+157/16

I can now add the 2 numbers together and I get:

299/16

now we just need to convert the number into a mixed number by dividing, and I am left with:

18 and 11/16

5 0
2 years ago
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