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kherson [118]
3 years ago
15

Help please. r/5 - 6 = -1 A) r = 1 B) r = 5 C) r = 10 D) r = 25

Mathematics
1 answer:
statuscvo [17]3 years ago
5 0
Hello :),

\frac{r}{5}-6=-1 \\    \\ \frac{r}{5} =-1+6=5 \\  \\  r=5*5=25.
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Mr. Jones bought a cloth of length 3890 cm. How much is the length in m and cm?
devlian [24]

Answer:

38m and 90cm

1m = 100cm

3890cm = 38m and 90cm

Step-by-step explanation:

1m = 100cm

3890cm = 38m and 90cm

3 0
2 years ago
Read 2 more answers
There are 32 students in a class. Of the class, 3/8 of the students bring their own lunches. How many students bring their lunch
OverLord2011 [107]

Answer:

The number of students that bring their lunches is 12        

Step-by-step explanation:

Let

x -----> the number of students that bring their lunches

y -----> the total number of students in a class

we know that

The number of students that bring their lunches divided by  the total number of students in a class must be equal to 3/8

\frac{x}{y}=\frac{3}{8}

x=\frac{3}{8}y  -----> equation A

y=32 -----> equation B

substitute the value of y in equation A and solve for x

x=\frac{3}{8}(32)

x=12

therefore

The number of students that bring their lunches is 12

6 0
3 years ago
The product of 16 and 4 less than a number is 208. Find the number.
svlad2 [7]
This is a word problem signifying an algebraic expression.

Translating this to mathematics:

16x - 4 = 208

add 4 to both sides.

16x = 212 

divide 16 to both sides. 

x = \frac{212}{16} 

this is:

x = 13.25 




5 0
2 years ago
Which value is equivalent to 3 x 12 / ( 4 + 2)<br><br>A 6<br><br>B 11<br><br>C 12<br><br>D 15​
konstantin123 [22]
3x12/(4+2)

36 divided by 6 = 6

Your answer is A 6

8 0
2 years ago
What is the Scale Factor? (I need an actual answer this time so I can move on from my assignment I'm working on)​
steposvetlana [31]

Answer:

not sure which is the origional-

if the big one is the origiinal, then 1/2

if the small one is the origional- then 2-1

8 0
2 years ago
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