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NemiM [27]
3 years ago
5

Write an algebraic expression for "21 less than a number divided by 4 ."

Mathematics
2 answers:
tino4ka555 [31]3 years ago
8 0
X/4 - 21

is your answer

hope this helps
Anna35 [415]3 years ago
4 0
(x-21)/4
x is the number subtract 21 and divide by 4
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Add a restaurant after every 12 visit you receive a free beverage after every 15 where is it you receive a free dessert which vi
elena55 [62]
You will receive a free beverage and free desert on your 60th visit.

Beverage- 1, 2, 3, 4, 5, 6
Visits- 12, 24, 36 ,48 ,60


Desert- 1, 2, 3 ,4
Visits- 15, 30, 45, 60

Notice how for beverages at 60 visits you get your 6th drink for free, and for deserts, at you 60 visits you receive your 4 free desert.

So, since both numbers have the same number (60) of visits which is their common multiple between the 2, you answer is 60.
8 0
4 years ago
Read 2 more answers
Y=-1/4x+6 when y equals 4
timofeeve [1]

Answer:

Step-by-step explanation:

Y = -1/4x+6, when y= 4

Same as saying

4 = -1/4x+6 , where y = 4

Multiply both sides by (4x+6)

4(4x+6) = -1

Opening the parentheses

16x + 24 = -4

16x = -4-24

16x = -28

Divide both sides by 16

X = -28/16

X = - 7/4

Ans = -7/4

8 0
3 years ago
Find the slope of the line (-3,-2) and (3, 4)
andrey2020 [161]
The slope is given by rise over run, or difference in y over difference in x. Therefore in this problem that is (-2-4)/(-3-3) => (-6)/(-6) => 1
Final answer:
The slope is 1.
Hope I could help :)
3 0
3 years ago
Read 2 more answers
Find the value of x and y <br>&lt;1=(10x) <br>&lt;2=(10y+20)<br>&lt;3 =100 ​
Rufina [12.5K]

Answer:

  1. 100
  2. 80
  3. 100
  4. 80

x = 10

y = 6

Step-by-step explanation:

We can use the vertical angle theorem to solve for most of this problem. We know that 1/3 will have the same measure and so will 4/2. We can create an equation to solve for 1 and 3.

10x = 100

x = 10

We aren't given angle 4 so we are going to have to solve that ourselves. We can create an equation knowing that 4 and 3 will create a supplementary angle.

100 + z = 180

z = 80

Now, that we have angle 4, we know that angle 2 will have the same measure because they are vertical angles. Now to find the value of y, we can take the angle measure and solve for it.

10y + 20 = 80

10y = 60

y = 6

Best of Luck!

3 0
3 years ago
A farmer wants to fence in a rectangular plot of land adjacent to the north wall of his barn. no fencing is needed along the bar
jeyben [28]

Hi,

Let assume a the west side,

b the length of the north wall (i suppose the answer is smaller then the barn.

Cost of the fence= a*6+a*12+b*12=3000 $.

So 3a+2b=500==>b=(500-3a)/2

Area =a*b=a(500-3a)/2= 250a-3/2a²

Derivate the area ==> 250-3a=0

==> a=250/3 and b=(500-3*250/3)/2=125

Width=125 (feet)

Length=250/3=83.333 (feet)

3 0
3 years ago
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