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Pavel [41]
3 years ago
12

The washer and dryer cost $1000 combined. The cost of the washer is three times the cost of the dryer. What is the cost of the d

ryer?
Mathematics
2 answers:
Anika [276]3 years ago
5 0
[tex] W + D = 1000 \\
W = 3*D [tex]
Plug the second equation into the first;
[tex] W+D=1000 \\
(3*D)+D=1000\\
4D=1000 [tex]

D = $250
creativ13 [48]3 years ago
3 0
Let the cost of the dryer be x.

Since the washer is 3* the cost of dryer = 3*x = 3x

The total cost = $1000

x + 3x = 1000

4x = 1000

x = 1000/4

x = 250

Since the cost of the dryer be x ,   x = 250

Cost of dryer = $250.

Hope this explains it.
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The area of a rectangular field is 2275 m2. The field is enclosed by 200 m of fence. What are the dimensions of the field?
AURORKA [14]
So it is enclosed by 200 m of  fence
perimiter=200 m
it is a rectangle to
p=legnth+legnth+width+width or
p=l+l+w+w or
p=2l+2w or
p=2(l+w)
so
p=200
200=2(l+w)
divide both sides by 2
100=l+w
area=l times w
area=2275
lw=2275
l+w=100
combine and solve
l+w=100
subtract w
l=100-w
subisutute 100-w for l in other eqution
(100-w)(w)=2275
distribute
-w^2+100w=2275
add (w^2-100w) to both sides
0=w^2-100w+2275
factor
find what 2 numbers add up to -100 and multiply to get 2275
guess (or factor 2275 and find factors that add up to -100)
figure out that they are -65 and -35
0=(w-65)(w-35)
set each to zero
0=w-65
0=w-35

solve for w
w=65 or 35
65>35 so
65 m=legnth
35 m=width
 
4 0
3 years ago
Solve 5x ≥ 25. Graph the solution.
Zina [86]

Answer:

Step-by-step explanation:

Alright so we are going to solve

5x ≥ 25  Divide both sides by 5

x≥5

4 0
3 years ago
What is 3/5 divided by 1/2 using the keep change flip method
goblinko [34]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
How do you divide (n^2-n-29)/(n-6) ??
Orlov [11]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

Polynomial long division is done the way any long division is done. Find a "partial quotient", subtract from the dividend the product of that partial quotient and the divisor. The result is a new dividend. Repeat until the degree of the dividend is less than that of the divisor.

__

In the attached, the "Hints" show you how the partial quotient is found, and they show you how the product of the partial quotient and divisor is found.

The partial quotient term is simply the ratio of the highest degree terms of dividend and divisor. (Unlike numerical long division, there is no guessing.)

__

The remainder is the dividend of lower degree than the divisor. As in numerical long division, the full quotient expresses the remainder over the divisor.

For example, 5 ÷ 3 = 1 r 2 = 1 + 2/3.

Your full quotient is (n+5) +1/(n-6).

5 0
2 years ago
What is the value of x?<br> A. 6<br> B. 5<br> c. 4<br> D.3
Mumz [18]

Answer:

D

Step-by-step explanation:

CD is an angle bisector and divides the opposite side into segments which are proportional to the other 2 sides, that is

\frac{BC}{AC} = \frac{BD}{AD} , substitute values

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3x = 9 ( divide both sides by 3 )

x = 3 → D

8 0
3 years ago
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