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jok3333 [9.3K]
3 years ago
8

Complete the rate table for spaghetti ingredients

Mathematics
1 answer:
ddd [48]3 years ago
6 0
Sorry, nothing is attached?
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It takes Ms. Campbell 5 times as long as it takes Ms. Dorsey to paint a room. If Ms. Dorsey
Aliun [14]

Answer:

Dorsey = 4.8 hours

Campbell = 24 hours

Step-by-step explanation:

It takes "x" hours for Dorsey

So, it will take 5 times more for Campbell, so

It takes "5x" hours for Campbell

Rate is inverse of time, so rates are:

Dorsey: 1/x

Campbell: 1/5x

We know Rate * Time = Work

When together, it takes 4 hours to finish a work, so we can write:

(\frac{1}{x}+\frac{1}{5x})4=1

Solving for x, we get the time of Dorsey:

(\frac{1}{x}+\frac{1}{5x})4=1\\(\frac{1}{x}+\frac{1}{5x})=\frac{1}{4}\\\frac{5+1}{5x}=\frac{1}{4}\\\frac{6}{5x}=\frac{1}{4}\\5x=24\\x=4.8

Dorsey takes 4.8 hours alone

Campbell takes 4.8 * 5 = 24 hours alone

7 0
3 years ago
If the perimeter of a square is 20, what is the length of the diagonal ?
Rina8888 [55]

Answer:

Step-by-step explanation:

if you know that the perimeter is 20,

then you have to divide by 4 to get the length of one side

20/4=5.

Draw the diagonal and write in it's length as x.

Use Pythagorean formula

Then know that a2+b2=c2

and use the two side lengths as a and b.

This gives you the equation

5^2+5^2=x^2.

Do the calculations and solve the equation.

25+25=x^2

50=x^2

√50=x.

Therefore x=√50 where x equals the length of the diagonal.

7 0
3 years ago
N=r (A-s) what is s
Lerok [7]

r(A-s)=N\ \ \ \ |\text{use distributive property}\\\\rA-rs=N\ \ \ \ |-rA\\\\-rs=-rA+N\ \ \ \ |:(-r)\neq0\\\\\boxed{s=\dfrac{rA-N}{r}}

4 0
3 years ago
F(x)= sin(arctanx). find the range of f.
Scrat [10]
Answer is in the attachment below.

-1<f(x)<1

5 0
3 years ago
Which of the following factors gives a product ofײ+5+4?
Sauron [17]
X square + 1x + 4x + 4
X(x+1)+4(x+1)
(X+1)(x+4)
7 0
3 years ago
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