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dybincka [34]
3 years ago
12

Solve the equation by completing the square

Mathematics
2 answers:
photoshop1234 [79]3 years ago
6 0

Answer:

r=18, -4

Step-by-step explanation:

NeTakaya3 years ago
4 0

Answer:

r=18 or r= -4

Step-by-step explanation:

Please see attached picture for full solution.

Before completing the square, ensure that the coefficient of r^2 is 1 and bring all the terms to the left hand side. In this case, we do not have to do this as it is already done.

Since the sign before '14r' is a negative sign, use the formula as shown in the first picture.

We know that the value of 'b' in the formula is 7 because 2(r)(b)= 14r. Hence,

2b= 14

b= 7

Step 5: remember to add '±' whenever you introduce a square root.

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Item 29<br> Divide.<br> 6.8÷4<br> 6.8÷4
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Answer:

1.7

Step-by-step explanation:

You can just use a calculator to make the work easier.

7 0
2 years ago
what is the volume of a rectangular prism with a length of 10 inches, width of 12 inches and height of 6 inches
alexdok [17]
The answer would be 720 because you times all sides length times width times height 
7 0
3 years ago
Suppose a man offered to work for 30 days at the following salary: one cent for the first day two cents for the second day four
MatroZZZ [7]
It would be to little because it would only be 30 cents
6 0
3 years ago
Rick bought 3 shirts for $18.75 each, 2 pair of socks for $3.99 a pair, and a pair of slacks for $45.00. The
SIZIF [17.4K]

Answer:

3 shirt=3×$18.75

=56.25

2 pair shocks =3.99×2

=8

1 pair slacks=45.00

total=109.25

tax=6.75% then;

109.25+6.25%×109.25

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5 0
3 years ago
A recipe for chicken soup calls for 4 cups of water fir 9 servings. How many servings can be made with 12 pints of water?
Vlad [161]
First lets convert the pints to cups. 

1 pint = 2 cups 
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Now lets multiply to find out how many cups are in 12 pints. 

12 × 2 = 24 
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Now lets look at the information we have.

4 cups of water per 9 servings

Now lets divide to see how many time 24 goes into 4.

24 ÷ 4 = 6

Now lets multiply:-

6 × 9 = 54

So, 54 servings of water fir in 12 pints of water.

Hope I helped ya!!!
7 0
3 years ago
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