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ivann1987 [24]
2 years ago
7

Plz help me I am timed : (

Mathematics
2 answers:
enot [183]2 years ago
8 0
I think that it is 60
-BARSIC- [3]2 years ago
5 0
The answer to this question is 260
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Solve for x.
Masteriza [31]

Answer:

x = 2.5 or -0.8

Step-by-step explanation:

Here, we are to use completing the square method to solve for the values of x

Firstly, we divide through by 4

= x^2 -7/4x -2 = 0

Now, we move the two term to the right hand side

x^2 -7/4x = 2

Now, we divide the coefficient of x by 2 and square it;

That would be;

(-7/4 * 1/2)^2 = 49/64

we now add this value to both sides of the equation

x^2 -7/4x + 49/64 = 2 + 49/64

The right hand side can be rewritten as;

(x-7/8)^2 = 177/64

taking the square root of both sides

x-7/8 = √(177/64)

x = 7/8 ± √(177/64)

x = 7/8 + √(177/74) or 7/8 - √(177/64)

= x = 2.53802 or -0.788017

Which to the nearest tenth is

x = 2.5 or -0.8

7 0
3 years ago
The ratio of nonfiction books to fiction books in a library is 105 to 189. Which statement describes this relationship?
kolezko [41]

Answer: A)There are 5 nonfiction books for every 9 fiction books in the library.  

Step-by-step explanation: If you do the math you realize that there are clearly less nonfiction books than fiction books.

105/5=21 and after 21*9 lines up and to check your work than

5*21=105 and 9*21=189 it is not B because the smaller number 105 is in front of the ratio 105:189 and 5:9

7 0
3 years ago
Read 2 more answers
What is equivalent to 3.6?
kotegsom [21]
.6/1.0 = 6/10
3 6/10 or 3 3/5

8 0
3 years ago
Luther evaluated 2^3 as 9 and wade evaluated 3^2 as 9 are both students correct?
MatroZZZ [7]

Answer:

Step-by-step explanation:

Luther is incorrect.  2 x 2= 4 x 2 = 8 (not 9)

                                 1     2         3

6 0
3 years ago
Read 2 more answers
16. Calculate the following logarithms.<br> a. log5(25)
stellarik [79]

Answer:

The answer to your question is: 2

Step-by-step explanation:

Logarithms is a number to which a base must be powered to give another number.

In this example, 5 is the base and must be powered to give 25.

Then, to obtain 25, the power must be 2 because 5² = 25.

6 0
2 years ago
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