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chubhunter [2.5K]
3 years ago
9

A car speeds up from 8.50 m/s to

Mathematics
1 answer:
Ann [662]3 years ago
4 0
First we need to subtract 8.50 from 22.2 we get 13.7. Then once we divide 13.7 by 3.84 we get 3.57. Which should be the answer.
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X3+2x2+7 by x+3 which synthetic division expression would give the correct result
IRISSAK [1]

Answer:

x^2-x+3 (r -2)

Step-by-step explanation:

x^3+2x^2+7 / x+3

-3 | 1 2 0 7

       -3 3 -9

_________

     1 -1 3 -2

This means x^2-x+3 with a remainder of -2

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Algebra 1 unit 4 test
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For what value of x is the rational expression below equal to zero x-4/(x+5)(x-1)
Tanzania [10]
We have that

<span>(x-4)/(x+5)(x-1)
</span> the rational expression is equal to zero <span>whenever its numerator is zero
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3 years ago
How do you do equations and equalities on a number line
castortr0y [4]
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8 0
3 years ago
Theresa Morgan a chemist has a 10% hydrochloric acid solution and a 65% hydrochloric acid solution. How many liters of each shou
prisoha [69]

<u>ANSWER: </u>

170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution to obtain 1870 liters of 60% solution.

<u>SOLUTION: </u>

First, set up a table. Fill in the unknowns with variables x and y. The table is attached below

From this, we can easily set up the two equations.  

Sum of values of two acids = Value of mixture  

0.1x + 0.65y = 1122  

For convenience, we'll multiply the entire equation by 100,

10x + 65y = 112200   ------ (1)  

Now, Sum of amounts of each acid = Amount of mixture  

x + y = 1870  ---------(2)

multiply (2) with 10 for easy calculation and derive the equation into one variable.

10x + 10y = 18700  

Subtracting equation (2) from (1),  

( + ) 10x + 65y = 112200

( − ) 10x + 10y = 18700

we get the solution as,

0 + 55y = 93500

Thus, 55y = 93500

y = 1700

Substituting y = 1700 in (2),

x + 1700 = 1870  

x  = 1870 - 1700  

x  = 170  

So, we have x = 170 and y = 1700

We can conclude that 170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution  to obtain 1870 liters of 60% solution.

4 0
3 years ago
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